Liu, Genqian Spectral invariants of the perturbed polyharmonic Steklov problem. (English) Zbl 07523706 Calc. Var. Partial Differ. Equ. 61, No. 4, Paper No. 125, 19 p. (2022). MSC: 35P20 35C20 35J58 35R01 35R30 58J35 58J50 PDF BibTeX XML Cite \textit{G. Liu}, Calc. Var. Partial Differ. Equ. 61, No. 4, Paper No. 125, 19 p. (2022; Zbl 07523706) Full Text: DOI OpenURL
De Regibus, Fabio; Grossi, Massimo On the number of critical points of the second eigenfunction of the Laplacian in convex planar domains. (English) Zbl 07510684 J. Funct. Anal. 283, No. 1, Article ID 109496, 22 p. (2022). MSC: 35P05 35J25 55M25 PDF BibTeX XML Cite \textit{F. De Regibus} and \textit{M. Grossi}, J. Funct. Anal. 283, No. 1, Article ID 109496, 22 p. (2022; Zbl 07510684) Full Text: DOI OpenURL
Liu, Genqian The geometric invariants for the spectrum of the Stokes operator. (English) Zbl 07503476 Math. Ann. 382, No. 3-4, 1985-2032 (2022). MSC: 76D07 35Q30 35P20 PDF BibTeX XML Cite \textit{G. Liu}, Math. Ann. 382, No. 3--4, 1985--2032 (2022; Zbl 07503476) Full Text: DOI OpenURL
di Blasio, Giuseppina; Gavitone, Nunzia Two inequalities for the first Robin eigenvalue of the Finsler Laplacian. (English) Zbl 07489063 Arch. Math. 118, No. 2, 205-213 (2022). MSC: 35P15 35B40 35J25 PDF BibTeX XML Cite \textit{G. di Blasio} and \textit{N. Gavitone}, Arch. Math. 118, No. 2, 205--213 (2022; Zbl 07489063) Full Text: DOI arXiv OpenURL
Ghomi, Mohammad; Spruck, Joel Total curvature and the isoperimetric inequality in Cartan-Hadamard manifolds. (English) Zbl 07471797 J. Geom. Anal. 32, No. 2, Paper No. 50, 54 p. (2022). MSC: 53C20 58J05 52A38 49Q15 PDF BibTeX XML Cite \textit{M. Ghomi} and \textit{J. Spruck}, J. Geom. Anal. 32, No. 2, Paper No. 50, 54 p. (2022; Zbl 07471797) Full Text: DOI arXiv OpenURL
Chorwadwala, Anisa M. H.; Ghosh, Mrityunjoy Optimal shapes for the first Dirichlet eigenvalue of the \(p\)-Laplacian and dihedral symmetry. (English) Zbl 1481.35236 J. Math. Anal. Appl. 508, No. 2, Article ID 125901, 18 p. (2022). MSC: 35J92 35P30 PDF BibTeX XML Cite \textit{A. M. H. Chorwadwala} and \textit{M. Ghosh}, J. Math. Anal. Appl. 508, No. 2, Article ID 125901, 18 p. (2022; Zbl 1481.35236) Full Text: DOI arXiv OpenURL
Grossi, Massimo On the number of critical points of solutions of semilinear elliptic equations. (English) Zbl 1480.35112 Electron Res. Arch. 29, No. 6, 4215-4228 (2021). MSC: 35J05 35J91 35J25 PDF BibTeX XML Cite \textit{M. Grossi}, Electron Res. Arch. 29, No. 6, 4215--4228 (2021; Zbl 1480.35112) Full Text: DOI OpenURL
Bérard, Pierre; Helffer, Bernard Level sets of certain Neumann eigenfunctions under deformation of Lipschitz domains application to the extended Courant property. (English. French summary) Zbl 1479.35581 Ann. Fac. Sci. Toulouse, Math. (6) 30, No. 3, 429-462 (2021). MSC: 35P05 35J25 58J50 PDF BibTeX XML Cite \textit{P. Bérard} and \textit{B. Helffer}, Ann. Fac. Sci. Toulouse, Math. (6) 30, No. 3, 429--462 (2021; Zbl 1479.35581) Full Text: DOI arXiv OpenURL
Dahne, Joel; Gómez-Serrano, Javier; Hou, Kimberly A counterexample to Payne’s nodal line conjecture with few holes. (English) Zbl 1478.35154 Commun. Nonlinear Sci. Numer. Simul. 103, Article ID 105957, 13 p. (2021). MSC: 35P05 35B05 35J25 PDF BibTeX XML Cite \textit{J. Dahne} et al., Commun. Nonlinear Sci. Numer. Simul. 103, Article ID 105957, 13 p. (2021; Zbl 1478.35154) Full Text: DOI arXiv OpenURL
Hoskins, Jeremy G.; Steinerberger, Stefan Towards optimal gradient bounds for the torsion function in the plane. (English) Zbl 1477.35046 J. Geom. Anal. 31, No. 8, 7812-7841 (2021). MSC: 35B45 28A75 31A05 31B05 35B50 35J25 60J65 60J70 74B05 PDF BibTeX XML Cite \textit{J. G. Hoskins} and \textit{S. Steinerberger}, J. Geom. Anal. 31, No. 8, 7812--7841 (2021; Zbl 1477.35046) Full Text: DOI arXiv OpenURL
Beck, Thomas; Canzani, Yaiza; Marzuola, Jeremy L. Nodal line estimates for the second Dirichlet eigenfunction. (English) Zbl 1473.35118 J. Spectr. Theory 11, No. 1, 323-353 (2021). Reviewer: Marius Ghergu (Dublin) MSC: 35J05 35P05 PDF BibTeX XML Cite \textit{T. Beck} et al., J. Spectr. Theory 11, No. 1, 323--353 (2021; Zbl 1473.35118) Full Text: DOI arXiv OpenURL
Haddad, J.; Jiménez, C. H.; Montenegro, M. From affine Poincaré inequalities to affine spectral inequalities. (English) Zbl 1467.35231 Adv. Math. 386, Article ID 107808, 35 p. (2021). MSC: 35P30 35A23 35B09 35J25 35J92 52A40 PDF BibTeX XML Cite \textit{J. Haddad} et al., Adv. Math. 386, Article ID 107808, 35 p. (2021; Zbl 1467.35231) Full Text: DOI arXiv OpenURL
Band, Ram; Egger, Sebastian K.; Taylor, Alexander J. The spectral position of Neumann domains on the torus. (English) Zbl 1462.58006 J. Geom. Anal. 31, No. 5, 4561-4585 (2021). MSC: 58C40 58J50 35P05 PDF BibTeX XML Cite \textit{R. Band} et al., J. Geom. Anal. 31, No. 5, 4561--4585 (2021; Zbl 1462.58006) Full Text: DOI arXiv OpenURL
Steinerberger, Stefan A spectral approach to the shortest path problem. (English) Zbl 1475.05058 Linear Algebra Appl. 620, 182-200 (2021). Reviewer: Kexiang Xu (Nanjing) MSC: 05C12 05C35 05C50 35J05 PDF BibTeX XML Cite \textit{S. Steinerberger}, Linear Algebra Appl. 620, 182--200 (2021; Zbl 1475.05058) Full Text: DOI arXiv OpenURL
Khan, Gabriel Hall’s conjecture on extremal sets for random triangles. (English) Zbl 1460.52009 J. Geom. Anal. 30, No. 4, 3413-3457 (2020). MSC: 52A22 60D05 PDF BibTeX XML Cite \textit{G. Khan}, J. Geom. Anal. 30, No. 4, 3413--3457 (2020; Zbl 1460.52009) Full Text: DOI arXiv OpenURL
Paoli, Gloria; Piscitelli, Gianpaolo; Trani, Leonardo Sharp estimates for the first \(p\)-Laplacian eigenvalue and for the \(p\)-torsional rigidity on convex sets with holes. (English) Zbl 1460.35179 ESAIM, Control Optim. Calc. Var. 26, Paper No. 111, 15 p. (2020). MSC: 35J92 35J25 35P15 PDF BibTeX XML Cite \textit{G. Paoli} et al., ESAIM, Control Optim. Calc. Var. 26, Paper No. 111, 15 p. (2020; Zbl 1460.35179) Full Text: DOI arXiv OpenURL
Alessandrini, Giovanni A small collection of open problems. (English) Zbl 1458.35090 Rend. Ist. Mat. Univ. Trieste 52, 591-600 (2020). MSC: 35B60 35J92 35A02 35J25 35K10 35R30 PDF BibTeX XML Cite \textit{G. Alessandrini}, Rend. Ist. Mat. Univ. Trieste 52, 591--600 (2020; Zbl 1458.35090) Full Text: DOI arXiv Link OpenURL
Kennedy, J. B. A family of diameter-based eigenvalue bounds for quantum graphs. (English) Zbl 1473.81070 Atay, Fatihcan M. (ed.) et al., Discrete and continuous models in the theory of networks. Selected contributions from the participants of the research group hosted by the ZiF – Center for Interdisciplinary Research, University of Bielefeld, Bielefeld, Germany, October 2012 – September 2017 and the final conference, University of Bielefeld, Bielefeld, Germany, November 27 – December 1, 2017. Cham: Springer. Oper. Theory: Adv. Appl. 281, 213-239 (2020). MSC: 81Q35 34B45 34L15 35P15 PDF BibTeX XML Cite \textit{J. B. Kennedy}, Oper. Theory: Adv. Appl. 281, 213--239 (2020; Zbl 1473.81070) Full Text: DOI arXiv OpenURL
Ilias, Saïd; Shouman, Abdolhakim Inequalities between Dirichlet, Neumann and buckling eigenvalues on Riemannian manifolds. (English) Zbl 1445.35264 Calc. Var. Partial Differ. Equ. 59, No. 4, Paper No. 127, 15 p. (2020). MSC: 35P15 35J25 47J10 58J50 58C40 PDF BibTeX XML Cite \textit{S. Ilias} and \textit{A. Shouman}, Calc. Var. Partial Differ. Equ. 59, No. 4, Paper No. 127, 15 p. (2020; Zbl 1445.35264) Full Text: DOI OpenURL
Anoop, T. V.; Ashok Kumar, K. On reverse Faber-Krahn inequalities. (English) Zbl 1437.35516 J. Math. Anal. Appl. 485, No. 1, Article ID 123766, 20 p. (2020). Reviewer: Vladimir Bobkov (Plzeň) MSC: 35P15 35P30 PDF BibTeX XML Cite \textit{T. V. Anoop} and \textit{K. Ashok Kumar}, J. Math. Anal. Appl. 485, No. 1, Article ID 123766, 20 p. (2020; Zbl 1437.35516) Full Text: DOI arXiv OpenURL
Bobkov, Vladimir; Kolonitskii, Sergey On a property of the nodal set of least energy sign-changing solutions for quasilinear elliptic equations. (English) Zbl 1429.35103 Proc. R. Soc. Edinb., Sect. A, Math. 149, No. 5, 1163-1173 (2019). MSC: 35J92 35J40 PDF BibTeX XML Cite \textit{V. Bobkov} and \textit{S. Kolonitskii}, Proc. R. Soc. Edinb., Sect. A, Math. 149, No. 5, 1163--1173 (2019; Zbl 1429.35103) Full Text: DOI arXiv OpenURL
Ouyang, Yingkai Computing spectral bounds of the Heisenberg ferromagnet from geometric considerations. (English) Zbl 1427.82055 J. Math. Phys. 60, No. 7, 071901, 18 p. (2019). Reviewer: Piotr Garbaczewski (Opole) MSC: 82D40 82-04 82C22 05A15 35P15 82C20 05C50 PDF BibTeX XML Cite \textit{Y. Ouyang}, J. Math. Phys. 60, No. 7, 071901, 18 p. (2019; Zbl 1427.82055) Full Text: DOI arXiv Link OpenURL
Cheng, Xiuyuan; Rachh, Manas; Steinerberger, Stefan On the diffusion geometry of graph Laplacians and applications. (English) Zbl 1412.35353 Appl. Comput. Harmon. Anal. 46, No. 3, 674-688 (2019). MSC: 35R02 35J05 94C15 PDF BibTeX XML Cite \textit{X. Cheng} et al., Appl. Comput. Harmon. Anal. 46, No. 3, 674--688 (2019; Zbl 1412.35353) Full Text: DOI arXiv OpenURL
Wen, Zhiyuan; Zhou, Lijuan Continuous minimizer of eigenvalues for eigenvalue problem with equimeasurable weights. (English) Zbl 07509529 Bound. Value Probl. 2018, Paper No. 73, 6 p. (2018). MSC: 34L15 34B24 34L40 47J30 46E35 PDF BibTeX XML Cite \textit{Z. Wen} and \textit{L. Zhou}, Bound. Value Probl. 2018, Paper No. 73, 6 p. (2018; Zbl 07509529) Full Text: DOI OpenURL
Kiwan, Rola On the nodal set of a second Dirichlet eigenfunction in a doubly connected domain. (English. French summary) Zbl 1426.35173 Ann. Fac. Sci. Toulouse, Math. (6) 27, No. 4, 863-873 (2018). Reviewer: Davide Buoso (Lausanne) MSC: 35P15 35P05 35J05 49R05 PDF BibTeX XML Cite \textit{R. Kiwan}, Ann. Fac. Sci. Toulouse, Math. (6) 27, No. 4, 863--873 (2018; Zbl 1426.35173) Full Text: DOI OpenURL
Salakhudinov, R. G. A note about torsional rigidity and Euclidean moment of inertia of plane domains. (English) Zbl 1401.35041 Lobachevskii J. Math. 39, No. 6, 826-834 (2018). MSC: 35J05 35J25 30C35 PDF BibTeX XML Cite \textit{R. G. Salakhudinov}, Lobachevskii J. Math. 39, No. 6, 826--834 (2018; Zbl 1401.35041) Full Text: DOI OpenURL
Kennedy, J. B. A toy Neumann analogue of the nodal line conjecture. (English) Zbl 1391.35291 Arch. Math. 110, No. 3, 261-271 (2018). Reviewer: Dumitru Motreanu (Juiz de Fora) MSC: 35P05 35B05 35J05 58J50 PDF BibTeX XML Cite \textit{J. B. Kennedy}, Arch. Math. 110, No. 3, 261--271 (2018; Zbl 1391.35291) Full Text: DOI arXiv OpenURL
Wen, ZhiYuan; Zhang, MeiRong Minimization of eigenvalues and construction of non-degenerate potentials for the one-dimensional \(p\)-Laplacian. (English) Zbl 1350.34066 Sci. China, Math. 59, No. 1, 49-66 (2016). Reviewer: Antonio Cañada Villar (Granada) MSC: 34L15 49R05 34B15 PDF BibTeX XML Cite \textit{Z. Wen} and \textit{M. Zhang}, Sci. China, Math. 59, No. 1, 49--66 (2016; Zbl 1350.34066) Full Text: DOI OpenURL
Anoop, T. V.; Drábek, P.; Sasi, Sarath On the structure of the second eigenfunctions of the \(p\)-Laplacian on a ball. (English) Zbl 1386.35288 Proc. Am. Math. Soc. 144, No. 6, 2503-2512 (2016). MSC: 35P15 35J92 35B06 35J25 35P30 49R05 PDF BibTeX XML Cite \textit{T. V. Anoop} et al., Proc. Am. Math. Soc. 144, No. 6, 2503--2512 (2016; Zbl 1386.35288) Full Text: DOI arXiv OpenURL
Girouard, A.; Laugesen, R. S.; Siudeja, B. A. Steklov eigenvalues and quasiconformal maps of simply connected planar domains. (English) Zbl 1333.35274 Arch. Ration. Mech. Anal. 219, No. 2, 903-936 (2016). MSC: 35Q74 74K15 30C62 74H45 35P15 35B45 PDF BibTeX XML Cite \textit{A. Girouard} et al., Arch. Ration. Mech. Anal. 219, No. 2, 903--936 (2016; Zbl 1333.35274) Full Text: DOI arXiv OpenURL
Bucur, Dorin; Giacomini, Alessandro The Saint-Venant inequality for the Laplace operator with Robin boundary conditions. (English) Zbl 1334.35183 Milan J. Math. 83, No. 2, 327-343 (2015). MSC: 35P15 35J05 47J30 PDF BibTeX XML Cite \textit{D. Bucur} and \textit{A. Giacomini}, Milan J. Math. 83, No. 2, 327--343 (2015; Zbl 1334.35183) Full Text: DOI OpenURL
Enache, C.; Philippin, G. A. On some isoperimetric inequalities involving eigenvalues of fixed membranes. (English) Zbl 1328.35129 Appl. Math. Lett. 50, 10-15 (2015). MSC: 35P15 PDF BibTeX XML Cite \textit{C. Enache} and \textit{G. A. Philippin}, Appl. Math. Lett. 50, 10--15 (2015; Zbl 1328.35129) Full Text: DOI OpenURL
Parini, Enea; Ruf, Bernhard; Tarsi, Cristina Higher-order functional inequalities related to the clamped 1-biharmonic operator. (English) Zbl 1346.46028 Ann. Mat. Pura Appl. (4) 194, No. 6, 1835-1858 (2015). MSC: 46E35 35G15 35P30 49J52 PDF BibTeX XML Cite \textit{E. Parini} et al., Ann. Mat. Pura Appl. (4) 194, No. 6, 1835--1858 (2015; Zbl 1346.46028) Full Text: DOI OpenURL
Lampart, Jonas Convergence of nodal sets in the adiabatic limit. (English) Zbl 1311.58017 Ann. Global Anal. Geom. 47, No. 2, 147-166 (2015). MSC: 58J50 58J32 35B05 PDF BibTeX XML Cite \textit{J. Lampart}, Ann. Global Anal. Geom. 47, No. 2, 147--166 (2015; Zbl 1311.58017) Full Text: DOI arXiv OpenURL
Krejčiřík, David; Tušek, Matěj Nodal sets of thin curved layers. (English) Zbl 1323.35109 J. Differ. Equations 258, No. 2, 281-301 (2015). Reviewer: Peter B. Gilkey (Eugene) MSC: 35P05 58J50 PDF BibTeX XML Cite \textit{D. Krejčiřík} and \textit{M. Tušek}, J. Differ. Equations 258, No. 2, 281--301 (2015; Zbl 1323.35109) Full Text: DOI arXiv OpenURL
Feng, Yan-qing; Wang, Zhong-ying; Weng, Chuan-jun Global homeomorphism and applications to the existence and uniqueness of solutions of some differential equations. (English) Zbl 1417.35026 Adv. Difference Equ. 2014, Paper No. 52, 9 p. (2014). MSC: 35J40 PDF BibTeX XML Cite \textit{Y.-q. Feng} et al., Adv. Difference Equ. 2014, Paper No. 52, 9 p. (2014; Zbl 1417.35026) Full Text: DOI OpenURL
Li, Yuanfei; Lin, Changhao Continuous dependence for the nonhomogeneous Brinkman-Forchheimer equations in a semi-infinite pipe. (English) Zbl 1335.35198 Appl. Math. Comput. 244, 201-208 (2014). MSC: 35Q35 35D30 76S05 PDF BibTeX XML Cite \textit{Y. Li} and \textit{C. Lin}, Appl. Math. Comput. 244, 201--208 (2014; Zbl 1335.35198) Full Text: DOI OpenURL
Huet, Denise A survey of some topics related to differential operators. (English) Zbl 1300.47002 J. Oper. 2013, Article ID 562963, 17 p. (2013). MSC: 47-02 47F05 47B38 47B44 54H20 47D06 35B25 35K57 35B41 34L40 35B35 PDF BibTeX XML Cite \textit{D. Huet}, J. Oper. 2013, Article ID 562963, 17 p. (2013; Zbl 1300.47002) Full Text: DOI OpenURL
Yang, Dong-Hui; Guo, Bao-Zhu On nodal line of the second eigenfunction of the Laplacian over concave domains in \(\mathbb R^2\). (English) Zbl 1282.35264 J. Syst. Sci. Complex. 26, No. 3, 483-488 (2013). MSC: 35P20 PDF BibTeX XML Cite \textit{D.-H. Yang} and \textit{B.-Z. Guo}, J. Syst. Sci. Complex. 26, No. 3, 483--488 (2013; Zbl 1282.35264) Full Text: DOI OpenURL
Benguria, Rafael D.; Linde, Helmut; Loewe, Benjamín Isoperimetric inequalities for eigenvalues of the Laplacian and the Schrödinger operator. (English) Zbl 1260.35001 Bull. Math. Sci. 2, No. 1, 1-56 (2012). Reviewer: Bodo Dittmar (Halle) MSC: 35-02 35P15 35J05 35J10 PDF BibTeX XML Cite \textit{R. D. Benguria} et al., Bull. Math. Sci. 2, No. 1, 1--56 (2012; Zbl 1260.35001) Full Text: DOI OpenURL
Li, Yuanfei; Liu, Yan; Luo, Shiguang; Lin, Changhao Decay estimates for the Brinkman-Forchheimer equations in a semi-infinite pipe. (English) Zbl 1232.35130 ZAMM, Z. Angew. Math. Mech. 92, No. 2, 160-176 (2012). MSC: 35Q35 76Sxx PDF BibTeX XML Cite \textit{Y. Li} et al., ZAMM, Z. Angew. Math. Mech. 92, No. 2, 160--176 (2012; Zbl 1232.35130) Full Text: DOI OpenURL
Liu, Genqian The Weyl-type asymptotic formula for biharmonic Steklov eigenvalues on Riemannian manifolds. (English) Zbl 1228.35163 Adv. Math. 228, No. 4, 2162-2217 (2011). Reviewer: Peter B. Gilkey (Eugene) MSC: 35P20 58C40 58J50 PDF BibTeX XML Cite \textit{G. Liu}, Adv. Math. 228, No. 4, 2162--2217 (2011; Zbl 1228.35163) Full Text: DOI arXiv OpenURL
Kennedy, J. B. The nodal line of the second eigenfunction of the Robin Laplacian in \(\mathbb R^2\) can be closed. (English) Zbl 1223.35242 J. Differ. Equations 251, No. 12, 3606-3624 (2011). MSC: 35P05 35B05 35J05 PDF BibTeX XML Cite \textit{J. B. Kennedy}, J. Differ. Equations 251, No. 12, 3606--3624 (2011; Zbl 1223.35242) Full Text: DOI arXiv OpenURL
Ratzkin, Jesse Eigenvalues of Euclidean wedge domains in higher dimensions. (English) Zbl 1247.35080 Calc. Var. Partial Differ. Equ. 42, No. 1-2, 93-106 (2011). Reviewer: Emily Dryden (Lewisburg, PA) MSC: 35P15 PDF BibTeX XML Cite \textit{J. Ratzkin}, Calc. Var. Partial Differ. Equ. 42, No. 1--2, 93--106 (2011; Zbl 1247.35080) Full Text: DOI arXiv OpenURL
Li, Yuanfei; Liu, Yan; Lin, Changhao Decay estimates for homogeneous Boussinesq equations in a semi-infinite pipe. (English) Zbl 1219.35193 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 74, No. 13, 4399-4417 (2011). MSC: 35Q35 35B40 76D05 PDF BibTeX XML Cite \textit{Y. Li} et al., Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 74, No. 13, 4399--4417 (2011; Zbl 1219.35193) Full Text: DOI OpenURL
Daners, Daniel Krahn’s proof of the Rayleigh conjecture revisited. (English) Zbl 1210.35250 Arch. Math. 96, No. 2, 187-199 (2011). MSC: 35Q74 74K15 74P20 35P15 01A60 PDF BibTeX XML Cite \textit{D. Daners}, Arch. Math. 96, No. 2, 187--199 (2011; Zbl 1210.35250) Full Text: DOI OpenURL
Duan, Huo-Yuan; Tan, Roger C. E. On the Poincaré-Friedrichs inequality for piecewise \(H^{1}\) functions in anisotropic discontinuous Galerkin finite element methods. (English) Zbl 1208.26023 Math. Comput. 80, No. 273, 119-140 (2011). MSC: 26D10 46E35 65M60 65N30 PDF BibTeX XML Cite \textit{H.-Y. Duan} and \textit{R. C. E. Tan}, Math. Comput. 80, No. 273, 119--140 (2011; Zbl 1208.26023) Full Text: DOI OpenURL
Liu, Genqian Some inequalities and asymptotic formulas for eigenvalues on Riemannian manifolds. (English) Zbl 1209.53027 J. Math. Anal. Appl. 376, No. 1, 349-364 (2011). Reviewer: Jan Kurek (Lublin) MSC: 53C21 58J50 PDF BibTeX XML Cite \textit{G. Liu}, J. Math. Anal. Appl. 376, No. 1, 349--364 (2011; Zbl 1209.53027) Full Text: DOI arXiv Link OpenURL
Girouard, A.; Polterovich, I. On the Hersch-Payne-Schiffer inequalities for Steklov eigenvalues. (English. Russian original) Zbl 1217.35125 Funct. Anal. Appl. 44, No. 2, 106-117 (2010); translation from Funkts. Anal. Prilozh. 44, No. 2, 33-47 (2010). Reviewer: Jesús Hernández (Madrid) MSC: 35P05 49R05 35J25 47A75 PDF BibTeX XML Cite \textit{A. Girouard} and \textit{I. Polterovich}, Funct. Anal. Appl. 44, No. 2, 106--117 (2010; Zbl 1217.35125); translation from Funkts. Anal. Prilozh. 44, No. 2, 33--47 (2010) Full Text: DOI arXiv OpenURL
Kennedy, James B. On the isoperimetric problem for the Laplacian with Robin and Wentzell boundary conditions. (English) Zbl 1198.35162 Bull. Aust. Math. Soc. 82, No. 2, 348-350 (2010). MSC: 35P15 35J05 35B40 35J20 35J25 49J40 PDF BibTeX XML Cite \textit{J. B. Kennedy}, Bull. Aust. Math. Soc. 82, No. 2, 348--350 (2010; Zbl 1198.35162) Full Text: DOI OpenURL
Ashbaugh, Mark S.; Gesztesy, Fritz; Mitrea, Marius; Teschl, Gerald Spectral theory for perturbed Krein Laplacians in nonsmooth domains. (English) Zbl 1191.35188 Adv. Math. 223, No. 4, 1372-1467 (2010). Reviewer: Bodo Dittmar (Halle) MSC: 35P05 35P20 35J10 81Q10 PDF BibTeX XML Cite \textit{M. S. Ashbaugh} et al., Adv. Math. 223, No. 4, 1372--1467 (2010; Zbl 1191.35188) Full Text: DOI arXiv OpenURL
Wang, Qiaoling; Xia, Changyu Sharp bounds for the first non-zero Stekloff eigenvalues. (English) Zbl 1175.35095 J. Funct. Anal. 257, No. 8, 2635-2644 (2009). MSC: 35P15 58J50 35R01 53C44 PDF BibTeX XML Cite \textit{Q. Wang} and \textit{C. Xia}, J. Funct. Anal. 257, No. 8, 2635--2644 (2009; Zbl 1175.35095) Full Text: DOI OpenURL
Ratzkin, Jesse; Treibergs, Andrejs A Payne-Weinberger eigenvalue estimate for wedge domains on spheres. (English) Zbl 1169.53029 Proc. Am. Math. Soc. 137, No. 7, 2299-2309 (2009). MSC: 53C21 58J50 35P15 PDF BibTeX XML Cite \textit{J. Ratzkin} and \textit{A. Treibergs}, Proc. Am. Math. Soc. 137, No. 7, 2299--2309 (2009; Zbl 1169.53029) Full Text: DOI arXiv OpenURL
Bandle, Catherine; Wagner, Alfred Optimization problems for an energy functional with mass constraint revisited. (English) Zbl 1158.49042 J. Math. Anal. Appl. 352, No. 1, 400-417 (2009). MSC: 49Q10 49J40 PDF BibTeX XML Cite \textit{C. Bandle} and \textit{A. Wagner}, J. Math. Anal. Appl. 352, No. 1, 400--417 (2009; Zbl 1158.49042) Full Text: DOI OpenURL
Kang, Hyeonbae; Milton, Graeme W. Solutions to the Pólya-Szegö conjecture and the weak Eshelby conjecture. (English) Zbl 1134.74013 Arch. Ration. Mech. Anal. 188, No. 1, 93-116 (2008). MSC: 74E05 PDF BibTeX XML Cite \textit{H. Kang} and \textit{G. W. Milton}, Arch. Ration. Mech. Anal. 188, No. 1, 93--116 (2008; Zbl 1134.74013) Full Text: DOI OpenURL
Liu, Genqian Rellich type identities for eigenvalue problems and application to the Pompeiu problem. (English) Zbl 1135.35008 J. Math. Anal. Appl. 330, No. 2, 963-975 (2007). Reviewer: Messoud A. Efendiev (Berlin) MSC: 35A25 74G60 35J25 35J40 35P05 74K20 PDF BibTeX XML Cite \textit{G. Liu}, J. Math. Anal. Appl. 330, No. 2, 963--975 (2007; Zbl 1135.35008) Full Text: DOI OpenURL
Liu, Genqian Symmetry theorems for the overdetermined eigenvalue problems. (English) Zbl 1129.35051 J. Differ. Equations 233, No. 2, 585-600 (2007). Reviewer: Boris V. Loginov (Ul’yanovsk) MSC: 35N05 35J25 PDF BibTeX XML Cite \textit{G. Liu}, J. Differ. Equations 233, No. 2, 585--600 (2007; Zbl 1129.35051) Full Text: DOI OpenURL
Du, Yihong; Shi, Junping A diffusive predator-prey model with a protection zone. (English) Zbl 1142.35022 J. Differ. Equations 229, No. 1, 63-91 (2006). Reviewer: Sebastian Anita (Iaşi) MSC: 35K57 35J55 92D40 35J60 92D25 PDF BibTeX XML Cite \textit{Y. Du} and \textit{J. Shi}, J. Differ. Equations 229, No. 1, 63--91 (2006; Zbl 1142.35022) Full Text: DOI OpenURL
Daners, Daniel A Faber-Krahn inequality for Robin problems in any space dimension. (English) Zbl 1220.35103 Math. Ann. 335, No. 4, 767-785 (2006). MSC: 35P15 35J25 PDF BibTeX XML Cite \textit{D. Daners}, Math. Ann. 335, No. 4, 767--785 (2006; Zbl 1220.35103) Full Text: DOI OpenURL
de Nápoli, Pablo L.; Pinasco, Juan P. Estimates for eigenvalues of quasilinear elliptic systems. (English) Zbl 1100.35077 J. Differ. Equations 227, No. 1, 102-115 (2006). MSC: 35P30 35P15 34L30 34L15 35J70 PDF BibTeX XML Cite \textit{P. L. de Nápoli} and \textit{J. P. Pinasco}, J. Differ. Equations 227, No. 1, 102--115 (2006; Zbl 1100.35077) Full Text: DOI OpenURL
Komendarczyk, R. On the contact geometry of nodal sets. (English) Zbl 1156.53318 Trans. Am. Math. Soc. 358, No. 6, 2399-2413 (2006). MSC: 53D10 35J05 58J50 PDF BibTeX XML Cite \textit{R. Komendarczyk}, Trans. Am. Math. Soc. 358, No. 6, 2399--2413 (2006; Zbl 1156.53318) Full Text: DOI arXiv OpenURL
Juutinen, Petri; Lindqvist, Peter On the higher eigenvalues for the \(\infty\)-eigenvalue problem. (English) Zbl 1080.35057 Calc. Var. Partial Differ. Equ. 23, No. 2, 169-192 (2005). Reviewer: Massimo Lanza de Cristoforis (Padova) MSC: 35P30 35J70 49R50 35P15 PDF BibTeX XML Cite \textit{P. Juutinen} and \textit{P. Lindqvist}, Calc. Var. Partial Differ. Equ. 23, No. 2, 169--192 (2005; Zbl 1080.35057) Full Text: DOI OpenURL
Bañuelos, Rodrigo; Kulczycki, Tadeusz The Cauchy process and the Steklov problem. (English) Zbl 1055.60072 J. Funct. Anal. 211, No. 2, 355-423 (2004). Reviewer: Eckhard Giere (Clausthal-Zellerfeld) MSC: 60J45 60G52 PDF BibTeX XML Cite \textit{R. Bañuelos} and \textit{T. Kulczycki}, J. Funct. Anal. 211, No. 2, 355--423 (2004; Zbl 1055.60072) Full Text: DOI OpenURL
Fournais, Søren The nodal surface of the second eigenfunction of the Laplacian in \(\mathbb{R}^D\) can be closed. (English) Zbl 1011.47033 J. Differ. Equations 173, No. 1, 145-159 (2001). Reviewer: J.Schmeelk (Richmond) MSC: 47F05 35P05 35J05 PDF BibTeX XML Cite \textit{S. Fournais}, J. Differ. Equations 173, No. 1, 145--159 (2001; Zbl 1011.47033) Full Text: DOI OpenURL
Dragomir, Sever S.; Keady, Grant A Hadamard-Jensen inequality and an application to the elastic torsion problem. (English) Zbl 1026.35032 Appl. Anal. 75, No. 3-4, 285-295 (2000). MSC: 35J05 35B05 35B45 52A40 PDF BibTeX XML Cite \textit{S. S. Dragomir} and \textit{G. Keady}, Appl. Anal. 75, No. 3--4, 285--295 (2000; Zbl 1026.35032) Full Text: DOI Link OpenURL
Jerison, David; Nadirashvili, Nikolai The “hot spots” conjecture for domains with two axes of symmetry. (English) Zbl 0948.35029 J. Am. Math. Soc. 13, No. 4, 741-772 (2000). Reviewer: Vladimir Mityushev (Słupsk) MSC: 35J05 35B65 35J25 PDF BibTeX XML Cite \textit{D. Jerison} and \textit{N. Nadirashvili}, J. Am. Math. Soc. 13, No. 4, 741--772 (2000; Zbl 0948.35029) Full Text: DOI OpenURL
Acker, Andrew Isoperimetric inequalities for the energy of uniform-vorticity flows in channels of uniform width. (English) Zbl 0951.76078 Math. Methods Appl. Sci. 23, No. 3, 255-269 (2000). Reviewer: Valeriu Al.Sava (Iaşi) MSC: 76M30 76D17 76B47 PDF BibTeX XML Cite \textit{A. Acker}, Math. Methods Appl. Sci. 23, No. 3, 255--269 (2000; Zbl 0951.76078) Full Text: DOI OpenURL
Hoffmann-Ostenhof, M.; Hoffmann-Ostenhof, T.; Nadirashvili, N. The nodal line of the second eigenfunction of the Laplacian in \(\mathbb{R}^2\) can be closed. (English) Zbl 0956.35027 Duke Math. J. 90, No. 3, 631-640 (1997). MSC: 35J05 35B05 35P99 35B30 PDF BibTeX XML Cite \textit{M. Hoffmann-Ostenhof} et al., Duke Math. J. 90, No. 3, 631--640 (1997; Zbl 0956.35027) Full Text: DOI OpenURL
Song, J. C. Decay estimates in steady semi-infinite thermal pipe flow. (English) Zbl 0882.76020 J. Math. Anal. Appl. 207, No. 1, 45-60 (1997). MSC: 76D05 35Q30 80A20 PDF BibTeX XML Cite \textit{J. C. Song}, J. Math. Anal. Appl. 207, No. 1, 45--60 (1997; Zbl 0882.76020) Full Text: DOI OpenURL
Payne, L. E.; Philippin, G. A. On gradient maximum principles for quasilinear elliptic equations. (English) Zbl 0820.35018 Nonlinear Anal., Theory Methods Appl. 23, No. 3, 387-398 (1994). Reviewer: V.Ferone (Napoli) MSC: 35B50 35J60 PDF BibTeX XML Cite \textit{L. E. Payne} and \textit{G. A. Philippin}, Nonlinear Anal., Theory Methods Appl. 23, No. 3, 387--398 (1994; Zbl 0820.35018) Full Text: DOI OpenURL
Hansen, W.; Nadirashvili, N. Isoperimetric inequalities in potential theory. (English) Zbl 0796.31003 Potential Anal. 3, No. 1, 1-14 (1994). Reviewer: J.Hersch (Zürich) MSC: 31B15 31A15 52A40 35P15 PDF BibTeX XML Cite \textit{W. Hansen} and \textit{N. Nadirashvili}, Potential Anal. 3, No. 1, 1--14 (1994; Zbl 0796.31003) Full Text: DOI OpenURL
Horgan, C. O.; Payne, L. E. Phragmén-Lindelöf type results for harmonic functions with nonlinear boundary conditions. (English) Zbl 0790.31002 Arch. Ration. Mech. Anal. 122, No. 2, 123-144 (1993). Reviewer: C.Bandle (Basel) MSC: 31B05 35J65 PDF BibTeX XML Cite \textit{C. O. Horgan} and \textit{L. E. Payne}, Arch. Ration. Mech. Anal. 122, No. 2, 123--144 (1993; Zbl 0790.31002) Full Text: DOI OpenURL
Payne, L. E.; Philippin, G. A. On two free boundary problems in potential theory. (English) Zbl 0760.31003 J. Math. Anal. Appl. 161, No. 2, 332-342 (1991). Reviewer: T.O.Shaposhnikova (Linköping) MSC: 31B35 35R35 35J60 PDF BibTeX XML Cite \textit{L. E. Payne} and \textit{G. A. Philippin}, J. Math. Anal. Appl. 161, No. 2, 332--342 (1991; Zbl 0760.31003) Full Text: DOI OpenURL
Hersch, Joseph; Sawyer, William Numerical implementation of coherence for the example of the “Swiss Cross”. (English) Zbl 0743.65085 Numer. Math. 59, No. 7, 659-665 (1991). Reviewer: W.Velte (Würzburg) MSC: 65N25 65N55 65N06 35P15 35J05 74K20 PDF BibTeX XML Cite \textit{J. Hersch} and \textit{W. Sawyer}, Numer. Math. 59, No. 7, 659--665 (1991; Zbl 0743.65085) Full Text: DOI EuDML OpenURL
Jerison, David Prescribing harmonic measure on convex domains. (English) Zbl 0754.31007 Invent. Math. 105, No. 2, 375-400 (1991). Reviewer: S.Salsa (Milano) MSC: 31C12 60B05 PDF BibTeX XML Cite \textit{D. Jerison}, Invent. Math. 105, No. 2, 375--400 (1991; Zbl 0754.31007) Full Text: DOI EuDML OpenURL
Dassios, George Low-frequency moments in inverse scattering theory. (English) Zbl 0704.47045 J. Math. Phys. 31, No. 7, 1691-1692 (1990). MSC: 47N50 81U40 47A40 PDF BibTeX XML Cite \textit{G. Dassios}, J. Math. Phys. 31, No. 7, 1691--1692 (1990; Zbl 0704.47045) Full Text: DOI OpenURL
Dassios, George; Payne, L. E. Energy bounds for Rayleigh scattering by an elastic cavity. (English) Zbl 0691.73018 J. Math. Anal. Appl. 138, No. 1, 106-128 (1989). Reviewer: G.A.Perla Menzala MSC: 74J20 35P25 74S30 74J15 74J10 PDF BibTeX XML Cite \textit{G. Dassios} and \textit{L. E. Payne}, J. Math. Anal. Appl. 138, No. 1, 106--128 (1989; Zbl 0691.73018) Full Text: DOI OpenURL
Philippin, Gérard A. Some extensions of Dirichlet’s and Thomson’s principles for harmonic vectors. (English) Zbl 0685.35037 Appl. Anal. 33, No. 1-2, 13-23 (1989). MSC: 35J50 35J20 35J25 PDF BibTeX XML Cite \textit{G. A. Philippin}, Appl. Anal. 33, No. 1--2, 13--23 (1989; Zbl 0685.35037) Full Text: DOI OpenURL
Kobelev, V. V. An isoperimetric inequality in the optimization of circular rings under normal pressure. (English) Zbl 0644.90098 J. Optimization Theory Appl. 61, No. 3, 403-408 (1989). Reviewer: V.V.Kobelev MSC: 90C90 74P99 PDF BibTeX XML Cite \textit{V. V. Kobelev}, J. Optim. Theory Appl. 61, No. 3, 403--408 (1989; Zbl 0644.90098) Full Text: DOI OpenURL
Dassios, George; Payne, L. E. Estimates for low-frequency elastic scattering by a rigid body. (English) Zbl 0691.73019 J. Elasticity 20, No. 3, 161-180 (1988). Reviewer: G.A.Perla Menzala MSC: 74J20 35P25 PDF BibTeX XML Cite \textit{G. Dassios} and \textit{L. E. Payne}, J. Elasticity 20, No. 3, 161--180 (1988; Zbl 0691.73019) Full Text: DOI OpenURL
Villaggio, Piero The virtual friction of a sphere vibrating in an elastic medium. (English) Zbl 0656.73053 Arch. Ration. Mech. Anal. 102, No. 3, 193-203 (1988). Reviewer: H.Bufler MSC: 74A55 74M15 74H45 PDF BibTeX XML Cite \textit{P. Villaggio}, Arch. Ration. Mech. Anal. 102, No. 3, 193--203 (1988; Zbl 0656.73053) Full Text: DOI OpenURL
Dassios, George On the harmonic radius and the capacity of an inverse ellipsoid. (English) Zbl 0655.31003 J. Math. Phys. 29, No. 4, 835-836 (1988). MSC: 31B20 31B15 PDF BibTeX XML Cite \textit{G. Dassios}, J. Math. Phys. 29, No. 4, 835--836 (1988; Zbl 0655.31003) Full Text: DOI OpenURL
Dittmar, Bodo Zur Berechnung Stekloffscher Eigenwerte. (Computation of Steklov eigenvalues.). (German) Zbl 0651.65077 Z. Angew. Math. Phys. 39, No. 3, 351-366 (1988). Reviewer: Raoul F. Gloden (Ispra) MSC: 65N25 35P15 PDF BibTeX XML Cite \textit{B. Dittmar}, Z. Angew. Math. Phys. 39, No. 3, 351--366 (1988; Zbl 0651.65077) Full Text: DOI OpenURL
Philippin, Gerard A. Complementary isoperimetric inequalities for capacity, polarization, and virtual mass. (English) Zbl 0638.35026 Appl. Anal. 28, No. 3, 207-221 (1988). Reviewer: G.A.Philippin MSC: 35J25 35A30 35B35 PDF BibTeX XML Cite \textit{G. A. Philippin}, Appl. Anal. 28, No. 3, 207--221 (1988; Zbl 0638.35026) Full Text: DOI OpenURL
Kawohl, Bernhard; Sweers, Guido Remarks on eigenvalues and eigenfunctions of a special elliptic system. (English) Zbl 0644.35073 Z. Angew. Math. Phys. 38, 730-740 (1987). Reviewer: G.F.Roach MSC: 35P05 35J25 PDF BibTeX XML Cite \textit{B. Kawohl} and \textit{G. Sweers}, Z. Angew. Math. Phys. 38, 730--740 (1987; Zbl 0644.35073) Full Text: DOI OpenURL
Payne, L. E.; Philippin, G. A. Isoperimetric inequalities for polarization and virtual mass. (English) Zbl 0628.35025 J. Anal. Math. 47, 255-267 (1986). Reviewer: C.Bandle MSC: 35J15 35J25 35C15 PDF BibTeX XML Cite \textit{L. E. Payne} and \textit{G. A. Philippin}, J. Anal. Math. 47, 255--267 (1986; Zbl 0628.35025) Full Text: DOI OpenURL
Aviles, Patricio Conformal complete metrics with prescribed non-negative Gaussian curvature in \({\mathbb{R}}^ 2\). (English) Zbl 0592.53034 Invent. Math. 83, 519-544 (1986). Reviewer: R.Walter MSC: 53C20 35J60 PDF BibTeX XML Cite \textit{P. Aviles}, Invent. Math. 83, 519--544 (1986; Zbl 0592.53034) Full Text: DOI EuDML OpenURL
Goodman, Jonathan; Kohn, Robert V.; Reyna, Luis Numerical study of a relaxed variational problem from optimal design. (English) Zbl 0591.73119 Comput. Methods Appl. Mech. Eng. 57, 107-127 (1986). MSC: 74P99 49M20 PDF BibTeX XML Cite \textit{J. Goodman} et al., Comput. Methods Appl. Mech. Eng. 57, 107--127 (1986; Zbl 0591.73119) Full Text: DOI OpenURL
Cosner, Chris Estimates for eigenfunctions and eigenvalues of nonlinear elliptic problems. (English) Zbl 0545.35070 Trans. Am. Math. Soc. 282, 59-75 (1984). Reviewer: C.Bandle MSC: 35P30 35P15 35J65 35J25 35B30 PDF BibTeX XML Cite \textit{C. Cosner}, Trans. Am. Math. Soc. 282, 59--75 (1984; Zbl 0545.35070) Full Text: DOI OpenURL
Murray, J. D.; Sperb, R. P. Minimum domains for spatial patterns in a class of reaction diffusion equations. (English) Zbl 0526.92013 J. Math. Biol. 18, 169-184 (1983). MSC: 92D25 35B40 35K60 PDF BibTeX XML Cite \textit{J. D. Murray} and \textit{R. P. Sperb}, J. Math. Biol. 18, 169--184 (1983; Zbl 0526.92013) Full Text: DOI OpenURL
Sperb, Rene P. On an eigenvalue problem arising in chemistry. (English) Zbl 0524.45002 Z. Angew. Math. Phys. 32, 450-463 (1981). MSC: 45C05 45K05 80A32 PDF BibTeX XML Cite \textit{R. P. Sperb}, Z. Angew. Math. Phys. 32, 450--463 (1981; Zbl 0524.45002) Full Text: DOI OpenURL
Keady, G. An elliptic boundary-value problem with a discontinuous nonlinearity. (English) Zbl 0511.35032 Proc. R. Soc. Edinb., Sect. A 91, 161-174 (1981). MSC: 35J65 35J25 35B99 76B47 49J40 PDF BibTeX XML Cite \textit{G. Keady}, Proc. R. Soc. Edinb., Sect. A, Math. 91, 161--174 (1981; Zbl 0511.35032) Full Text: DOI OpenURL
Talenti, Giorgio On the first eigenvalue of the clamped plate. (English) Zbl 0475.73050 Ann. Mat. Pura Appl., IV. Ser. 129, 265-280 (1981). MSC: 74H45 74K20 35J05 35P15 PDF BibTeX XML Cite \textit{G. Talenti}, Ann. Mat. Pura Appl. (4) 129, 265--280 (1981; Zbl 0475.73050) Full Text: DOI OpenURL
Fraenkel, L. E. A lower bound for electrostatic capacity in the plane. (English) Zbl 0466.31007 Proc. R. Soc. Edinb., Sect. A 88, 267-273 (1981). MSC: 31A15 78A30 PDF BibTeX XML Cite \textit{L. E. Fraenkel}, Proc. R. Soc. Edinb., Sect. A, Math. 88, 267--273 (1981; Zbl 0466.31007) Full Text: DOI OpenURL
Chavel, Isaac; Feldman, Edgar A. Isoperimetric inequalities on curved surfaces. (English) Zbl 0461.53012 Adv. Math. 37, 83-98 (1980). MSC: 53B21 53B50 52A40 PDF BibTeX XML Cite \textit{I. Chavel} and \textit{E. A. Feldman}, Adv. Math. 37, 83--98 (1980; Zbl 0461.53012) Full Text: DOI OpenURL
Sperb, Rene P. Isoperimetric inequalities in a boundary value problem on a Riemannian manifold. (English) Zbl 0456.58025 Z. Angew. Math. Phys. 31, 740-753 (1980). MSC: 58J10 30E25 35J05 35B50 53A35 58J50 PDF BibTeX XML Cite \textit{R. P. Sperb}, Z. Angew. Math. Phys. 31, 740--753 (1980; Zbl 0456.58025) Full Text: DOI OpenURL
Berenstein, Carlos Alberto An inverse spectral theorem and its relation to the Pompeiu problem. (English) Zbl 0449.35024 J. Anal. Math. 37, 128-144 (1980). MSC: 35J25 35R30 35N99 35P99 42B99 PDF BibTeX XML Cite \textit{C. A. Berenstein}, J. Anal. Math. 37, 128--144 (1980; Zbl 0449.35024) Full Text: DOI OpenURL
Alexiades, Vasilios; Elcrat, Alan R.; Schaefer, Philip W. Existence theorems for some nonlinear fourth order elliptic boundary value problems. (English) Zbl 0444.35032 Nonlinear Anal., Theory Methods Appl. 4, 805-813 (1980). MSC: 35J40 35J65 35A05 PDF BibTeX XML Cite \textit{V. Alexiades} et al., Nonlinear Anal., Theory Methods Appl. 4, 805--813 (1980; Zbl 0444.35032) Full Text: DOI OpenURL
Hersch, Joseph On the torsion function, Green’s function and conformal radius: An isoperimetric inequality of Polya and Szegö, some extensions and applications. (English) Zbl 0448.35023 J. Anal. Math. 36, 102-117 (1979). MSC: 35B99 35J05 74K10 31A15 30C85 PDF BibTeX XML Cite \textit{J. Hersch}, J. Anal. Math. 36, 102--117 (1979; Zbl 0448.35023) Full Text: DOI OpenURL
Sperb, Rene P. On a mathematical model describing the aggregation of amoebae. (English) Zbl 0419.92002 Bull. Math. Biol. 41, 555-571 (1979). MSC: 92B05 35K05 35G10 35K25 PDF BibTeX XML Cite \textit{R. P. Sperb}, Bull. Math. Biol. 41, 555--571 (1979; Zbl 0419.92002) Full Text: DOI OpenURL