## Found 385 Documents (Results 1–100)

100
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### Nonuniqueness of solutions of a class of $$\ell_0$$-minimization problems. (English)Zbl 07443762

MSC:  90C26 90C30 94A12
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### Nonuniqueness of solution for initial value problems of impulsive Hilfer fractional differential equations. (English)Zbl 07376692

MSC:  34A08 34A37 34A12
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### Variations of a class of Monge-Ampère-type functionals and their applications. (English)Zbl 1468.35047

MSC:  35J20 35J96 52A40
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### Vortex phantoms in the stationary Kochin-Yudovich flow problem. (English. Russian original)Zbl 1465.76025

Comput. Math. Math. Phys. 61, No. 4, 664-667 (2021); translation from Zh. Vychisl. Mat. Mat. Fiz. 61, No. 4, 684-688 (2021).
MSC:  76B47 76B03 35Q31
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### Nonuniqueness of Leray-Hopf solutions for a dyadic model. (English. Russian original)Zbl 1464.35178

St. Petersbg. Math. J. 32, No. 2, 371-387 (2021); translation from Algebra Anal. 32, No. 2, 229-253 (2020).
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### On some recent results concerning non-uniqueness for the transport equation. (English)Zbl 1462.35325

Bressan, Alberto (ed.) et al., Hyperbolic problems: theory, numerics, applications. Proceedings of the 17th international conference, HYP2018, Pennsylvania State University, University Park, PA, USA, June 25–29, 2018. Springfield, MO: American Institute of Mathematical Sciences (AIMS). AIMS Ser. Appl. Math. 10, 562-568 (2020).
MSC:  35Q49 35A02 35F10
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### On non-uniqueness below Onsager’s critical exponent. (English)Zbl 1462.35265

Bressan, Alberto (ed.) et al., Hyperbolic problems: theory, numerics, applications. Proceedings of the 17th international conference, HYP2018, Pennsylvania State University, University Park, PA, USA, June 25–29, 2018. Springfield, MO: American Institute of Mathematical Sciences (AIMS). AIMS Ser. Appl. Math. 10, 164-174 (2020).
MSC:  35Q31 76D03

### One class of systems of linear Fredholm integral equations of the third kind on the real line with multipoint singularities. (English. Russian original)Zbl 1464.45001

Differ. Equ. 56, No. 10, 1363-1370 (2020); translation from Differ. Uravn. 56, No. 10, 1394-1401 (2020).
MSC:  45B05 45F05
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### Non-uniqueness of weak solutions to 2D hypoviscous Navier-Stokes equations. (English)Zbl 1434.35059

MSC:  35Q30 35D30
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### On attractors of generalized semiflows with impulses. (English)Zbl 1440.37036

MSC:  37C70 37C10
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### On nonuniqueness for the anisotropic Calderón problem with partial data. (English)Zbl 1433.58026

MSC:  58J50 81U40 35P25
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### Uncertainty, ghosts, and resolution in Radon problems. (English)Zbl 1456.44003

Ramlau, Ronny (ed.) et al., The Radon transform. The first 100 years and beyond. Berlin: De Gruyter. Radon Ser. Comput. Appl. Math. 22, 169-188 (2019).
MSC:  44A12 65R10 33C55
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### On smooth vortex catastrophe of uniqueness for stationary flows of an ideal fluid. (English. Russian original)Zbl 1441.76029

Comput. Math. Math. Phys. 59, No. 10, 1742-1752 (2019); translation from Zh. Vychisl. Mat. Mat. Fiz. 59, No. 10, 1803-1814 (2019).
MSC:  76B47 76B03 35Q31
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### Degenerate elliptic equations and nonuniqueness of solutions to the Kolmogorov equation. (English. Russian original)Zbl 1433.35018

Dokl. Math. 100, No. 1, 354-357 (2019); translation from Dokl. Akad. Nauk, Ross. Akad. Nauk 487, No. 4, 361-364 (2019).
MSC:  35J05 35J15 35A02
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### On the convergence problem in mean field games: a two state model without uniqueness. (English)Zbl 1426.91025

MSC:  91A15 91A23 60H10
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### Statistical physics on a product of trees. (English. French summary)Zbl 1467.60079

MSC:  60K35 60B99
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### Multiplicity of solutions to the Yamabe equation on warped products. (English)Zbl 1418.35109

MSC:  35J15 58C20 58J60
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### Corrigendum to: “Nonuniqueness in vector-valued calculus of variations in $$L^\infty$$ and some linear elliptic systems”. (English)Zbl 1415.31005

MSC:  31C45 35J47 30C65
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### About nonuniqueness of solutions of the Showalter-Sidorov problem for one mathematical model of nerve impulse spread in membrane. (English)Zbl 1433.60071

MSC:  60H30 35R15 35Q92
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### Self-similar solutions to nonlinear Dirac equations and an application to nonuniqueness. (English)Zbl 1414.35190

MSC:  35Q41 53C35 35D35
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### Dirichlet problem for a mixed type equation of the second kind in exceptional cases. (English. Russian original)Zbl 1400.35189

Differ. Equ. 54, No. 4, 562-565 (2018); translation from Differ. Uravn. 54, No. 4, 565-568 (2018).
MSC:  35M12 35A01 35A02
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### Special discontinuities in nonlinearly elastic media. (English. Russian original)Zbl 1457.74102

Comput. Math. Math. Phys. 57, No. 6, 1013-1021 (2017); translation from Zh. Vychisl. Mat. Mat. Fiz. 57, No. 6, 1023-1032 (2017).
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### Solutions to systems of linear Fredholm integral equations of the third kind with multipoint singularities. (English. Russian original)Zbl 1433.45001

Dokl. Math. 95, No. 3, 235-239 (2017); translation from Dokl. Akad. Nauk, Ross. Akad. Nauk 474, No. 4, 405-409 (2017).
MSC:  45B05
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### Solvability of the Dirichlet problem for a mixed-type equation of the second kind. (English. Russian original)Zbl 1372.35189

Differ. Equ. 53, No. 5, 677-685 (2017); translation from Differ. Uravn. 53, No. 5, 684-692 (2017).
MSC:  35M12 35C10
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### Deflections of uniformly stressed reinforced plates with account for their weakened resistance to the transverse shear. (English. Russian original)Zbl 1464.74103

J. Appl. Mech. Tech. Phys. 58, No. 1, 173-181 (2017); translation from Prikl. Mekh. Tekh. Fiz. 58, No. 1, 199-209 (2017).
MSC:  74K20 74G35
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### Strictly dissipative nonuniqueness with corners. (English)Zbl 1377.35193

Colombini, Ferruccio (ed.) et al., Shocks, singularities and oscillations in nonlinear optics and fluid mechanics. Papers based on the workshop, Rome, Italy, September 2015. Cham: Springer (ISBN 978-3-319-52041-4/hbk; 978-3-319-52042-1/ebook). Springer INdAM Series 17, 141-149 (2017).
MSC:  35L50 35A01 35A02
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### Global convergence of a sticky particle method for the modified Camassa-Holm equation. (English)Zbl 1458.35117

MSC:  35C08 35D30 82C22
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### Erratum to: “A singular differential equation stemming from an optimal control problem in financial economics”. (English)Zbl 1418.34023

MSC:  34A12 91B26 49N90
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### The competing effects of wall transpiration and stretching on Homann stagnation-point flow. (English)Zbl 1408.76171

MSC:  76D05 76D10
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### Multiplicative form of the Lagrangian. (English. Russian original)Zbl 1383.37040

Theor. Math. Phys. 189, No. 3, 1693-1711 (2016); translation from Teor. Mat. Fiz. 189, No. 3, 335-354 (2016).
MSC:  37J05 70H03 70H05 83C10
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### Uniqueness and nonuniqueness of the solution to the problem of determining the source in the heat equation. (English. Russian original)Zbl 1362.35330

Comput. Math. Math. Phys. 56, No. 10, 1737-1742 (2016); translation from Zh. Vychisl. Mat. Mat. Fiz. 56, No. 10, 1754-1759 (2016).
MSC:  35R30 35K05 35A02
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### Mathematical analysis of a coarsening model with local interactions. (English)Zbl 1379.70046

MSC:  70F45 37L60 82C22
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### Nonuniqueness and multi-bump solutions in parabolic problems with the $$p$$-Laplacian. (English)Zbl 1332.35194

MSC:  35K92 35B09 35A02
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### Multiple solutions of two-dimensional and three-dimensional flows induced by a stretching flat surface. (English)Zbl 1440.76025

MSC:  76D05 76D10
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### The characteristic matrix of nonuniqueness for first-kind equations. (English)Zbl 1457.74067

Constanda, Christian (ed.) et al., Integral methods in science and engineering. Theoretical and computational advances. Papers based on the presentations at the international conference, IMSE, Karlsruhe, Germany, July 21–25, 2014. Cham: Birkhäuser/Springer. 111-117 (2015).
MSC:  74G30 74K20 45B05
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### New approach to the quantization of the Yang-Mills field. (English. Russian original)Zbl 1327.81266

Theor. Math. Phys. 183, No. 2, 585-596 (2015); translation from Teor. Mat. Fiz. 183, No. 2, 163-176 (2015).
MSC:  81T13 81T70
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### Nonuniqueness for the Dirichlet problem for fully nonlinear elliptic operators and the Ambrosetti-Prodi phenomenon. (English)Zbl 1319.35028

de Figueiredo, Djairo G. (ed.) et al., Analysis and topology in nonlinear differential equations. A tribute to Bernhard Ruf on the occasion of his 60th birthday. Selected papers based on the presentations at the IX workshop on nonlinear differential equations, João Pessoa, Brazil, September 2012. Cham: Birkhäuser/Springer (ISBN 978-3-319-04213-8/hbk; 978-3-319-04214-5/ebook). Progress in Nonlinear Differential Equations and Their Applications 85, 405-421 (2014).
MSC:  35J25 35B34 35P30
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MSC:  92D25
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### Counterexamples in inverse problems for parabolic, elliptic, and hyperbolic equations. (Russian, English)Zbl 1313.35368

Zh. Vychisl. Mat. Mat. Fiz. 54, No. 5, 779- 792 (2014); translation in Comput. Math. Math. Phys. 54, No. 5, 797-810 (2014).
MSC:  35R30
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### Experimental modeling of three-dimensional modes of hypersonic flow past cylindrically-blunted bodies. (English. Russian original)Zbl 1301.76004

Fluid Dyn. 49, No. 4, 428-437 (2014); translation from Izv. Ross. Akad. Nauk, Mekh. Zhidk. Gaza 2014, No. 4, 15-25 (2014).
MSC:  76-05 76K05
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### A reaction-diffusion system with nonlinear nonlocal boundary conditions. (English)Zbl 1302.35210

MSC:  35K57 35K61 35A02
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### Exact Riemann solutions to shallow water equations. (English)Zbl 1298.76047

MSC:  76B15 76H05 35L60
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### Nonuniqueness set and the problem of time-optimal motions in a velocity field. (English. Russian original)Zbl 1296.49026

Differ. Equ. 50, No. 3, 372-381 (2014); translation from Differ. Uravn. 50, No. 3, 376-384 (2014).
Reviewer: Walter Alt (Jena)
MSC:  49K15
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### Global Cauchy problem for wave equations with a nonlinear damping term. (English. Russian original)Zbl 1295.35300

Differ. Equ. 50, No. 1, 57-65 (2014); translation from Differ. Uravn. 50, No. 1, 58-65 (2014).
MSC:  35L15 35L71 35A02
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### Uniqueness and nonuniqueness of the Stokes and Oseen flows. (English)Zbl 1282.76096

MSC:  76D07 35E15 35Q30
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### Computing all sparse kinetic structures for a Lorenz system using optimization. (English)Zbl 1275.34068

MSC:  34C60 92C45 92E20
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### Criteria for nonuniqueness of Riemann solutions to compressible duct flows. (English)Zbl 1277.76091

MSC:  76N10 35A02 76M99
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### On the breakdown of the uniqueness of a solution of the Dirichlet problem for typeless differential equations of arbitrary even order in a disk. (English. Russian original)Zbl 1293.35374

J. Math. Sci., New York 190, No. 4, 539-566 (2013); translation from Ukr. Mat. Visn. 9, No. 4, 477-514 (2012).
MSC:  35R99
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MSC:  34K13
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MSC:  34K05
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### Analysis of ill-posedness and numerical methods of solving a nonlinear inverse problem in pharmacokinetics for the two-compartmental model with extravascular drug administration. (English)Zbl 1279.92008

MSC:  92-08 65P99 92C99
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### Nonuniqueness and singular radial solutions of systems of conservation laws. (English)Zbl 1265.35221

MSC:  35L67 35L65
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### On the nonuniqueness of reconstructing the right-hand sides of an elliptic equation. (English. Russian original)Zbl 1255.65201

Mosc. Univ. Comput. Math. Cybern. 36, No. 1, 50-52 (2012); translation from Vestn. Mosk. Univ., Ser. XV 2012, No. 1, 49-51 (2012).
MSC:  65N21 35J05 35R30
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### Outperforming the market portfolio with a given probability. (English)Zbl 1259.60072

Reviewer: Jan Obloj (Oxford)
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MSC:  53C44
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### On the boundary integral equation treatment of exterior acoustic problems. (English)Zbl 1291.76227

MSC:  76M15 76Q05
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### On well-posedness of semilinear parabolic and elliptic problems in the hyperbolic space. (English)Zbl 1241.35124

Reviewer: Long Wei (Jiangxi)
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MSC:  35K55
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### Equal-stress reinforcement the ring bending metal-composites plates working in conditions of steady creep. (Russian. English summary)Zbl 1449.74138

MSC:  74K20 74R20 74E30
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### Numerical approximation of real finite nonnegative function by the modulus of discrete Fourier transform. (English)Zbl 1213.65158

MSC:  65R20 65T50 45G10
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### Elastodynamic equations: characteristics, wavefronts and rays. (English)Zbl 1273.74148

MSC:  74J10 74B05
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### A one-dimensional nonlinear heat equation with a singular term. (English)Zbl 1192.35102

MSC:  35K58 35K20
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### Fictitious frequency revisited. (English)Zbl 1244.76033

MSC:  76M15 76Q05
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### Subsequences of zeros for classes of holomorphic functions, their stability, and the entropy of arcwise connectedness. II. (English. Russian original)Zbl 1206.30075

St. Petersbg. Math. J. 20, No. 1, 131-162 (2009); translation from Algebra Anal. 20, No. 1, 190-236 (2008).
MSC:  30H05
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### Subsequences of zeros for classes of holomorphic functions, their stability, and the entropy of arcwise connectedness. I. (English. Russian original)Zbl 1206.30074

St. Petersbg. Math. J. 20, No. 1, 101-129 (2009); translation from Algebra Anal. 20, No. 1, 146-189 (2008).
MSC:  30H05
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### Nonuniqueness of solutions for Dirichlet problems related to fully nonlinear singular or degenerate operators. (English)Zbl 1196.35088

MSC:  35J60 35J25 35J70

### The logarithmic skew-normal distributions are moment-indeterminate. (English)Zbl 1175.60013

MSC:  60E05 44A60
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### Nonuniqueness of the traveling wave speed for harmonic heat flow. (English)Zbl 1182.35071

MSC:  35C07 35K58 35A02
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### The nonuniqueness of solutions to elliptic equations for probability measures. (English. Russian original)Zbl 1172.35084

Dokl. Math. 77, No. 3, 401-403 (2008); translation from Dokl. Akad. Nauk, Ross. Akad. Nauk 420, No. 3, 320-323 (2008).
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### Recent general solutions in linear elasticity and their applications. (English)Zbl 1146.74306

MSC:  74B05 74G05 74-02
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