Benenti, Sergio On the orthogonality of the second class coordinates in the separation of the Hamilton-Jacobi equation. (English) Zbl 0803.53019 Atti Accad. Sci. Torino, Cl. Sci. Fis. Mat. Nat. 123, No. 5-6, 167-171 (1989). Reviewer: Valeriy A. Yumaguzhin (Pereslavl’-Zalesskiy) MSC: 53B30 35F20 PDFBibTeX XMLCite \textit{S. Benenti}, Atti Accad. Sci. Torino, Cl. Sci. Fis. Mat. Nat. 123, No. 5--6, 167--171 (1989; Zbl 0803.53019)
Gorokh, V. P. Minimal surfaces of constant Gaussian curvature in a pseudo-Riemannian sphere. (English. Russian original) Zbl 0741.53041 J. Sov. Math. 59, No. 2, 709-714 (1992); translation from Ukr. Geom. Sb. 32, 27-34 (1989). MSC: 53C42 PDFBibTeX XMLCite \textit{V. P. Gorokh}, J. Sov. Math. 59, No. 2, 709--714 (1989; Zbl 0741.53041); translation from Ukr. Geom. Sb. 32, 27--34 (1989) Full Text: DOI
Deszcz, R.; Hotlos, M. On conformally related four-dimensional pseudo-symmetric metrics. (English) Zbl 0791.53022 Rend. Semin. Fac. Sci. Univ. Cagliari 59, No. 2, 165-175 (1989). Reviewer: A.Bucki (Williamsport) MSC: 53B20 PDFBibTeX XMLCite \textit{R. Deszcz} and \textit{M. Hotlos}, Rend. Semin. Fac. Sci. Univ. Cagliari 59, No. 2, 165--175 (1989; Zbl 0791.53022)
Lawson, H. Blaine jun.; Michelsohn, Marie-Louise Spin geometry. (English) Zbl 0688.57001 Princeton Mathematical Series. 38. Princeton, NJ: Princeton University Press. xii, 427 p. $ 55.00 (1989). Reviewer: K.H.Mayer MSC: 57-02 57R15 53C20 58-02 57R20 57R42 57R22 58J32 58J20 15A66 58D17 PDFBibTeX XMLCite \textit{H. B. Lawson jun.} and \textit{M.-L. Michelsohn}, Spin geometry. Princeton, NJ: Princeton University Press (1989; Zbl 0688.57001)
Gilkey, Peter B. The geometry of spherical space form groups. (English) Zbl 0789.57001 Series in Pure Mathematics. 7. Singapore: World Scientific. 361 p. (1989). Reviewer: L. Maxim-Răileanu (Iaşi) MSC: 57-02 57S25 57R57 58J35 57R85 58J20 58J28 PDFBibTeX XMLCite \textit{P. B. Gilkey}, The geometry of spherical space form groups. Singapore: World Scientific (1989; Zbl 0789.57001)
Wang, Tixiang A minimax principle without differentiability. (English) Zbl 0729.58022 J. Nanjing Univ., Math. Biq. 6, No. 2, 46-52 (1989). MSC: 58E05 58B20 PDFBibTeX XMLCite \textit{T. Wang}, J. Nanjing Univ., Math. Biq. 6, No. 2, 46--52 (1989; Zbl 0729.58022)
Monteiro Marques, Manuel Externally induced dissipative collisions. (English) Zbl 0724.70013 Mathematical models for phase change problems, Proc. Eur. Workshop, Óbidos/Port. 1988, ISNM, Int. Ser. Numer. Math. 88, 301-312 (1989). Reviewer: M.Gousidou-Koutita (Thessaloniki) MSC: 70F35 70G45 37J99 PDFBibTeX XML
Gorokh, V. P. On minimal surfaces of constant Gaussian curvature in a pseudo-Riemannian sphere. (Russian) Zbl 0714.53037 Ukr. Geom. Sb. 32, 27-34 (1989). Reviewer: Z.Jankovský MSC: 53C42 PDFBibTeX XMLCite \textit{V. P. Gorokh}, Ukr. Geom. Sb. 32, 27--34 (1989; Zbl 0714.53037)
Chen, Bang-Yen; Song, Hongzao Null 2-type surfaces in Minkowski space-time. (English) Zbl 0714.53036 Algebras Groups Geom. 6, No. 3, 333-352 (1989). Reviewer: L.Verstraelen MSC: 53C40 53B25 58J50 PDFBibTeX XMLCite \textit{B.-Y. Chen} and \textit{H. Song}, Algebras Groups Geom. 6, No. 3, 333--352 (1989; Zbl 0714.53036)
Donato, Santi Exterior concurrent vector fields on a pseudo-Riemannian manifold endowed with a D-contact structure. (English) Zbl 0713.53031 Riv. Mat. Univ. Parma, IV. Ser. 15, 191-198 (1989). Reviewer: R.Roşca MSC: 53C40 53C15 PDFBibTeX XMLCite \textit{S. Donato}, Riv. Mat. Univ. Parma, IV. Ser. 15, 191--198 (1989; Zbl 0713.53031)
Oproiu, V.; Papaghiuc, N. The Legendre transformation and a pseudo-Riemannian metric. (English) Zbl 0709.53015 An. Sţiinţ. Univ. Al. I. Cuza Iaşi, Ser. Nouă, Mat. 35, No. 1, 69-76 (1989). Reviewer: N.L.Youssef MSC: 53B40 53B30 PDFBibTeX XML
Chen, Xianping Pseudo-umbilical submanifolds in spaces of constant curvature. (Chinese. English summary) Zbl 0708.53044 J. East China Norm. Univ., Nat. Sci. Ed. 1989, No. 1, 59-65 (1989). Reviewer: Shen Yi-Bing MSC: 53C40 53C42 PDFBibTeX XMLCite \textit{X. Chen}, J. East China Norm. Univ., Nat. Sci. Ed. 1989, No. 1, 59--65 (1989; Zbl 0708.53044)
Deszcz, Ryszard On Ricci-pseudo-symmetric warped products. (English) Zbl 0707.53020 Demonstr. Math. 22, No. 4, 1053-1065 (1989). Reviewer: M.Hotloś MSC: 53B20 PDFBibTeX XMLCite \textit{R. Deszcz}, Demonstr. Math. 22, No. 4, 1053--1065 (1989; Zbl 0707.53020) Full Text: DOI
Deszcz, Ryszard; Grycak, Wiesław On manifolds satisying some curvature conditions. (English) Zbl 0698.53011 Colloq. Math. 57, No. 1, 89-92 (1989). Reviewer: M.Hotloś MSC: 53B20 PDFBibTeX XMLCite \textit{R. Deszcz} and \textit{W. Grycak}, Colloq. Math. 57, No. 1, 89--92 (1989; Zbl 0698.53011) Full Text: DOI
Podesta, Fabio Projective hyperbolicity. (English) Zbl 0697.53022 Q. J. Math., Oxf. II. Ser. 40, No. 159, 325-331 (1989). Reviewer: M.Modugno MSC: 53B10 53B05 PDFBibTeX XMLCite \textit{F. Podesta}, Q. J. Math., Oxf. II. Ser. 40, No. 159, 325--331 (1989; Zbl 0697.53022) Full Text: DOI
Deszcz, Ryszard; Hotloś, Marian Notes on pseudo-symmetric manifolds admitting special geodesic mappings. (English) Zbl 0696.53014 Soochow J. Math. 15, No. 1, 19-27 (1989). Reviewer: V.Cruceanu MSC: 53B20 53C22 PDFBibTeX XMLCite \textit{R. Deszcz} and \textit{M. Hotloś}, Soochow J. Math. 15, No. 1, 19--27 (1989; Zbl 0696.53014)
Li, Shijie On three-dimensional pseudo-umbilical isotropic submanifolds. (English) Zbl 0695.53016 Demonstr. Math. 22, No. 3, 823-837 (1989). Reviewer: B.Y.Chen MSC: 53B25 PDFBibTeX XMLCite \textit{S. Li}, Demonstr. Math. 22, No. 3, 823--837 (1989; Zbl 0695.53016) Full Text: DOI
Zelditch, Steven The averaging method and ergodic theory for pseudo-differential operators on compact hyperbolic surfaces. (English) Zbl 0693.58025 J. Funct. Anal. 82, No. 1, 38-68 (1989). Reviewer: J.Marschall MSC: 58J40 35S99 37A99 PDFBibTeX XMLCite \textit{S. Zelditch}, J. Funct. Anal. 82, No. 1, 38--68 (1989; Zbl 0693.58025) Full Text: DOI
Duggal, K. L. Lorentzian geometry of CR submanifolds. (English) Zbl 0692.53025 Acta Appl. Math. 17, No. 2, 171-193 (1989). Reviewer: D.Allison MSC: 53C50 53C55 53C80 83C50 PDFBibTeX XMLCite \textit{K. L. Duggal}, Acta Appl. Math. 17, No. 2, 171--193 (1989; Zbl 0692.53025) Full Text: DOI
Chaki, M. C.; De, U. C. On pseudo symmetric spaces. (English) Zbl 0691.53011 Acta Math. Hung. 54, No. 3-4, 185-190 (1989). Reviewer: O.P.Singh MSC: 53B20 PDFBibTeX XMLCite \textit{M. C. Chaki} and \textit{U. C. De}, Acta Math. Hung. 54, No. 3--4, 185--190 (1989; Zbl 0691.53011) Full Text: DOI
Kozlov, S. E. Estimates of the areas of spherical images of two-dimensional surfaces in Riemannian manifolds. (Russian) Zbl 0687.53018 Mat. Zametki 46, No. 3, 120-122 (1989). Reviewer: S.Hineva MSC: 53B25 53C40 PDFBibTeX XMLCite \textit{S. E. Kozlov}, Mat. Zametki 46, No. 3, 120--122 (1989; Zbl 0687.53018)
Karger, Adolf Curvature properties of 6-parametric robot manipulators. (English) Zbl 0687.53012 Manuscr. Math. 65, No. 3, 311-328 (1989). Reviewer: J.Hoschek MSC: 53A17 PDFBibTeX XMLCite \textit{A. Karger}, Manuscr. Math. 65, No. 3, 311--328 (1989; Zbl 0687.53012) Full Text: DOI EuDML
Faye, Farba; Fedida, Edmond; Seydi, Hamet Structures pseudo-riemanniennes sur les variétés compactes et simplement connexes de dimension 3. (Pseudo-Riemannian structures on compact simply connected manifolds of dimension 3). (French) Zbl 0684.53048 J. Niger. Math. Soc. 5(1989), 79-85 (1986). Reviewer: A.Borisov MSC: 53C50 PDFBibTeX XMLCite \textit{F. Faye} et al., J. Niger. Math. Soc. 5, 79--85 (1989; Zbl 0684.53048)
Furness, P. M. D.; Fedida, E. Sur les structures pseudo-riemanniennes plates des variétés compactes. (On flat pseudo-Riemannian structures on compact manifolds). (French) Zbl 0684.53047 J. Niger. Math. Soc. 5(1989), 63-78 (1986). Reviewer: A.Borisov MSC: 53C50 53C20 PDFBibTeX XMLCite \textit{P. M. D. Furness} and \textit{E. Fedida}, J. Niger. Math. Soc. 5, 63--78 (1989; Zbl 0684.53047)
Okassa, Eugène Relèvements des structures symplectiques et pseudo-riemanniennes à des variétés de points proches. (Prolongations of symplectic and pseudo-Riemannian structures to manifolds of infinitely near points). (French) Zbl 0684.53035 Nagoya Math. J. 115, 63-71 (1989). Reviewer: M.de Leon MSC: 53C15 53B30 58A20 PDFBibTeX XMLCite \textit{E. Okassa}, Nagoya Math. J. 115, 63--71 (1989; Zbl 0684.53035) Full Text: DOI
Pavlov, E. V. Pointwise CH-transformations. (English. Russian original) Zbl 0684.53021 Sov. Math. 33, No. 1, 91-98 (1989); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1989, No. 1(320), 79-86 (1989). Reviewer: W.Kaiser MSC: 53B35 PDFBibTeX XMLCite \textit{E. V. Pavlov}, Sov. Math. 33, No. 1, 91--98 (1989; Zbl 0684.53021); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1989, No. 1(320), 79--86 (1989)
Perjés, Zoltán Unitary spinor methods in general relativity. (English) Zbl 0684.53018 Mathematical Relativity, Proc. Conf., Canberra/Aust. 1988, Proc. Cent. Math. Anal. Aust. Natl. Univ. 19, 207-221 (1989). Reviewer: J.D.Zund MSC: 53C27 83C99 53-02 PDFBibTeX XML
Bejan, Cornelia A classification of the almost parahermitian manifolds. (English) Zbl 0683.53034 Differential geometry and its applications, Proc. Conf., Dubrovnik/Yugosl. 1988, 23-27 (1989). Reviewer: V.Cruceanu MSC: 53C15 PDFBibTeX XML
Labourie, François Immersions isométriques elliptiques et courbes pseudo-holomorphes. (Elliptic isometric immersions and pseudo-holomorphic curves). (French) Zbl 0682.53063 J. Differ. Geom. 30, No. 2, 395-424 (1989). Reviewer: H.Reckziegel MSC: 53C40 53C45 53C55 PDFBibTeX XMLCite \textit{F. Labourie}, J. Differ. Geom. 30, No. 2, 395--424 (1989; Zbl 0682.53063) Full Text: DOI
Rozenfel’d, B. A.; Burtseva, T. A.; Dushina, N. V.; Kostrikina, L. P.; Malyutin, V. V.; Yukhtina, T. I. Curvature tensors of Hermitian elliptic spaces. (Russian) Zbl 0682.53053 Zb. Rad. Filoz. Fak. Nišu, Ser. Mat. 3, 83-98 (1989). Reviewer: G.Stanilov MSC: 53C35 53B30 53C15 PDFBibTeX XMLCite \textit{B. A. Rozenfel'd} et al., Zb. Rad. Filoz. Fak. Nišu, Ser. Mat. 3, 83--98 (1989; Zbl 0682.53053)
Müller, Detlef Isometries of bi-invariant pseudo-Riemannian metrics on Lie groups. (English) Zbl 0681.53027 Geom. Dedicata 29, No. 1, 65-96 (1989). Reviewer: A.L.Onishchik MSC: 53C30 53C50 PDFBibTeX XMLCite \textit{D. Müller}, Geom. Dedicata 29, No. 1, 65--96 (1989; Zbl 0681.53027) Full Text: DOI
Kim, Young Ho Surfaces in a pseudo-Euclidean space with planar normal sections. (English) Zbl 0678.53050 J. Geom. 35, No. 1-2, 120-131 (1989). Reviewer: Bang-yen Chen (East Lansing) MSC: 53C40 53B30 PDFBibTeX XMLCite \textit{Y. H. Kim}, J. Geom. 35, No. 1--2, 120--131 (1989; Zbl 0678.53050) Full Text: DOI
Deprez, J.; Deszcz, R.; Verstraelen, L. Examples of pseudo-symmetric conformally flat warped products. (English) Zbl 0678.53022 Chin. J. Math. 17, No. 1, 51-65 (1989). Reviewer: M.Hotlos MSC: 53B20 PDFBibTeX XMLCite \textit{J. Deprez} et al., Chin. J. Math. 17, No. 1, 51--65 (1989; Zbl 0678.53022)
Ledger, A. J.; Toomanian, M. Complete lifts of \(\Sigma\)-spaces. (English) Zbl 0676.53056 Math. Nachr. 141, 275-282 (1989). Reviewer: O.Kowalski MSC: 53C30 53C20 PDFBibTeX XMLCite \textit{A. J. Ledger} and \textit{M. Toomanian}, Math. Nachr. 141, 275--282 (1989; Zbl 0676.53056) Full Text: DOI
Chaki, M. C.; Saha, S. K. On pseudo projective symmetric manifolds. (English) Zbl 0676.53023 Bull. Inst. Math., Acad. Sin. 17, No. 1, 59-65 (1989). Reviewer: V.Boju MSC: 53B20 53B10 PDFBibTeX XMLCite \textit{M. C. Chaki} and \textit{S. K. Saha}, Bull. Inst. Math., Acad. Sin. 17, No. 1, 59--65 (1989; Zbl 0676.53023)
Nakanishi, Yasuo On curves in pseudo-Riemannian submanifolds. (English) Zbl 0675.53021 Yokohama Math. J. 36, No. 2, 137-146 (1989). Reviewer: N.Soare MSC: 53B30 53A04 PDFBibTeX XMLCite \textit{Y. Nakanishi}, Yokohama Math. J. 36, No. 2, 137--146 (1989; Zbl 0675.53021)
LeBrun, Claude Quaternionic-Kähler manifolds and conformal geometry. (English) Zbl 0674.53036 Math. Ann. 284, No. 3, 353-376 (1989). Reviewer: N.Bokan MSC: 53B35 53C55 PDFBibTeX XMLCite \textit{C. LeBrun}, Math. Ann. 284, No. 3, 353--376 (1989; Zbl 0674.53036) Full Text: DOI EuDML
Kobayashi, Toshiyuki Proper action on a homogeneous space of reductive type. (English) Zbl 0662.22008 Math. Ann. 285, No. 2, 249-263 (1989). Reviewer: Toshiyuki Kobayashi (Tokyo) MSC: 22E40 53C30 43A85 53C35 PDFBibTeX XMLCite \textit{T. Kobayashi}, Math. Ann. 285, No. 2, 249--263 (1989; Zbl 0662.22008) Full Text: DOI EuDML
Houh, Chorng Shi Null 2-type surfaces in \(E^ 3_ 1\) and in \(S^ 3_ 1\). (English) Zbl 0736.53051 Algebra, analysis, and geometry, Proc. Symp. in Honor of Chen-Jung Hsu and Kung-Sing Shih, Taipei/Taiwan 1988, 19-37 (1989). Reviewer: C.Apreutesei (Iaşi) MSC: 53C40 53A10 53A35 PDFBibTeX XMLCite \textit{C. S. Houh}, in: Null \(2\)-type surfaces in Euclidean space. . 19--37 (1989; Zbl 0736.53051)
Deszcz, Ryszard Notes on totally umbilical submanifolds. (English) Zbl 0735.53042 Geometry and topology of submanifolds, Proc. Meet., Marseille/Fr. 1987, 89-97 (1989). Reviewer: L.Ornea (Bucureşti) MSC: 53C40 PDFBibTeX XMLCite \textit{R. Deszcz}, in: Nonnegatively curved hypersurfaces in hyperbolic space. . 89--97 (1989; Zbl 0735.53042)