Found 168 Documents (Results 1–100)
Lagrangian and Clairaut anti-invariant semi-Riemannian submersions in para-Kaehler geometry. (English) Zbl 07905415
Degree of approximation by multiple sigmoids Kantorovich-Choquet quasi-interpolation neural network operators. (English) Zbl 1524.41022
Notes on totally geodesic foliations of a complete semi-Riemannian manifold. (English) Zbl 1520.53019
Reviewer: Paweł Walczak (Łódź)
Symmetric spaces rolling on flat spaces. (English) Zbl 1511.53057
Reviewer: Jacques Faraut (Paris)
Study on warped product of screen real lightlike submanifolds of a golden semi-Riemannian manifold. (English) Zbl 1519.53048
Reviewer: Mircea Crâşmăreanu (Iaşi)
A note on semi-slant lightlike submanifolds of an indefinite Kenmotsu manifold. (English) Zbl 07854355
Geometry of semi-Riemannian group manifold and its applications in spacetime admitting Ricci solitons. (English) Zbl 07838314
Pointwise \(\mathcal{PR}\)-pseudo slant submanifolds of para-Kähler manifolds. (English) Zbl 1524.53041
Screen pseudo slant lightlike submanifolds of a metallic semi-Riemannian manifold. (English) Zbl 1499.53168
Semi-invariant lightlike submanifolds of a metallic semi-Riemannian manifold. (English) Zbl 1473.53052
Screen pseudo slant lightlike submanifolds of golden semi-Riemannian manifolds. (English) Zbl 1488.53082
Pseudo Cauchy Riemann and framed manifolds with physical applications. (English) Zbl 1460.53057
Reviewer: Mircea Crâşmăreanu (Iaşi)
On some types of lightlike submanifolds of golden semi-Riemannian manifolds. (English) Zbl 1499.53146
Radical transversal SCR-lightlike submanifolds of indefinite Kähler manifolds. (Radical transversal SCR-lightlike submanifolds of indefinite Kaehler manifolds.) (English) Zbl 1474.53186
Non-degenerate hypersurfaces of semi-Riemannian manifold with quarter-symmetric metric connection. (Chinese. English summary) Zbl 1449.53039
Doppler shift in semi-Riemannian signature and the non-uniqueness of the Krein space of spinors. (English) Zbl 1423.83037
Not every conjugate point of a semi-Riemannian geodesic is a bifurcation point. (English) Zbl 1463.58006
Para-contact product semi-Riemannian submersions. (English) Zbl 1394.53036
Reviewer: Nabil L. Youssef (Giza)
Periodic trajectories of dynamical systems having a one-parameter group of symmetries. (English) Zbl 1387.53044
Haesen, Stefan (ed.) et al., Topics in modern differential geometry. Amsterdam: Atlantis Press (ISBN 978-94-6239-239-7/hbk; 978-94-6239-240-3/ebook). Atlantis Transactions in Geometry 1, 21-36 (2017).
Characterizations of complete linear Weingarten spacelike submanifolds in a locally symmetric semi-Riemannian manifold. (English) Zbl 1381.53099
Minkowski space. The spacetime of special relativity. (English) Zbl 1372.83001
De Gruyter Studies in Mathematical Physics 40. Berlin: De Gruyter (ISBN 978-3-11-048457-1/hbk; 978-3-11-048573-8/ebook). vi, 122 p. (2017).
Reviewer: Hans-Jürgen Schmidt (Potsdam)
Radical transversal screen pseudo-slant lightlike submanifolds of indefinite Sasakian manifolds. (English) Zbl 1488.53116
Screen pseudo-slant lightlike submanifolds of indefinite Kähler manifolds. (Screen pseudo-slant lightlike submanifolds of indefinite Kaehler manifolds.) (English) Zbl 1474.53176
Almost para-Hermitian submersions. (English) Zbl 1474.53150
MSC:
53C15
Radical transversal screen semi-slant lightlike submanifolds of indefinite Kähler manifolds. (Radical transversal screen semi-slant lightlike submanifolds of indefinite Kaehler manifolds.) (English) Zbl 1474.53175
Half lightlike submanifolds of a semi-Riemannian manifold of quasi-constant curvature. (English) Zbl 1474.53230
A class of complete hypersurfaces immersed in semi-Riemannian warped product spaces. (English) Zbl 1374.53093
MSC:
53C42
A harmonic endomorphism in a semi-Riemannian context. (English) Zbl 1401.53021
Mladenov, Ivaïlo M. (ed.) et al., Proceedings of the 17th international conference on geometry, integrability and quantization, Sts. Constantine and Elena (near Varna), Bulgaria, June 5–10, 2015. Sofia: Avangard Prima. Geometry, Integrability and Quantization, 172-181 (2016).
Reviewer: Eduardo Hulett (Cordoba)
Screen pseudo-slant lightlike submanifolds of indefinite Sasakian manifolds. (English) Zbl 1338.53038
Generalized horizontally weakly conformal submersion between semi-Riemannian manifold. (English) Zbl 1335.53029
Lightlike submanifolds of a semi-Riemannian manifold with a semi-symmetric non-metric connection. (English) Zbl 1337.53072
Radical transversal screen pseudo-slant light-like submanifolds of indefinite Kaehler manifolds. (English) Zbl 1335.53027
Radical transversal screen semi-slant lightlike submanifolds of indefinite Sasakian manifolds. (English) Zbl 1325.53031
Index of pseudo-projectively-symmetric semi-Riemannian manifolds. (English) Zbl 1323.53011
MSC:
53B05
On contact normal parallel spacelike submanifolds in a semi-Riemannian Sasakian space form. (English) Zbl 07835231
A characterization theorem for lightlike hypersurfaces of semi-Riemannian manifolds of quasi-constant curvatures. (English) Zbl 1328.53022
Radical transversal lightlike submanifolds of indefinite para-Sasakian manifolds. (English) Zbl 1310.53051
GCR-lightlike submanifolds of a semi-Riemannian product manifold. (English) Zbl 1301.53015
Reviewer: Radu Iordănescu (Bucureşti)
On the Alexandrov topology of sub-Lorentzian manifolds. (English) Zbl 1294.53034
Stefani, Gianna (ed.) et al., Geometric control theory and sub-Riemannian geometry. Proceedings of the meeting on geometric control theory and sub-Riemannian geometry, dedicated to Andrei A. Agrachev on the occasion of his 60th birthday, Cortona, Italy, May 21–25, 2012. Cham: Springer (ISBN 978-3-319-02131-7/hbk; 978-3-319-02132-4/ebook). Springer INdAM Series 5, 287-311 (2014).
The \(\eta \)-Einstein condition on indefinite \(\mathcal S\)-manifolds. (English) Zbl 1349.53052
Reviewer: Anna Maria Pastore (Bari)
Non-tangential half lightlike submanifolds of semi-Riemannian manifolds with semi-symmetric non-metric connections. (English) Zbl 1287.53046
The Reilly’s integral formula on semi-Riemannian manifolds with nondegenerate boundary. (English) Zbl 1413.53124
On the classification of Lorentzian Sasaki space forms. (English) Zbl 1340.53096
Reviewer: Neda Bokan (Beograd)
Slant submanifolds of semi-Riemannian manifolds. (English) Zbl 1300.53065
Reviewer: Stefka Hineva (Sofia)
Principal torus bundles of Lorentzian \(\mathcal S\)-manifolds and the \(\varphi\)-null Osserman condition. (English) Zbl 1282.53060
Reviewer: Marco Modugno (Firenze)
A semi-Riemannian manifold of quasi-constant curvature admits some half lightlike submanifolds. (English) Zbl 1270.53052
A classification of half lightlike submanifolds of a semi-Riemannian manifold with a semi-symmetric non-metric connection. (English) Zbl 1270.53053
Paracontact semi-Riemannian submersions. (English) Zbl 1286.53036
Reviewer: Ünver Çiftçi (Tekirdağ)
The curvature of half lightlike submanifolds of a semi-Riemannian manifold of quasi-constant curvature. (English) Zbl 1271.53019
Lightlike submanifolds of a semi-Riemannian manifold with a semi-symmetric non-metric connection. (English) Zbl 1277.53050
Reviewer: Gabriel Teodor Pripoae (Bucureşti)
Rigidity theorem for complete spacelike submanifold in \(S^{n+p}_q(1)\) with constant scalar curvature. (English) Zbl 1262.53052
Reviewer: Ivan Izmestiev (Berlin)
Lightlike hypersurfaces of a semi-Riemannian manifold of quasi-constant curvature. (English) Zbl 1254.53031
Harmonic vector fields. Variational principles and differential geometry. (English) Zbl 1245.53002
Amsterdam: Elsevier (ISBN 978-0-12-415826-9/hbk). xiv, 508 p. (2012).
Reviewer: Alessandro De Paris (Napoli)
Screen Cauchy-Riemann lightlike submanifolds of semi-Riemannian product manifolds. (English) Zbl 1308.53085
Nonholonomic semi-Riemannian geometry with examples on \(H\)-type groups. (English) Zbl 1258.53031
Cardoso, João (ed.) et al., Mathematical papers in honour of Fátima Silva Leite. Selected papers based on the presentations at the special session on geometric control theory – a tribute to Fátima Silva Leite on the occasion of her 60th anniversary, held at the 9th Portuguese conference on automatic control, CONTROLO’2010, Coimbra, Portugal, September 8–10, 2010. Coimbra: Universidade de Coimbra, Departamento de Matemática (ISBN 978-972-8564-47-6/pbk). Textos de Matemática. Série B 43, 43-56 (2011).
Reviewer: Jeremy Tyson (Urbana)
On quasi-generalized recurrent manifolds. (English) Zbl 1240.53024
Reviewer: Vladimir Y. Rovenskij (Nesher)
Schwarzschild spacetime without coordinates. (English) Zbl 1239.53089
Reviewer: Adrian Sandovici (Piatra Neamt)
Curvature flows and CMC hypersurfaces. (English) Zbl 1211.53085
Ji, Lizhen (ed.) et al., Handbook of geometric analysis. No. 3. Somerville, MA: International Press; Beijing: Higher Education Press (ISBN 978-1-57146-205-3/hbk). Advanced Lectures in Mathematics (ALM) 14, 77-127 (2010).
Reviewer: Gheorghe Pitiş (Braşov)
Paraquaternionic CR-submanifolds of paraquaternionic Kähler manifolds and semi-Riemannian submersions. (English) Zbl 1202.53054
Real half lightlike submanifolds with totally umbilical properties. (English) Zbl 1195.53068
Reviewer: Zbigniew Olszak (Wrocław)
On Joachimsthal’s theorems in semi-Euclidean spaces. (English) Zbl 1176.53014
Reviewer: Kazim Ilarslan (Kirikkale)
Imaginary Killing spinors on \((2, n - 2)\)-manifolds. (English) Zbl 1175.53062
Reviewer: Andrzej Szczepański (Gdańsk)
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