Results 11 to 20 of about 48 (48)
Почти ермитови структури, туисторни пространства и хармонични изображения
, 2022 [Davidov Johann; Давидов Йохан]In the first part of the paper, we review the notion of an almost-complex structure and some topological obstructions for existence of such a structure.
Davidov, Johann
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HOMOTOPY CLASSES WITH SMALL JACOBIANS [PDF]
, 2015 If the infimum of the conformal k-Jacobian on the homotopy class of a map between compact Riemannian manifolds vanishes then the map factors rationally through the k-skeleton of the target manifold.
Bechtluft-Sachs, Stefan +1 more
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The Stekloff Problem for Rotationally Invariant Metrics on the Ball [PDF]
, 2013 . Let (Br, g) be a ball of radius r > 0 in R n (n ≥ 2) endowed with a rotationally invariant metric ds 2 + f 2 (s)dw 2 , where dw 2 represents the standard metric on S n−1 , the (n−1)-dimensional unit sphere.
El Problema De Stekloff +2 more
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Harmonic proper almost complex structures on Walker 4-manifolds
, 2014 Every Walker 4-manifold M, endowed with a canonical neutral metric, admits a specific almost complex structure called proper. In this note we find the conditions under which a proper almost complex structure is harmonic in the sense of C.
Ul Haq, Absar +2 more
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Хармонични собствени почти комплексни структури върху 4-многообразия на Уокър
, 2014 [Davidov Johann; Давидов Йохан]; [Ul Haq Absar; Ул Хак Абсар]; [Mushkarov Oleg; Muškarov Oleg; Мушкаров Олег]Every Walker 4-manifold M, endowed with a canonical neutral metric, admits a specific almost complex structure called proper.
Ul Haq, Absar +2 more
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© Hindawi Publishing Corp. HARMONICITY OF HORIZONTALLY CONFORMAL MAPS AND SPECTRUM OF THE LAPLACIAN
, 2001 We discuss the harmonicity of horizontally conformal maps and their relations with the spectrum of the Laplacian. We prove that if φ: M → N is a horizontally conformal map such that the tension field is divergence free, then φ is harmonic.
Gabjin Yun
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Infima, Factorization and Stability for Natural Energy Functionals
, 2003 We consider the infima Ẽ(f) on homotopy classes of energy functionals E defined on smooth maps f: Mm → Xk between compact connected Riemannian manifolds.
Bechtluft-Sachs, S +1 more
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On p-harmonic self-maps of spheres. [PDF]
Calc Var Partial Differ Equ, 2023 Branding V, Siffert A.
europepmc +1 more source
On Finite Energy Solutions of 4-harmonic and ES-4-harmonic Maps. [PDF]
J Geom Anal, 2021 Branding V.
europepmc +1 more source
Polyharmonic hypersurfaces into pseudo-Riemannian space forms. [PDF]
Ann Mat Pura Appl, 2023 Branding V +3 more
europepmc +1 more source