Results 1 to 10 of about 245 (73)

Navigation problem and conformal vector fields [PDF]

open access: yesAUT Journal of Mathematics and Computing, 2021
The navigation technique is very effective to obtain or classify a Finsler metric from a given a Finsler metric (especially a Riemannian metric) under an action of a vector field on a differential manifold.
Qiaoling Xia
doaj   +1 more source

On 4-dimensional Einsteinian manifolds with parallel null distribution [PDF]

open access: yesریاضی و جامعه, 2023
In this paper, we investigate the Einsteinian manifolds with parallel null distribution. For this purpose, we first obtain the equations, which are known as Einstein's equations, that lead to finding the mentioned manifolds and then, we reduce Einstein's
Mehdi Jafari
doaj   +1 more source

Hyperbolic Gradient-Bourgoignon Flow

open access: yesپژوهش‌های ریاضی, 2022
Introduction ‎Ricci solitons as a generalization of Einstein manifolds introduced by Hamilton in mid 1980s‎. ‎In the last two decades‎, ‎a lot of researchers have been done on Ricci solitons‎.
Hamed Faraji   +2 more
doaj  

R-Mixup: Riemannian Mixup for Biological Networks. [PDF]

open access: yesKDD, 2023
Kan X   +8 more
europepmc   +1 more source

Multiscale SPD manifold learning for rehabilitation exercise evaluation. [PDF]

open access: yesSci Rep
Bai Z   +6 more
europepmc   +1 more source

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