Results 101 to 110 of about 10,692 (245)
Semi-slant Riemannian maps into almost Hermitian manifolds [PDF]
, 2014 summary:We introduce semi-slant Riemannian maps from Riemannian manifolds to almost Hermitian manifolds as a generalization of semi-slant immersions, invariant Riemannian maps, anti-invariant Riemannian maps and slant Riemannian maps.
Park, Kwang-Soon, Şahin, Bayram
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Seiberg-Witten Equations on Pseudo-Riemannian Spinc Manifolds With Neutral Signature
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2012 Pseudo-Riemannian spinc manifolds were introduced by Ikemakhen in [7]. In the present work we consider pseudo-Riemannian 4-manifolds with neutral signature whose structure groups are SO+(2; 2).
Değirmenci Nedim, Karapazar Şenay
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Bulletin of the London Mathematical Society, Volume 58, Issue 6, June 2026.Abstract Given r⩾3$r \geqslant 3$, we prove that there exists λ>0$\lambda >0$ depending only on r$r$ so that if G$G$ is a metric graph of rank r$r$ with metric entropy 1, then there exists a proper subgraph H$H$ of G$G$ with metric entropy at least λ$\lambda$. This answers a question of the second two authors together with Rieck. We interpret this as a
Tawfiq Hamed, Tarik Aougab, Matt Clay
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Biharmonic Riemannian submersions from a 3-dimensional BCV space
, 2023 BCV spaces are a family of 3-dimensional Riemannian manifolds which include six of Thurston's eight geometries. In this paper, we give a complete classification of proper biharmonic Riemannian submersions from a 3-dimensional BCV space by proving that ...
Ou, Ye-Lin, Wang, Ze-Ping
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IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingFew-shot remote sensing image scene classification aims to use annotated data to achieve efficient classification, which has important applications in environmental monitoring, urban planning, agricultural yield estimation, and other fields. However, due
Xiliang Chen +5 more
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On the tightness of left‐invariant contact structures
Bulletin of the London Mathematical Society, Volume 58, Issue 6, June 2026.Abstract We prove that all left‐invariant contact structures on three‐dimensional Lie groups are tight. The argument is based on Riemannian methods and establishes a unique factorization property for any Lie group admitting a left‐invariant contact structure, other than SU(2)$\mathrm{SU}(2)$. We then make use of such factorization property to construct
Eugenio Bellini
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Cohomogeneity‐one solitons in Laplacian flow: Local, smoothly‐closing and steady solitons
Journal of the London Mathematical Society, Volume 113, Issue 6, June 2026.Abstract We initiate a systematic study of cohomogeneity‐one solitons in Bryant's Laplacian flow of closed G2$\text{G}_2$‐structures on a 7‐manifold, motivated by the problem of understanding finite‐time singularities of that flow. Here, we focus on solitons with symmetry groups Sp(2)${\rm Sp}(2)$ and SU(3)${\rm SU}(3)$; in both cases, we prove the ...
Mark Haskins, Johannes Nordström
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, 2012 The purpose of this thesis is to present in detail two theories, not deductible from each other, but which obtain very similar results, giving a Riemannian-like structure to the set of probability measures.
DALUISO, ROBERTO
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Minimal Retraction of Space-time and Their Foldings [PDF]
, 2009 The folding of a manifold was, firstly introduced by Robertson in [1977] . Since then many authers have studied the folding of manifolds s. The deformation retracts of the manifolds defined and discussed.
El-Ahmady, A. E., Rafat, H.
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Group-Theoretic Description of Riemannian Spaces [PDF]
Ukrainian Mathematical Journal, 2003 It is shown that a locally geometrical structure of arbitrarily curved Riemannian space is defined by a deformed group of its ...
openaire +3 more sources