Zobrazeno 1 - 10
of 1 184
pro vyhledávání: '"20h15"'
Autor:
Gleissner, Christian, Kotonski, Julia
We provide a fine classification of rigid three-dimensional torus quotients with isolated canonical singularities, up to biholomorphism and diffeomorphism. This complements the classification of Calabi-Yau 3-folds of type $\rm{III}_0$, which are thos
Externí odkaz:
http://arxiv.org/abs/2409.01050
Autor:
Gąsior, Anna, Lutowski, Rafał
We give a necessary and sufficient condition for existence of spinc structures on real Bott manifolds.
Externí odkaz:
http://arxiv.org/abs/2407.01166
Autor:
Catanese, Fabrizio
In this paper we characterize the compact orbifolds, quotients $ X = \mathcal{D} /\Gamma$ of a bounded symmetric domain $ \mathcal{D}$ of tube type by the action of a discontinuous group $\Gamma$, as those projective orbifolds with ample canonical di
Externí odkaz:
http://arxiv.org/abs/2406.03027
Following previous work on congruence subgroups and crystallographic braid groups, we study the lower central series of congruence braid groups related to the braid group $B_3$, showing in particular that corresponding quotients are almost crystallog
Externí odkaz:
http://arxiv.org/abs/2404.05804
This paper presents a systematic study for the general theory of non-Abelian Fourier series of integrable functions on the homogeneous space $\mathbf{\Gamma}\backslash SE(d)$, where $SE(d)$ is the special Euclidean group in dimension $d$, and $\mathb
Externí odkaz:
http://arxiv.org/abs/2403.15874
We provide an explicit computation of the cohomology groups (with untwisted coefficients) of semidirect products of the form $\mathbb{Z}^n\rtimes \mathbb{Z}/m$ with $m$ free of squares, by means of formulas that only depend on $n$, $m$ and the action
Externí odkaz:
http://arxiv.org/abs/2403.14569
Let $n\le 5$ be an integer, and let $\Gamma$ be a finite group. We prove that if $\rho , \rho': \Gamma \to O(n)$ are two representations that are conjugate by an orientation-preserving diffeomorphism, then they are conjugate by an element of $SO(n)$.
Externí odkaz:
http://arxiv.org/abs/2403.07348
Autor:
Catanese, Fabrizio
In this paper we characterize the quotients $ X = T/G$ of a complex torus $T$ by the action of a finite group $G$ as the K\"ahler orbifold classifying spaces of the even Euclidean cristallographic groups $\Gamma$, and we prove other similar and stron
Externí odkaz:
http://arxiv.org/abs/2403.06044
Autor:
Derdzinski, Andrzej, Piccione, Paolo
Hiss and Szczepa\'nski proved in 1991 that the holonomy group of any compact flat Riemannian manifold, of dimension at least two, acts reducibly on the rational span of the Euclidean lattice associated with the manifold via the first Bieberbach theor
Externí odkaz:
http://arxiv.org/abs/2311.11411
Autor:
Imai, Yusuke
Shogi is a traditional Japanese strategy board game in the same family as chess, chaturanga, and xiangqi, and has been theoretically studied from various aspects. The research on recommended sequences of moves in each opening of shogi is called josek
Externí odkaz:
http://arxiv.org/abs/2401.08591