Results 91 to 100 of about 2,016 (201)

Homomorphisms of separoids

Electronic Notes in Discrete Mathematics, 2007
Abstract The notion of separoid homomorphisms was introduced in [Nesetřil, J., and R. Strausz, Universality of separoids, Arch. Math. (Brno) 42 (2006), 85–101], by Jarik Nesetřil and the author, where it was proved that separoids endowed with such maps constitute a dense and universal category.
openaire   +1 more source

Totally elliptic surface group representations

Bulletin of the London Mathematical Society, Volume 58, Issue 8, August 2026.
Abstract A surface group representation into a Lie group is totally elliptic if every simple closed curve on the surface is mapped to an elliptic element. In this note, we characterize all totally elliptic surface group representations into PSL2R$\operatorname{PSL}_2 \mathbb {R}$ and PSL2C$\operatorname{PSL}_2\mathbb {C}$ by showing that they are ...
Arnaud Maret
wiley   +1 more source

Q-soft Translation of Q-soft Subgroups

Journal of New Theory, 2020
In this study, we introduce the concept Q-soft translations of Q-soft subgroups. Next we investigate the properties of them and we prove that every Q-soft translation of Q-soft subgroup is also Q-soft subgroup.
Rasul Rasuli
doaj  

Groups with a finite Busemann boundary are virtually cyclic

Bulletin of the London Mathematical Society, Volume 58, Issue 8, August 2026.
Abstract This note is a continuation of the study of the relationship between the geometry of Cayley graphs and the size of its metric‐functional boundary. We show that if there exists a Cayley graph with finitely many Busemann points, then the underlying group is virtually cyclic.
Corentin Bodart, Liran Ron‐George, Ariel Yadin   +2 more
wiley   +1 more source

A birational description of the minimal exponent

Journal of the London Mathematical Society, Volume 114, Issue 2, August 2026.
Abstract We give a description of the minimal exponent of a hypersurface using higher direct images of suitably twisted sheaves of log forms on a log resolution.
Qianyu Chen, Mircea Mustaţă
wiley   +1 more source

Finding an almost perfect matching in a hypergraph avoiding forbidden submatchings

Journal of the London Mathematical Society, Volume 114, Issue 2, August 2026.
Abstract In 1973, Erdős conjectured the existence of high girth (n,3,2)$(n,3,2)$‐Steiner systems. Recently, Glock, Kühn, Lo, and Osthus and independently Bohman and Warnke proved the approximate version of Erdős' conjecture. Recently, Kwan, Sah, Sawhney, and Simkin proved Erdős' conjecture.
Michelle Delcourt, Luke Postle
wiley   +1 more source

AUTOMORPHISM OF CYCLIC GROUPS

Journal of Mountain Area Research
In this article, we will study cyclic groups  A.  We have found a class of cyclic groups A which are not determined with their automorphism groups in CQ.
Ibrahima Sagno, Mouctar N'DIAYE, A.M. Sebeldin   +2 more
doaj   +1 more source

Undecidability of polynomial inequalities in weighted graph homomorphism densities

Forum of Mathematics, Sigma
Many problems and conjectures in extremal combinatorics concern polynomial inequalities between homomorphism densities of graphs where we allow edges to have real weights.
Grigoriy Blekherman, Annie Raymond, Fan Wei   +2 more
doaj   +1 more source

THE PROBLEM OF NEW PROPERTIES OF NUMBERS

Надежность и качество сложных систем
Background. The proposed work is devoted to research to clarify the axiomatization of arithmetic in connection with the presence of special assumptions in it.
L.G. Sushkov
doaj   +1 more source

HOMOMORPHISM IN ROUGH LATTICE

Journal of New Theory, 2015
− In this paper, we introduce the concept of set-valued homomorphism of a lattice which isthe generalization of ordinary lattice homomorphism. We construct generalized rough lower and upperapproximations operators, by means of a set-valued mapping, which
Dipankar Rana, Sankar Kumar Roy
doaj