Results 61 to 70 of about 104,157 (229)

Automorphisms of Some Magmas of Order $k+k^2$

Известия Иркутского государственного университета: Серия "Математика", 2018
This paper is devoted to the study of automorphisms of finite magmas and to the representation of the symmetric permutation group $ S_k $ and some of its subgroups by automorphism groups of finite magmas.
A.V. Litavrin
doaj   +1 more source

Thurston obstructions and tropical geometry

Bulletin of the London Mathematical Society, EarlyView.
Abstract We describe an application of tropical moduli spaces to complex dynamics. A post‐critically finite branched covering φ$\varphi$ of S2$S^2$ induces a pullback map on the Teichmüller space of complex structures of S2$S^2$; this descends to an algebraic correspondence on the moduli space of point‐configurations of P1$\mathbb {P}^1$.
Rohini Ramadas
wiley   +1 more source

Limit trees for free group automorphisms: universality

Forum of Mathematics, Sigma
To any free group automorphism, we associate a universal (cone of) limit tree(s) with three defining properties: first, the tree has a minimal isometric action of the free group with trivial arc stabilizers; second, there is a unique expanding dilation ...
Jean Pierre Mutanguha
doaj   +1 more source

Wild blocks of type A$A$ Hecke algebras are strictly wild

Bulletin of the London Mathematical Society, EarlyView.
Abstract We prove that all wild blocks of type A$A$ Hecke algebras with quantum characteristic e⩾3$e \geqslant 3$ — that is, blocks of weight at least 2 — are strictly wild, with the possible exception of the weight 2 Rouquier block for e=3$e = 3$.
Liron Speyer
wiley   +1 more source

The automorphism group of the Andrásfai graph [PDF]

Discrete Mathematics Letters, 2022
Seyed Morteza Mirafzal
doaj   +1 more source

Orbit Entropy and Symmetry Index Revisited

Mathematics, 2021
The size of the orbits or similar vertices of a network provides important information regarding each individual component of the network. In this paper, we investigate the entropy or information content and the symmetry index for several classes of ...
Maryam Jalali-Rad, Modjtaba Ghorbani, Matthias Dehmer, Frank Emmert-Streib   +3 more
doaj   +1 more source

Twists of twisted generalized Weyl algebras

Bulletin of the London Mathematical Society, EarlyView.
Abstract We study graded twisted tensor products and graded twists of twisted generalized Weyl algebras (TGWAs). We show that the class of TGWAs is closed under these operations assuming mild hypotheses. We generalize a result on cocycle equivalence among multiparameter quantized Weyl algebras to the setting of TGWAs.
Jason Gaddis, Daniele Rosso
wiley   +1 more source

The divisibility conjecture for automorphism groups of finite p-groups [PDF]

Advances in Group Theory and Applications, 2020
Jill Dietz
doaj   +1 more source

Semi-automorphisms of groups [PDF]

Proceedings of the American Mathematical Society, 1958
A semi-automorphism of a group G is a 1-1 mapping, X, of G onto itself such that 0(aba) =4(a)o(b)4(a) for all a, bEG. The nature of such mappings, in the special cases when G is the symmetric or alternating group (finite or infinite) and in a few other examples, was determined by Dinkines [I], who showed they must be automorphisms or anti-automorphisms.
I. N. Herstein, M. F. Ruchte
openaire   +2 more sources

Faber's socle intersection numbers via Gromov–Witten theory of elliptic curve

Bulletin of the London Mathematical Society, EarlyView.
Abstract The goal of this very short note is to give a new proof of Faber's formula for the socle intersection numbers in the tautological ring of Mg$\mathcal {M}_g$. This new proof exhibits a new beautiful tautological relation that stems from the recent work of Oberdieck–Pixton on the Gromov–Witten theory of the elliptic curve via a refinement of ...
Xavier Blot, Sergey Shadrin, Ishan Jaztar Singh   +2 more
wiley   +1 more source