Results 101 to 110 of about 16,241 (233)
Upper bounds of orders of automorphism groups of leafless metric graphs
AKCE International Journal of Graphs and CombinatoricsWe prove a tropical analogue of the theorem of Hurwitz: A leafless metric graph of genus [Formula: see text] has at most 12 automorphisms when g = 2 and [Formula: see text] automorphisms when [Formula: see text].
Yusuke Nakamura, JuAe Song
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Constant power maps on Hardy fields and transseries
Journal of the London Mathematical Society, Volume 114, Issue 3, September 2026.Abstract Let T$\mathbb {T}$ be the differential field of logarithmic‐exponential transseries. We consider the expansion of T$\mathbb {T}$ by the binary map that sends a positive transseries f$f$ and a real number r$r$ to the transseries fr$f^r$, together with a constant symbol for the real number e$\mathrm{e}$. Building on recent work of Aschenbrenner,
Elliot Kaplan
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Automorphisms of Group Extensions [PDF]
, 2013 After a brief survey of the theory of group extensions and, in particular, of automorphisms of group extensions, we describe some recent reduction theorems for the inducibility problem for pairs of ...
Robinson, Derek J.S.
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Journal of Number Theory, 2003 We determine the automorphism group of the modular curve $X_0^*(p)$ for all prime numbers $p$.
Baker, Matthew, Hasegawa, Yuji
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Interpolation categories for conformal embeddings
Proceedings of the London Mathematical Society, Volume 133, Issue 3, September 2026.Abstract In this paper, we give a diagrammatic description of the categories of modules coming from the conformal embeddings V(slN,N)⊂V(soN2−1,1)$\mathcal{V}({\mathfrak{sl}}_{N},N)\subset \mathcal{V}({\mathfrak{so}}_{{N}^{2}-1},1)$. A small variant of this construction (morally corresponding to a conformal embedding of glN${\mathfrak{gl}}_{N}$ level N ...
Cain Edie‐Michell, Noah Snyder
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Nonamenable subforests of multi‐ended quasi‐pmp graphs
Proceedings of the London Mathematical Society, Volume 133, Issue 3, September 2026.Abstract We prove the a.e. nonamenability of locally finite quasi‐pmp Borel graphs whose every component admits at least three nonvanishing ends with respect to the underlying Radon–Nikodym cocycle. We witness their nonamenability by constructing Borel subforests with at least three nonvanishing ends per component, and then applying Tserunyan and ...
Ruiyuan Chen +2 more
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Graph automorphisms of a finite modular lattice [PDF]
, 1999 summary:This paper deals with the relations between graph automorphisms and direct factors of a semimodular lattice of locally finite ...
Jakubík, Ján, Csontóová, Mária
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Free semigroups of large critical exponent
Journal of Topology, Volume 19, Issue 3, September 2026.Abstract For a convergence group equipped with an expanding coarse‐cocycle, we construct finitely generated free subsemigroups, which we call Bishop−−Jonessemigroups$\textit{Bishop--Jones semigroups}$, of critical exponent arbitrarily close to but strictly less than the critical exponent of the ambient group.
Aleksander Skenderi
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Bernoulli shifts and induced automorphisms [PDF]
, 1979 We show that Bernoulli shifts induce, on a dense class of sets, weakly mixing automorphisms which are not mixing. We also show that the non-Bernoulli K-automorphisms described by Ornstein and Shields induce Bernoulli shifts on a dense class of sets.
Swanson, Laif
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Finite abelian group actions on weakly Lefschetz cohomologically symplectic manifolds
Journal of Topology, Volume 19, Issue 3, September 2026.Abstract We study continuous finite abelian group actions on weakly Lefschetz cohomologically symplectic (WLS) manifolds, a collection of topological manifolds that includes all compact connected Kaehler manifolds. We prove that for any WLS manifold X$X$, there exists a number C$C$ such that, for any integer m⩾C$m\geqslant C$, if (Z/m)k$({\mathbb {Z ...
Ignasi Mundet i Riera
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