Results 91 to 100 of about 80,953 (208)
A note on categorical entropy of bielliptic surfaces and Enriques surfaces
Bulletin of the London Mathematical Society, Volume 58, Issue 5, May 2026.Abstract In this note, we show that there exists an autoequivalence of positive categorical entropy on the derived category of bielliptic surfaces. This gives the first example of a surface admitting positive categorical entropy in the absence of both positive topological entropy and any spherical objects.
Tomoki Yoshida
wiley +1 more source
On Automorphisms of Subfactors
Journal of Functional Analysis, 1996 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Which singular tangent bundles are isomorphic?
Journal of the London Mathematical Society, Volume 113, Issue 5, May 2026.Abstract Logarithmic and b$ b$‐tangent bundles provide a versatile framework for addressing singularities in geometry. Introduced by Deligne and Melrose, these modified bundles resolve singularities by reframing singular vector fields as well‐behaved sections of these singular bundles.
Eva Miranda, Pablo Nicolás
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Power graphs of Brandt semigroups
AKCE International Journal of Graphs and CombinatoricsIn this paper, we give some classes of Brandt semigroups which can be uniquely determined by their power graphs. Additionally, it is proved that the completely 0-simple semigroup whose automorphism group is same as that of its power graph is precisely ...
Boxing Yang +3 more
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Entrywise transforms preserving matrix positivity and nonpositivity
Journal of the London Mathematical Society, Volume 113, Issue 5, May 2026.Abstract We characterize real and complex functions which, when applied entrywise to square matrices, yield a positive definite matrix if and only if the original matrix is positive definite. We refer to these transformations as sign preservers. Compared to the classical work on entrywise preservers by Schoenberg and others, we completely resolve this ...
Dominique Guillot +3 more
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Bounding the order of automorphisms of certain curves
, 1995 We study upper bounds on the order of automorphisms of non-singular curves $X$ satisfying at least one of the following hypothesis: 1) $X$ is an $m$-sheeted covering of exactly one non-singular curve of genus $\gamma$, where $m$ is prime; 2) the center ...
Torres, Fernando
core +1 more source
Automorphisms of the Dihedral Groups [PDF]
Proceedings of the National Academy of Sciences, 1942 Not ...
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Time Automorphisms on C*-Algebras
Mathematics, 2015 Applications of fractional time derivatives in physics and engineering require the existence of nontranslational time automorphisms on the appropriate algebra of observables.
R. Hilfer
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Automorphisms of free braided nonassociative algebras of rank 2
Қарағанды университетінің хабаршысы. Математика сериясыWe prove the elementary reducibility of any nonaffine automorphism of a free nonassociative algebra of rank two over an arbitrary field. Using this result establish a property of automorphisms of this algebra that will be needed in later. We then derive
R. Mutalip +2 more
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The classification of modular Lie superalgebras of type M
Open Mathematics, 2015 The natural filtration of the infinite-dimensional simple modular Lie superalgebra M over a field of characteristic p > 2 is proved to be invariant under automorphisms by discussing ad-nilpotent elements.
Ma Lili, Chen Liangyun
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