Results 61 to 70 of about 1,309 (212)
Morphisms and Order Ideals of Toric Posets
Mathematics, 2016 Toric posets are in some sense a natural “cyclic” version of finite posets in that they capture the fundamental features of a partial order but without the notion of minimal or maximal elements.
Matthew Macauley
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Twisted Conjugacy Classes for Polyfree Groups [PDF]
Communications in Algebra, 2013 11 ...
Fel'shtyn, Alexander +2 more
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Automorphism groups of P1$\mathbb {P}^1$‐bundles over geometrically ruled surfaces
Journal of the London Mathematical Society, Volume 113, Issue 6, June 2026.Abstract We classify the pairs (X,π)$(X,\pi)$, where π:X→S$\pi \colon X\rightarrow S$ is a P1$\mathbb {P}^1$‐bundle over a non‐rational geometrically ruled surface S$S$ and Aut∘(X)$\mathrm{Aut}^\circ (X)$ is relatively maximal, that is, maximal with respect to the inclusion in the group Bir(X/S)$\mathrm{Bir}(X/S)$.
Pascal Fong
wiley +1 more source
The space of conjugacy classes of a topological group [PDF]
Transactions of the American Mathematical Society, 1974 The space G# of conjugacy classes of a topological group G is the orbit space of the action of G on itself by inner automorphisms. For a class of connected and locally connected groups which includes all analytic [ZJgroups, the universal covering space of G# may be obtained as the space of conjugacy classes of a group which is locally isomorphic with G,
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Isotopy and equivalence of knots in 3‐manifolds
Journal of the London Mathematical Society, Volume 113, Issue 6, June 2026.Abstract Two knots K$K$ and J$J$ in S3$S^3$ are isotopic if and only if they are related by an orientation‐preserving diffeomorphism of S3$S^3$. This claim follows from the fact that any orientation‐preserving self‐diffeomorphism of S3$S^3$ is isotopic to the identity. We show that this same idea applies to any prime oriented closed 3‐manifold.
Paolo Aceto +4 more
wiley +1 more source
Base sizes for sporadic simple groups
, 2010 Let G be a permutation group acting on a set . A subset of is a base for G ifits pointwise stabilizer in G is trivial. We write b(G) for the minimal size of a base forG.
Robert A. Wilson +8 more
core +1 more source
The sheets of a classical lie algebra [PDF]
, 2005 We consider the adjoint action of a connected complex semisimple group G on its Lie algebra g. A sheet of g is a maximal irreducible subset of g consisting of G-orbits of a fixed dimension.
Im Hof, Andreas Emanuel
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A note on groups with many locally supersoluble subgroups [PDF]
International Journal of Group Theory, 2015 It is proved here that if G is a locally graded group satisfying the minimal condition on subgroups which are not locally supersoluble, then G is either locally supersoluble or a \vCernikov group.
Francesco de Giovanni +1 more
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F^ω-injectors of finite groups [PDF]
Известия Саратовского университета. Новая серия: Математика. Механика. ИнформатикаOnly finite groups and classes of finite groups are considered. $\frak F$-injectors (B. Fischer, W. Gaschutz, B. Hartley, 1967) and $\frak F$-projectors (W.
Sorokina, Marina M., Novikova, Diana G.
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Twisted conjugacy classes in nilpotent groups [PDF]
Journal für die reine und angewandte Mathematik (Crelles Journal), 2009 22 pages; section 6 has been moved to section 2 and minor modification has been made on exposition; to be published in Crelle ...
Gonçalves, Daciberg, Wong, Peter
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