Results 1 to 10 of about 16,147,506 (162)
Dynamic and Renormalization-Group Extensions of the Landau Theory of Critical Phenomena [PDF]
Entropy, 2020 We place the Landau theory of critical phenomena into the larger context of multiscale thermodynamics. The thermodynamic potentials, with which the Landau theory begins, arise as Lyapunov like functions in the investigation of the relations among ...
Miroslav Grmela +2 more
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Spontaneous preterm birth following unintended hysterotomy extension during second‐stage labor cesarean delivery [PDF]
PregnancyBackground Unintended hysterotomy extensions occur frequently during second‐stage cesarean delivery and may result in uterine and cervical tissue trauma.
Adwoa A. Baffoe‐Bonnie +3 more
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On a maximal subgroup of the Symplectic group Sp(4,4) [PDF]
AUT Journal of Mathematics and Computing, 2023 This paper is dealing with a split extension group of the form 26 :(3× A5), which is the largest maximal subgroup of the Symplectic group Sp(4, 4). We refer to this extension by G.
Ayoub Basheer
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Lie 2-groups from loop group extensions [PDF]
Journal of Homotopy and Related Structures, 2023 We give a very simple construction of the string 2-group as a strict Fréchet Lie 2-group. The corresponding crossed module is defined using the conjugation action of the loop group on its central extension, which drastically simplifies several ...
Matthias Ludewig, K. Waldorf
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Higher dimensional algebraic fiberings of group extensions [PDF]
Journal of the London Mathematical Society, 2022 We prove some conditions for the existence of higher dimensional algebraic fibering of group extensions. This leads to various corollaries on incoherence of groups and some geometric examples of algebraic fibers of type Fn$F_n$ but not FPn+1$FP_{n+1}$ of
D. Kochloukova, Stefano Vidussi
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Smooth 2-Group Extensions and Symmetries of Bundle Gerbes [PDF]
Communications in Mathematical Physics, 2020 We study bundle gerbes on manifolds M that carry an action of a connected Lie group G. We show that these data give rise to a smooth 2-group extension of G by the smooth 2-group of hermitean line bundles on M.
Severin Bunk, Lukas Müller, R. Szabo
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Generalized Hopf–Ore Extensions of Hopf Group-Coalgebras
Mathematics, 2022 In this paper, we introduce the concept of a generalized Hopf–Ore extension of a Hopf group-coalgebra and give the necessary and sufficient conditions for the Ore extension of a Hopf group-coalgebra to be a Hopf group-coalgebra.
Ding-Guo Wang, Xing Wang
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Group extensions and marginal series of pair of groups
Comptes Rendus. Mathématique, 2021 In this article, using the concept of generalized Baer-invariant of a pair of groups, we establish some related isomorphisms between lower marginal quotient pairs of groups, which are generalized versions of some isomorphisms of Stallings. We also derive
Rismanchian, Mohammad Reza
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Anosov flows, growth rates on covers and group extensions of subshifts [PDF]
Inventiones Mathematicae, 2019 The aim of this paper is to study growth properties of group extensions of hyperbolic dynamical systems, where we do not assume that the extension satisfies the symmetry conditions seen, for example, in the work of Stadlbauer on symmetric group ...
R. Dougall, Richard Sharp
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BNS INVARIANTS AND ALGEBRAIC FIBRATIONS OF GROUP EXTENSIONS [PDF]
Journal of the Institute of Mathematics of Jussieu, 2019 Let G be a finitely generated group that can be written as an extension $$ \begin{align*} 1 \longrightarrow K \stackrel{i}{\longrightarrow} G \stackrel{f}{\longrightarrow} \Gamma \longrightarrow 1 \end{align*} $$ where K is a finitely generated group ...
Stefan Friedl, Stefano Vidussi
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