Results 31 to 40 of about 32,457 (190)
FREE GROUPS AND AUTOMORPHISM GROUPS OF INFINITE STRUCTURES
Forum of Mathematics, Sigma, 2014 Given a cardinal $\lambda $ with $\lambda =\lambda ^{\aleph _0}$
PHILIPP LÜCKE, SAHARON SHELAH
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Journal of High Energy Physics, 2023 Two types of Carrollian field theories are shown to emerge from finite current-current deformations of toroidal CFT2’s when the deformation coupling is precisely fixed, up to a sign.
Pulastya Parekh +2 more
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Automorphisms and derivations of upper triangular matrix rings [PDF]
, 1995 Kezlan proved that for a commutative ring C, every C-automorphism of the ring of upper triangular matrices over C is inner. We generalize this result to rings in which all idempotents are central; moreover we show that for a semiprime ring A and central ...
Jøndrup, S.
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Time-Dependent Pseudo-Hermitian Hamiltonians and a Hidden Geometric Aspect of Quantum Mechanics
Entropy, 2020 A non-Hermitian operator H defined in a Hilbert space with inner product 〈 · | · 〉 may serve as the Hamiltonian for a unitary quantum system if it is η -pseudo-Hermitian for a metric operator (positive-definite automorphism) η .
Ali Mostafazadeh
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On Inner Automorphisms of Finite Groups [PDF]
Proceedings of the American Mathematical Society, 1989 It is shown that in certain classes of finite groups, inner automorphisms are characterized by an extension property and also by a dual lifting property. This is a consequence of the fact that for any finite group G G and any prime p p , there is a p p -group P P and a semidirect ...
openaire +1 more source
Outer group automorphisms may become inner in the integral group ring [PDF]
, 1995 In this note we shall construct a finite group G which has an automorphism α, which is not inner; however, the induced automorphism on SG is inner, where S is the ring of algebraic integers in a suitably chosen algebraic number field.
Roggenkamp, Klaus W. +1 more
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On Conjugacy of MASAs and the Outer Automorphism Group of the Cuntz Algebra [PDF]
, 2013 We investigate the structure of the outer automorphism group of the Cuntz algebra and the closely related problem of conjugacy of MASAa in O_n. In particular, we exhibit an uncountable family of MASAs, conjugate to the standard MASA D_n via Bogolubov ...
Conti, Roberto +2 more
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The embedding structure and the shift operator of the U(1) lattice current algebra [PDF]
, 1995 The structure of block-spin embeddings of the U(1) lattice current algebra is described. For an odd number of lattice sites, the inner realizations of the shift automorphism areclassified.
A. Recknagel +8 more
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On conjugacy of maximal abelian subalgebras and the outer automorphism group of the Cuntz algebra [PDF]
, 2015 We investigate the structure of the outer automorphism group of the Cuntz algebra and the closely related problem of conjugacy of maximal abelian subalgebras in On.
CONTI, ROBERTO +2 more
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On normal automorphisms of n-periodic products of finite cyclic groups [PDF]
International Journal of Group Theory, 2013 We prove that each normal automorphism of the$n$-periodic product of cyclic groups of odd order$rge1003$ is inner, whenever $r$ divides $n$.
Ashot Pahlevanyan +3 more
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