Results 31 to 40 of about 83,964 (235)

Smooth plane curves with outer Galois points whose reduced automorphism group is $A_{5}$

Proceedings of the Japan Academy. Series A Mathematical sciences, 2022
: In [8] the first author classified automorphism groups of smooth plane curves of degree not less than four into five types. If the curve has a unique outer Galois point, then the quotient group of its automorphism group by the Galois group at the point ...
Takeshi Harui, Kei Miura, A. Ohbuchi
semanticscholar   +1 more source

Spontaneous CP violation and symplectic modular symmetry in Calabi-Yau compactifications

Nuclear Physics B, 2021
We explore the geometrical origin of CP and the spontaneous CP violation in Calabi-Yau compactifications. We find that the CP symmetry is identified with an outer automorphism of the symplectic modular group in the large complex structure regime of ...
Keiya Ishiguro, Tatsuo Kobayashi, Hajime Otsuka   +2 more
doaj   +1 more source

2-Group symmetries in class S

SciPost Physics, 2022
2-group symmetries are generalized symmetries that arise when 1-form and 0-form symmetries mix with each other. We uncover the existence of a class of 2-group symmetries in general 4d N=2 theories of Class S that can be constructed by compactifying 6d
Lakshya Bhardwaj
doaj   +1 more source

Weights in a Benson-Solomon block

Forum of Mathematics, Sigma, 2023
To each pair consisting of a saturated fusion system over a p-group together with a compatible family of Külshammer-Puig cohomology classes, one can count weights in a hypothetical block algebra arising from these data.
Justin Lynd, Jason Semeraro
doaj   +1 more source

Crystallographic groups with trivial center and outer automorphism group [PDF]

Mathematical Proceedings of the Cambridge Philosophical Society, 2015
Let Γ be a crystallographic group of dimension n, i.e. a discrete, cocompact subgroup of Isom(ℝ n ) = O(n) ⋉ ℝ n . For any n ⩾ 2, we construct a crystallographic group with a trivial center and trivial outer automorphism group.
R. Lutowski, A. Szczepański
semanticscholar   +1 more source

Global form of flavor symmetry groups in 4d N=2 theories of class S

SciPost Physics, 2022
We provide a systematic method to deduce the global form of flavor symmetry groups in 4d N=2 theories obtained by compactifying 6d N=(2,0) superconformal field theories (SCFTs) on a Riemann surface carrying regular punctures and possibly outer ...
Lakshya Bhardwaj
doaj   +1 more source

Infinite groups acting faithfully on the outer automorphism group of a right-angled Artin group [PDF]

, 2015
We construct the first known examples of infinite subgroups of the outer automorphism group of Out(A_Gamma), for certain right-angled Artin groups A_Gamma.
Corey Bregman, Neil J. Fullarton
semanticscholar   +1 more source

Representation stability and outer automorphism groups

Documenta Mathematica, 2022
In this paper we study families of representations of the outer automorphism groups indexed on a collection of finite groups \mathcal{U} . We encode this large amount of data into a convenient abelian category which generalizes the category of VI-modules appearing in the representation ...
Pol, Luca, Strickland, Neil P.
openaire   +2 more sources

Automorphisms of shift spaces and the Higman--Thompson groups: the one-sided case

Discrete Analysis, 2021
Automorphisms of shift spaces and the Higman--Thompson groups: the one-sided case, Discrete Analysis 2021:15, 35 pp. Symbolic dynamics is the study of dynamical systems of the following kind, known as _shift spaces_.
Collin Bleak, Peter J. Cameron, Feyishayo Olukoya   +2 more
doaj   +1 more source

Dimension invariants of outer automorphism groups [PDF]

Groups, Geometry, and Dynamics, 2017
The geometric dimension for proper actions \underline{\mathrm{gd}}(G) of a group G is the minimal dimension of a classifying space for proper actions \underline{E}G .
Degrijse, Dieter, Souto, Juan
openaire   +4 more sources