Electrons in deterministic quasicrystalline potentials and hidden conserved quantities
P Kalugin, A Katz - Journal of Physics A: Mathematical and …, 2014 - iopscience.iop.org
We propose an ansatz for the wave function of a non-interacting quantum particle in a
deterministic quasicrystalline potential. It is applicable to both continuous and discrete …
deterministic quasicrystalline potential. It is applicable to both continuous and discrete …
The Witten-Reshetikhin-Turaev invariants of finite order mapping tori II
JE Andersen, B Himpel - Quantum Topology, 2012 - ems.press
We identify the leading order term of the asymptotic expansion of the Witten–Reshetikhin–
Turaev invariants for finite order mapping tori with classical invariants for all simple and …
Turaev invariants for finite order mapping tori with classical invariants for all simple and …
Covering spaces of character varieties
Let F be a finitely generated discrete group. Given a covering map H to G of Lie groups with
G either compact or complex reductive, there is an induced covering map Hom (F, H) to Hom …
G either compact or complex reductive, there is an induced covering map Hom (F, H) to Hom …
One-dimensional subgroups and connected components in non-abelian p-adic definable groups
W Johnson, N Yao - The Journal of Symbolic Logic, 2023 - cambridge.org
We generalize two of our previous results on abelian definable groups in p-adically closed
fields [12, 13] to the non-abelian case. First, we show that if G is a definable group that is not …
fields [12, 13] to the non-abelian case. First, we show that if G is a definable group that is not …
Commutators in groups definable in o-minimal structures
E Baro, E Jaligot, M Otero - Proceedings of the American Mathematical …, 2012 - ams.org
We prove the definability and actually the finiteness of the commutator width of many
commutator subgroups in groups definable in o-minimal structures. This applies in particular …
commutator subgroups in groups definable in o-minimal structures. This applies in particular …
[HTML][HTML] C⁎-superrigidity of 2-step nilpotent groups
C Eckhardt, S Raum - Advances in Mathematics, 2018 - Elsevier
We show that torsion-free finitely generated nilpotent groups are characterised by their
group C⁎-algebras and we additionally recover their nilpotency class as well as the …
group C⁎-algebras and we additionally recover their nilpotency class as well as the …
Monadic forgetful functors and (non-) presentability for C⁎-and W⁎-algebras
A Chirvasitu, J Ko - Journal of Pure and Applied Algebra, 2023 - Elsevier
We prove that the forgetful functors from the categories of C⁎-and W⁎-algebras to Banach⁎-
algebras, Banach algebras or Banach spaces are all monadic, answering a question of J …
algebras, Banach algebras or Banach spaces are all monadic, answering a question of J …
Higher generation by abelian subgroups in Lie groups
To a compact Lie group G one can associate a space E (2; G) akin to the poset of cosets of
abelian subgroups of a discrete group. The space E (2; G) was introduced by Adem, F …
abelian subgroups of a discrete group. The space E (2; G) was introduced by Adem, F …
Large scale geometry of Banach-Lie groups
H Ando, M Doucha, Y Matsuzawa - Transactions of the American …, 2022 - ams.org
We initiate the large scale geometric study of Banach-Lie groups, especially of linear
Banach-Lie groups. We show that the exponential length, originally introduced by Ringrose …
Banach-Lie groups. We show that the exponential length, originally introduced by Ringrose …
On Model-Theoretic Connected Groups
J Gismatullin - The Journal of Symbolic Logic, 2024 - cambridge.org
We introduce and study the model-theoretic notions of absolute connectedness and type-
absolute connectedness for groups. We prove that groups of rational points of split …
absolute connectedness for groups. We prove that groups of rational points of split …