Results 1 to 10 of about 39,202 (43)

Prisms and prismatic cohomology [PDF]

open access: yesAnnals of Mathematics, 2019
We introduce the notion of a prism, which may be regarded as a "deperfection" of the notion of a perfectoid ring. Using prisms, we attach a ringed site --- the prismatic site --- to a $p$-adic formal scheme. The resulting cohomology theory specializes to
B. Bhatt, P. Scholze
semanticscholar   +1 more source

On the generic part of the cohomology of non-compact unitary Shimura varieties [PDF]

open access: yesAnnals of Mathematics, 2019
We prove that the generic part of the mod l cohomology of Shimura varieties associated to quasi-split unitary groups of even dimension is concentrated above the middle degree, extending our previous work to a non-compact case.
A. Caraiani, P. Scholze
semanticscholar   +1 more source

Machine Learning Line Bundle Cohomology [PDF]

open access: yesFortschritte der Physik, 2019
We investigate different approaches to machine learning of line bundle cohomology on complex surfaces as well as on Calabi‐Yau three‐folds. Standard function learning based on simple fully connected networks with logistic sigmoids is reviewed and its ...
Callum R. Brodie   +3 more
semanticscholar   +1 more source

Symmetry protected topological phases and generalized cohomology [PDF]

open access: yesJournal of High Energy Physics, 2017
We discuss the classification of SPT phases in condensed matter systems. We review Kitaev’s argument that SPT phases are classified by a generalized cohomology theory, valued in the spectrum of gapped physical systems [20, 23].
D. Gaiotto, T. Johnson-Freyd
semanticscholar   +1 more source

Etale cohomology of diamonds [PDF]

open access: yes, 2017
Motivated by problems on the etale cohomology of Rapoport--Zink spaces and their generalizations, as well as Fargues's geometrization conjecture for the local Langlands correspondence, we develop a six functor formalism for the etale cohomology of ...
P. Scholze
semanticscholar   +1 more source

Bounded cohomology of discrete groups [PDF]

open access: yes, 2016
Bounded cohomology of groups was first defined by Johnson and Trauber during the seventies in the context of Banach algebras. As an independent and very active research field, however, bounded cohomology started to develop in 1982, thanks to the ...
R. Frigerio
semanticscholar   +1 more source

Symmetry protected topological orders and the group cohomology of their symmetry group [PDF]

open access: yes, 2011
Symmetry protected topological (SPT) phases are gapped short-range-entangled quantum phases with a symmetry G. They can all be smoothly connected to the same trivial product state if we break the symmetry.
Xie Chen, Z. Gu, Zhengxin Liu, X. Wen
semanticscholar   +1 more source

Schwinger-Keldysh formalism. Part II: thermal equivariant cohomology [PDF]

open access: yes, 2016
A bstractCausally ordered correlation functions of local operators in near-thermal quantum systems computed using the Schwinger-Keldysh formalism obey a set of Ward identities.
Felix M. Haehl   +2 more
semanticscholar   +1 more source

Gromov-Witten classes, quantum cohomology, and enumerative geometry [PDF]

open access: yes, 1994
The paper is devoted to the mathematical aspects of topological quantum field theory and its applications to enumerative problems of algebraic geometry. In particular, it contains an axiomatic treatment of Gromov-Witten classes, and a discussion of their
M. Kontsevich, Y. Manin
semanticscholar   +1 more source

Khovanov homology from Floer cohomology [PDF]

open access: yesJournal of The American Mathematical Society, 2015
This paper realises the Khovanov homology of a link in S 3 S^3 as a Lagrangian Floer cohomology group, establishing a conjecture of Seidel and the second author.
M. Abouzaid, I. Smith
semanticscholar   +1 more source

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