Results 11 to 20 of about 1,750,632 (381)
An algebra of observables for de Sitter space [PDF]
Journal of High Energy Physics, 2022 We describe an algebra of observables for a static patch in de Sitter space, with operators gravitationally dressed to the worldline of an observer. The algebra is a von Neumann algebra of Type II_1.
V. Chandrasekaran +3 more
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Logical Methods in Computer Science, 2017 In this paper we investigate important categories lying strictly between the Kleisli category and the Eilenberg-Moore category, for a Kock-Z\"oberlein monad on an order-enriched category. Firstly, we give a characterisation of free algebras in the spirit of domain theory.
Hofmann, Dirk, Sousa, Lurdes
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Algebraic entropy for algebraic maps [PDF]
Journal of Physics A: Mathematical and Theoretical, 2015 17 ...
Hone, A. N. W. +2 more
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Algebraic Algebras with Involution [PDF]
Proceedings of the American Mathematical Society, 1972 The following theorem is proved: Let R R be an algebra with involution over an uncountable field F F . Then if the symmetric elements of R R are algebraic, R R is algebraic.
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Centrification of algebras and Hopf algebras [PDF]
Canadian Mathematical Bulletin, 2021 AbstractWe investigate a method of construction of central deformations of associative algebras, which we call centrification. We prove some general results in the case of Hopf algebras and provide several examples.
Matthew Westaway, Dmitriy Rumynin
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All missing Ramsey numbers for trees versus the four-page book
Electronic Journal of Graph Theory and Applications, 2021 For the Ramsey number r(Tn, Bm), where Tn denotes a tree of order n and Bm denotes the m-page book K2 + bar(K)m, it is known that r(Tn, Bm)=2n − 1 if n ≥ 3m − 3. In case of n < 3m − 3, r(Tn, Bm) has not been completely evaluated except for m ≤ 3. Here
Roland Lortz, Ingrid Mengersen
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Braided Weyl algebras and differential calculus on U(u(2)) [PDF]
, 2011 On any Reflection Equation algebra corresponding to a skew-invertible Hecke symmetry (i.e. a special type solution of the Quantum Yang-Baxter Equation) we define analogs of the partial derivatives.
Berezin +22 more
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Generically algebraic algebras [PDF]
Transactions of the American Mathematical Society, 1967 The notion of generic minimum polynomial and generic norm for finite-dimensional strictly power-associative algebras, introduced by \textit{N. Jacobson} [J. Reine Angew. Math. 201, 178--195 (1959; Zbl 0084.03601), and Osaka Math. J. 15, 25--50 (1963; Zbl 0199.07201)] are extended here to infinite-dimensional power-associative algebras which are ...
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Algebraic isomorphisms of limit algebras [PDF]
Transactions of the American Mathematical Society, 2000 We prove that algebraic isomorphisms between limit algebras are automatically continuous, and consider the consequences of this result. In particular, we give partial solutions to a conjecture and an open problem by Power. As a further consequence, we describe epimorphisms between various classes of limit algebras.
Timothy D. Hudson +2 more
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Cohomology of Presheaves of Monoids
Mathematics, 2020 The purpose of this work is to extend Leech cohomology for monoids (and so Eilenberg-Mac Lane cohomology of groups) to presheaves of monoids on an arbitrary small category.
Pilar Carrasco, Antonio M. Cegarra
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