Results 1 to 10 of about 277 (136)
Complexity of equational theory of relational algebras with standard projection elements [PDF]
Synthese, 2015 The class \(\mathsf{TPA}\) of t rue p airing a lgebras is defined to be the class of relation algebras expanded with concrete set theoretical projection functions. The main results of the present paper is that neither the equational theory of \(\mathsf{TPA}\) nor the first order theory of \(\mathsf{TPA}\) are decidable.
Szabolcs Mikulás +2 more
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Born’s Rule from Contextual Relative-Entropy Minimization [PDF]
EntropyWe give a variational characterization of the Born rule. For each measurement context, we project a quantum state ρ onto the corresponding abelian algebra by minimizing Umegaki relative entropy; Petz’s Pythagorean identity makes the dephased state the ...
Arash Zaghi
doaj +2 more sources
Zelevinski algebras related to projective representations [PDF]
Transactions of the American Mathematical Society, 1988 We define L L - PSH \operatorname {PSH} -algebras, and prove a classification theorem for such objects. The letters refer respectively to a ground ring L L and to the positivity, selfadjointness and Hopf structures on an algebra, the basic example of which occurred in the study of projective ...
P. Hoffman, M. Bean
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Effectiveness of In‐Person Versus Online Negotiation Teaching for Practitioners
Negotiation Journal, EarlyView., 2023 Most negotiation courses have been taught in person. However, online education has become more prevalent over the past decade due to its flexibility, cost and time efficiency, and new digital technologies designed to compensate for the lack of personal contact.
Patricia Oehlschläger, Michael A. Merz
wiley +1 more source
Truth Space Method for Caching Database Queries
Моделирование и анализ информационных систем, 2015 We propose a new method of client-side data caching for relational databases with a central server and distant clients. Data are loaded into the client cache based on queries executed on the server. Every query has the corresponding DB table – the result
S. V. Mosin, S. V. Zykin
doaj +1 more source
Partial group algebra with projections and relations [PDF]
Rocky Mountain Journal of Mathematics, 2019 We introduce the notion of the partial group algebra with projections and relations and show that this C*-algebra is a partial crossed product. Examples of partial group algebras with projections and relations are the Cuntz-Krieger algebras and the unitization of C*-algebras of directed graphs.
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Relations and trails in lattices of projections in W*-algebras [PDF]
Proceedings of the Edinburgh Mathematical Society, 2019 AbstractThis paper concernsHH-relations in the latticesP(M) of all projections of W*-algebrasM. IfMis a finite algebra, all these relations are generated by trails inP(M). IfMis an infinite countably decomposable factor, they are either generated by trails or associated with them.
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Projective resolutions over Artin algebras with zero relations
Illinois Journal of Mathematics, 1985 One proves that gl.dim \(A\leq n+1\) for finite dimensional algebras over a field K whose ordinary quiver is a tree and a minimal set of relations has cardinality n. Using covering techniques one shows also that, for a finite dimensional zero relations K-algebra B with m minimal relations, \(gl.\dim B=\infty\) or \(gl.\dim B\leq m^ 2+2.\)
Edward L. Green +8 more
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On orthogonal projections related to representations of the Hecke algebra on a tensor space
Journal of Mathematical Physics, 2022 We consider the problem of finding orthogonal projections P of a rank r that gives rise to representations of the Hecke algebra HN(q) in which the generators of the algebra act locally on the Nth tensor power of the space Cn. It is shown that such projections are global minima of a certain functional.
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Deformation of the Okubic Albert algebra and its relation to the Okubic affine and projective planes
, 2022 We present a deformation of the Okubic Albert algebra introduced by Elduque whose rank-1 idempotent elements are in biunivocal correspondence with points of the Okubic projective plane, thus extending to Okubic algebras the correspondence found by Jordan, Von Neumann, Wigner between the octonionic projective plane and the rank-3 Exceptional Jordan ...
Corradetti, Daniele +2 more
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