Results 21 to 30 of about 700 (252)

Gelfand spectra in Grothendieck toposes using geometric mathematics [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2014
In the (covariant) topos approach to quantum theory by Heunen, Landsman and Spitters, one associates to each unital C*-algebra, A, a topos T(A) of sheaves on a locale and a commutative C*-algebra, a, within that topos.
Bas Spitters   +2 more
doaj   +1 more source

Point-free Construction of Real Exponentiation [PDF]

open access: yesLogical Methods in Computer Science, 2022
We define a point-free construction of real exponentiation and logarithms, i.e.\ we construct the maps $\exp\colon (0, \infty)\times \mathbb{R} \rightarrow \!(0,\infty),\, (x, \zeta) \mapsto x^\zeta$ and $\log\colon (1,\infty)\times (0, \infty ...
Ming Ng, Steven Vickers
doaj   +1 more source

On the Nielsen-Schreier Theorem in Homotopy Type Theory [PDF]

open access: yesLogical Methods in Computer Science, 2022
We give a formulation of the Nielsen-Schreier theorem (subgroups of free groups are free) in homotopy type theory using the presentation of groups as pointed connected 1-truncated types.
Andrew W Swan
doaj   +1 more source

On the Structure of Abstract H*-Algebras [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2018
Previously we have shown that the topos approach to quantum theory of Doering and Isham can be generalised to a class of categories typically studied within the monoidal approach to quantum theory of Abramsky and Coecke.
Kevin Dunne
doaj   +1 more source

Applications of Non-Standard analysis in Topoi to Mathematical Neurosciences and Artificial Intelligence: Infons, Energons, Receptons (I)

open access: yesMathematics, 2021
The purpose of this paper is to promote new methods in mathematical modeling inspired by neuroscience—that is consciousness and subconsciousness—with an eye toward artificial intelligence as parts of the global brain.
Ileana Ruxandra Badea   +3 more
doaj   +1 more source

On Monstrosity of Metaphor in Cognitive Paradigm [PDF]

open access: yesИзвестия Южного федерального университета: Филологические науки, 2016
Khazagerov Georgy Georgievich - Ph.D. of philology, professor. Russian language dpt. Institute of philology, journalism and cross-cultural communication. Southern Federal University. Abstract.
Георгий Георгиевич Хазагеров
doaj   +4 more sources

Identification of novel neutralizing determinants for protection against HCV

open access: yesHepatology, EarlyView., 2022
Identification of novel neutralizing determinants for protection against hepatitis C virus. Abstract Background and Aims HCV evasion of neutralizing antibodies (nAb) results in viral persistence and poses challenges to the development of an urgently needed vaccine.
Garazi P. Alzua   +12 more
wiley   +1 more source

Spectral Presheaves, Kochen-Specker Contextuality, and Quantale-Valued Relations [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2018
In the topos approach to quantum theory of Doering and Isham the Kochen–Specker Theorem, which asserts the contextual nature of quantum theory, can be reformulated in terms of the global sections of a presheaf characterised by the Gelfand spectrum of
Kevin Dunne
doaj   +1 more source

Axioms for Modelling Cubical Type Theory in a Topos [PDF]

open access: yesLogical Methods in Computer Science, 2018
The homotopical approach to intensional type theory views proofs of equality as paths. We explore what is required of an object $I$ in a topos to give such a path-based model of type theory in which paths are just functions with domain $I$.
Ian Orton, Andrew M. Pitts
doaj   +1 more source

Internal higher topos theory

open access: yes, 2023
Has been merged with arXiv:2209 ...
Martini, Louis, Wolf, Sebastian
openaire   +2 more sources

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