Results 11 to 20 of about 700 (252)

Topos models for physics and topos theory [PDF]

open access: yesJournal of Mathematical Physics, 2014
What is the role of topos theory in the topos models for quantum theory as used by Isham, Butterfield, Döring, Heunen, Landsman, Spitters, and others? In other words, what is the interplay between physical motivation for the models and the mathematical framework used in these models?
exaly   +10 more sources

Relative topos theory via stacks [PDF]

open access: green, 2021
We introduce new foundations for relative topos theory based on stacks. One of the central results in our theory is an adjunction between the category of toposes over the topos of sheaves on a given site $({\mathcal{C}}, J)$ and that of ${\mathcal{C}}$-indexed categories.
Olivia Caramello, Riccardo Zanfa
openalex   +3 more sources

Localization theory in an $\infty$-topos [PDF]

open access: green, 2019
We develop the theory of reflective subfibrations on an $\infty$-topos $\mathcal{E}$. A reflective subfibration $L_\bullet$ on $\mathcal{E}$ is a pullback-compatible assignment of a reflective subcategory $\mathcal{D}_X\subseteq \mathcal{E}{/X}$, for every $X \in \mathcal{E}$.
Marco Vergura
openalex   +3 more sources

Algebraic set theory and the effective topos [PDF]

open access: yesJournal of Symbolic Logic, 2005
AbstractFollowing the book Algebraic Set Theory from André Joyal and Ieke Moerdijk [8], we give a characterization of the initial ZF-algebra, for Heyting pretoposes equipped with a class of small maps. Then, an application is considered (the effective topos) to show how to recover an already known model (McCarty [9]).
Kouwenhoven-Gentil, Claire   +1 more
openaire   +6 more sources

Modality and Contextuality in Topos Quantum Theory [PDF]

open access: yesStudia Logica, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Benjamin Eva
openaire   +3 more sources

Design creativity for transitions: C-K/Topos, an advanced design theory for creative preservation

open access: goldDesign Science
In recent decades, design creativity and design theory have made great progress in terms of understanding and supporting the logic of engineering design for breakthrough and disruptive innovation. Design for transition relies on these new methods, but it
Pascal Le Masson   +6 more
doaj   +2 more sources

Localization Theory in an Infinity Topos [PDF]

open access: green, 2019
We develop the theory of reflective subfibrations on an ∞-topos E. A reflective subfibration L on E is a pullback-compatible assignment of a reflective subcategory D_X ⊆ E/X with associated localization functor L_X, for every X in E. Reflective subfibrations abound in homotopy theory, albeit often disguised, e.g., as stable factorization systems.
Marco Vergura
openalex   +3 more sources

The Sierpinski Object in the Scott Realizability Topos [PDF]

open access: yesLogical Methods in Computer Science, 2020
We study the Sierpinski object $\Sigma$ in the realizability topos based on Scott's graph model of the $\lambda$-calculus. Our starting observation is that the object of realizers in this topos is the exponential $\Sigma ^N$, where $N$ is the natural ...
Tom de Jong, Jaap van Oosten
doaj   +1 more source

Higher Topos Theory in Physics

open access: yes
A brief exposition of the point of higher topos theory in (mathematical) physics, commissioned for the Encyclopedia of Mathematical Physics 2nd ed.
openaire   +4 more sources

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