Results 41 to 50 of about 6,556,269 (259)

Some examples of nontrivial homotopy groups of modules

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
The concept of the homotopy theory of modules was discovered by Peter Hilton as a result of his trip in 1955 to Warsaw, Poland, to work with Karol Borsuk, and to Zurich, Switzerland, to work with Beno Eckmann.
C. Joanna Su
doaj   +1 more source

Gauge invariant perturbation theory via homotopy transfer

open access: yesJournal of High Energy Physics, 2021
We show that the perturbative expansion of general gauge theories can be expressed in terms of gauge invariant variables to all orders in perturbations. In this we generalize techniques developed in gauge invariant cosmological perturbation theory, using
Christoph Chiaffrino   +2 more
doaj   +1 more source

The homotopy type of the polyhedral product for shifted complexes [PDF]

open access: yes, 2013
We prove a conjecture of Bahri, Bendersky, Cohen and Gitler: if K is a shifted simplicial complex on n vertices,X1,...,Xn are pointed connected CW-complexes and CXi is the cone on Xi, then the polyhedral product determined by K and the pairs (C Xi , Xi )
Theriault, Stephen, Grbić, Jelena
core   +1 more source

Reconstructing rational stable motivic homotopy theory [PDF]

open access: yesCompositio Mathematica, 2017
Using a recent computation of the rational minus part of $SH(k)$ by Ananyevskiy, Levine and Panin, a theorem of Cisinski and Déglise and a version of the Röndigs and Østvær theorem, rational stable motivic homotopy theory over an infinite perfect field ...
G. Garkusha
semanticscholar   +1 more source

The Derivatives of Homotopy Theory [PDF]

open access: yesTransactions of the American Mathematical Society, 1995
We construct a functor of spaces, M n {M_n}
openaire   +2 more sources

Lawvere-Tierney sheafification in Homotopy Type Theory [PDF]

open access: yes, 2016
International audienceSheafification is a popular tool in topos theory which allows to extend the internal logic of a topos with new principles. One of its most famous applications is the possibility to transform a topos into a boolean topos using the ...
Tabareau, Nicolas, Quirin, Kevin
core   +1 more source

Chromatic homotopy theory is asymptotically algebraic [PDF]

open access: yesInventiones Mathematicae, 2017
Inspired by the Ax–Kochen isomorphism theorem, we develop a notion of categorical ultraproducts to capture the generic behavior of an infinite collection of mathematical objects.
T. Barthel   +2 more
semanticscholar   +1 more source

Homotopy Theory

open access: yes, 2023
The workshop brought together experts in homotopy theory from many areas, including chromatic homotopy theory, algebraic K-theory, derived algebra and equivariant homotopy theory. We had a lecture series on the recent disproof of the telescope conjecture.

core   +2 more sources

Eilenberg–Maclane spaces and stabilisation in homotopy type theory

open access: yes, 2023
In this note, we study the delooping of spaces and maps in homotopy type theory. We show that in some cases, spaces have a unique delooping, and give a simple description of the delooping in these cases.
Wärn, David,, David Wärn
core   +1 more source

Differential contracting homotopy in higher-spin theory

open access: yesJournal of High Energy Physics, 2023
A new efficient approach to the analysis of nonlinear higher-spin equations, that treats democratically auxiliary spinor variables Z A and integration homotopy parameters in the non-linear vertices of the higher-spin theory, is developed.
M. A. Vasiliev
doaj   +1 more source

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