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Resultats globals: 15 registres trobats en 0.03 segons.
Documents de recerca, 15 registres trobats

Documents de recerca	15 registres trobats 1 - 10 anar al registre:

54 p, 575.3 KB

21 p, 255.4 KB

44 p, 352.5 KB

Localization of algebras over coloured operads / Casacuberta, Carles ; Gutiérrez, Javier J. ; Moerdijk, Ieke ; Vogt, Rainer M. ; Centre de Recerca Matemàtica
We give sufficient conditions for homotopical localization functors to preserve algebras over coloured operads in monoidal model categories. Our approach encompasses a number of previous results about preservation of structures under localizations, such as loop spaces or infinite loop spaces, and provides new results of the same kind. [...]
Centre de Recerca Matemàtica 2008 (Prepublicacions del Centre de Recerca Matemàtica ; 816)

24 p, 306.2 KB

Free and fragmenting filling length / Bridson, Martin, R. ; Riley, Tim ; Centre de Recerca Matemàtica
The filling length of an edge-circuit η in the Cayley 2-complex of a finite presentation of a group is the minimal integer length L such that there is a combinatorial null-homotopy of η down to a base point through loops of length at most L. [...]
Centre de Recerca Matemàtica 2005 (Prepublicacions del Centre de Recerca Matemàtica ; 660)

21 p, 265.5 KB

The Zariski-Lefschetz principle for higher homotopy groups of nongeneric pencils / Tibăr, Mihai ; Centre de Recerca Matemàtica
We prove a general Zariski-van Kampen-Lefschetz type theorem for higher homotopy groups of generic and nongeneric pencils on singular open complex spaces.
Centre de Recerca Matemàtica 2005 (Prepublicacions del Centre de Recerca Matemàtica ; 626)

15 p, 219.7 KB

The orthogonal subcategory problem in homotopy theory / Casacuberta, Carles ; Chorny, Boris ; Centre de Recerca Matemàtica
It is known that, in a locally presentable category, localization exists with respect to every set of morphisms, while the statement that localization with respect to every (possibly proper) class of morphisms exists in locally presentable categories is equivalent to a large-cardinal axiom from set theory. [...]
Centre de Recerca Matemàtica 2005 (Prepublicacions del Centre de Recerca Matemàtica ; 651)

26 p, 265.4 KB

The identity type weak factorisation system / Gambino, Nicola ; Garner, Richard ; Centre de Recerca Matemàtica
We show that the classifying category C(T)of a dependent type theory T with axioms for identity types admits a nontrivial weak factorisation system. After characterising this weak factorisation system explicitly, we relate it to the homotopy theory of groupoids.
Centre de Recerca Matemàtica 2008 (Prepublicacions del Centre de Recerca Matemàtica ; 802)

5 p, 138.0 KB

Homotopy exponents for large H-Spaces / Chachólski, Wojciech ; Pitsch, Wolfgang ; Scherer, Jérôme ; Stanley, Don ; Centre de Recerca Matemàtica
We show that H-spaces with finitely generated cohomology, as an algebra or as an algebra over the Steenrod algebra, have homotopy exponents at all primes. This provides a positive answer to a question of Stanley.
Centre de Recerca Matemàtica 2008 (Prepublicacions del Centre de Recerca Matemàtica ; 797) - DOI (Digital Object Identifier)

10.1093/imrn/rnn061

14 p, 168.6 KB

Weighted limits in simplicial homotopy theory / Gambino, Nicola ; Centre de Recerca Matemàtica
We extend the theory of Quillen adjunctions by combining ideas of homotopical algebra and of enriched category theory. Our results describe how the formulas for homotopy colimits of Bousfield and Kan arise from general formulas describing the derived functor of the weighted colimit functor.
Centre de Recerca Matemàtica 2008 (Prepublicacions del Centre de Recerca Matemàtica ; 790)

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