Results 131 to 140 of about 93,496 (268)
On descent for coalgebras and type transformations [PDF]
Categories and General Algebraic Structures with Applications, 2016 We find a criterion for a morphism of coalgebras over a Barr-exact category to be effective descent and determine (effective) descent morphisms for coalgebras over toposes in some cases.
Maurice Kianpi
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Witt vectors with coefficients and TR
Proceedings of the London Mathematical Society, Volume 130, Issue 5, May 2025.Abstract We give a new construction of p$p$‐typical Witt vectors with coefficients in terms of ghost maps and show that this construction is isomorphic to the one defined in terms of formal power series from the authors' previous paper. We show that our construction recovers Kaledin's polynomial Witt vectors in the case of vector spaces over a perfect ...
Emanuele Dotto +3 more
wiley +1 more source
ON THE QUADRATIC FOCK FUNCTOR [PDF]
Infinite Dimensional Analysis, Quantum Probability and Related Topics, 2012 We prove that the quadratic second quantization of an operator p on L2(ℝd) ∩ L∞(ℝd) is an orthogonal projection on the quadratic Fock space if and only if p is a multiplication operator by a characteristic function χI, I ⊂ ℝd.
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Intrinsic Characterizations of Some Additive Functors [PDF]
, 1960 Charles E. Watts
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An intermediate term functor logic
Argumentos, 2019 Neste artigo, tentamos fazer algo bastante simples: conhecer os avanços de Sommers e Englebretsen (a saber, uma álgebra mais-menos para silogística) juntamente com os desenvolvimentos de Peterson e Thompson (ou seja, uma extensão da silogística com “a ...
José Martin Castro Manzano
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On monomorphic topological functors with finite supports
Karpatsʹkì Matematičnì Publìkacìï, 2013 We prove that a monomorphic functor $F:\mathbf{Comp}\to\mathbf{Comp}$ with finite supports isepimorphic, continuous, and its maximal $\emptyset$-modification $F^\circ$ preserves intersections.
T. O. Banakh +2 more
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Schur Functors and Motives [PDF]
K-Theory, 2004 In this article we study the class of Schur-finite motives, that is, motives which are annihilated by a Schur functor. We compare this notion to a similar one due to Kimura. In particular, we show that the motive of any curve is Kimura-finite. This last result has also been obtained by V. Guletskii.
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Advances in Mathematics, 1998 AbstractWe develop Auslander's theory of coherent functors in the case of functors on modules of finite type over a noetherian ringA. In particular, the duality of coherent functors, which interchanges representable functors and tensor products, plays a special role.
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Polynomial functors and opetopes
Advances in Mathematics, 2010 LaTeX, 54 pages, 75 texdraw figures. Accompanying opetope scripts in Tcl hidden in tex source after \end{document} for the sake of archival -- also available from http://mat.uab.cat/~kock/cat/zoom.html . v2: substantial expository improvements, following the advice from the referees.
Joachim Kock +3 more
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Probability measure monad on the category of ultrametric spaces
Applied General Topology, 2008 The set of all probability measures with compact support on an ultrametric space can be endowed with a natural ultrametric. We show that the functor of probability measures with finite supports (respectively compact supports) forms a monad in the ...
O.B. Hubal, M.M. Zarichnyi
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