Look up sheaf in Wiktionary, the free dictionary. In mathematics, a sheaf (pl.: sheaves) is a tool for systematically tracking data (such as sets, abelian...
68 KB (11,057 words) - 02:29, 4 December 2024
Coherent sheaf cohomology is a powerful technique, in particular for studying the sections of a given coherent sheaf. A quasi-coherent sheaf on a ringed...
40 KB (6,934 words) - 06:32, 11 November 2024
Look up sheaf in Wiktionary, the free dictionary. Sheaf may refer to: Sheaf (agriculture), a bundle of harvested cereal stems Sheaf (mathematics), a mathematical...
588 bytes (117 words) - 01:39, 23 June 2019
In mathematics, the constant sheaf on a topological space X {\displaystyle X} associated to a set A {\displaystyle A} is a sheaf of sets on X {\displaystyle...
6 KB (1,006 words) - 04:49, 11 November 2024
In mathematics, a constructible sheaf is a sheaf of abelian groups over some topological space X, such that X is the union of a finite number of locally...
6 KB (952 words) - 15:14, 2 October 2024
In mathematics, the stalk of a sheaf is a mathematical construction capturing the behaviour of a sheaf around a given point. Sheaves are defined on open...
10 KB (1,588 words) - 07:02, 11 November 2024
In mathematics, injective sheaves of abelian groups are used to construct the resolutions needed to define sheaf cohomology (and other derived functors...
7 KB (1,059 words) - 21:31, 6 February 2022
Ringed space (redirect from Structure sheaf)
Precisely, it is a topological space equipped with a sheaf of rings called a structure sheaf. It is an abstraction of the concept of the rings of continuous...
9 KB (1,486 words) - 03:46, 4 November 2024
In mathematics, sheaf cohomology is the application of homological algebra to analyze the global sections of a sheaf on a topological space. Broadly speaking...
36 KB (5,832 words) - 16:58, 27 October 2024
In mathematics, an invertible sheaf is a sheaf on a ringed space that has an inverse with respect to tensor product of sheaves of modules. It is the equivalent...
3 KB (464 words) - 00:24, 9 December 2024
Section (redirect from Section (mathematics))
inverse of some morphism Section (fiber bundle), in topology Part of a sheaf (mathematics) Section (group theory), a quotient object of a subobject Conic section...
3 KB (342 words) - 09:03, 21 October 2024
In mathematics, a sheaf of O-modules or simply an O-module over a ringed space (X, O) is a sheaf F such that, for any open subset U of X, F(U) is an O(U)-module...
19 KB (3,459 words) - 09:25, 11 November 2024
described using sheaf complexes that are actually perverse sheaves. It was clear from the outset that perverse sheaves are fundamental mathematical objects at...
19 KB (2,253 words) - 13:24, 24 May 2024
Hecke eigensheaf (category Sheaf theory)
In mathematics, a Hecke eigensheaf is any sheaf whose value is based on an eigenfunction. It is an object that is a tensor-multiple of itself when formed...
965 bytes (74 words) - 15:13, 9 September 2024
Condensed mathematics is a theory developed by Dustin Clausen and Peter Scholze which replaces a topological space by a certain sheaf of sets, in order...
7 KB (743 words) - 11:13, 8 December 2024
In algebraic geometry and other areas of mathematics, an ideal sheaf (or sheaf of ideals) is the global analogue of an ideal in a ring. The ideal sheaves...
4 KB (569 words) - 02:29, 29 June 2023
10. Berlin: Springer Verlag. Tennison, Barry R. (1975), Sheaf theory, London Mathematical Society Lecture Note Series, vol. 20, Cambridge University...
71 KB (7,687 words) - 05:05, 13 December 2024
In mathematics, especially in algebraic geometry and the theory of complex manifolds, coherent sheaf cohomology is a technique for producing functions...
26 KB (4,664 words) - 11:28, 9 October 2024
Topos (redirect from Topos (mathematics))
Francis (1994). Handbook of Categorical Algebra: Volume 3, Sheaf Theory. Encyclopedia of Mathematics and its Applications. Vol. 52. Cambridge University Press...
33 KB (4,383 words) - 06:44, 13 December 2024
address space Processes Ptolemy Project Rust (programming language) Sheaf (mathematics) Threads X10 (programming language) Structured concurrency Operating...
14 KB (1,408 words) - 15:00, 7 December 2024
In mathematics, the exponential sheaf sequence is a fundamental short exact sequence of sheaves used in complex geometry. Let M be a complex manifold,...
3 KB (485 words) - 15:07, 22 June 2020
In mathematics, a torsion sheaf is a sheaf of abelian groups F {\displaystyle {\mathcal {F}}} on a site for which, for every object U, the space of sections...
1 KB (131 words) - 17:48, 26 January 2023
Gluing axiom (redirect from B-sheaf)
In mathematics, the gluing axiom is introduced to define what a sheaf F {\displaystyle {\mathcal {F}}} on a topological space X {\displaystyle X} must...
10 KB (1,843 words) - 03:33, 5 November 2024
Direct image functor (redirect from Direct image of a sheaf)
In mathematics, the direct image functor is a construction in sheaf theory that generalizes the global sections functor to the relative case. It is of...
7 KB (969 words) - 22:18, 15 December 2022
Grothendieck topology (redirect from Site (sheaf theory))
comes from. The classical definition of a sheaf begins with a topological space X {\displaystyle X} . A sheaf associates information to the open sets of...
31 KB (4,507 words) - 15:34, 21 November 2024
The history of mathematics deals with the origin of discoveries in mathematics and the mathematical methods and notation of the past. Before the modern...
140 KB (16,201 words) - 23:24, 13 December 2024
. If X {\displaystyle X} is a scheme over S {\displaystyle S} then the sheaf O X / S {\displaystyle O_{X/S}} is defined by O X / S ( T ) {\displaystyle...
7 KB (844 words) - 13:50, 22 December 2022
topology. Topoi also display deep connections to mathematical logic. Every Grothendieck topos has a special sheaf called a subobject classifier. This subobject...
69 KB (9,328 words) - 15:13, 17 October 2024
Differentiable manifold (redirect from Sheaf of smooth functions)
charts and atlases). Third, the sheaf OM is not manifestly a sheaf of functions at all. Rather, it emerges as a sheaf of functions as a consequence of...
67 KB (9,497 words) - 20:48, 13 December 2024
Étale topology (redirect from Étale sheaf)
called an étale sheaf if it satisfies the analog of the usual gluing condition for sheaves on topological spaces. That is, F is an étale sheaf if and only...
8 KB (1,090 words) - 20:40, 27 March 2024