Cup product
id:
cup-product-242-17612682
title:
Cup product
text:
In mathematics, specifically in algebraic topology, the cup product is a method of adjoining two cocycles of degree p and q to form a composite cocycle of degree p + q. This defines an associative (and distributive) graded commutative product operation in cohomology, turning the cohomology of a space X into a graded ring, H∗(X), called the cohomology ring. The cup product was introduced in work of J. W. Alexander, Eduard Čech and Hassler Whitney from 1935–1938, and, in full generality, by Samuel
brand slug:
wiki
category slug:
encyclopedia
description:
Turns the cohomology of a space into a graded ring
original url:
https://en.wikipedia.org/wiki/Cup_product
date created:
date modified:
2024-03-29T06:13:18Z
main entity:
{"identifier":"Q3388699","url":"https://www.wikidata.org/entity/Q3388699"}
image:
fields total:
13
integrity:
14