Pattern-equivariant cohomology with integer coefficients
Pattern-equivariant cohomology with integer coefficients
复制标题
具有整数系数的模式等变上同调
DOI:
10.1017/s0143385707000259
复制
发表时间:
2006
影响因子:
0.9
通讯作者:
L. Sadun
中科院分区:
文献类型:
--
作者:
L. Sadun
Abstract We relate Kellendonk and Putnam’s pattern-equivariant (PE) cohomology to the inverse-limit structure of a tiling space. This gives a version of PE cohomology with integer coefficients, or with values in any Abelian group. It also provides an easy proof of Kellendonk and Putnam’s original theorem relating PE cohomology to the Čech cohomology of the tiling space. The inverse-limit structure also allows for the construction of a new non-Abelian invariant, the PE representation variety.