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Homotopy theory, homological algebra, algebraic treatments of manifolds.

2 votes
0 answers
243 views

topology of infinite union of hyperplanes

Hi all: I am working on Functional Analysis. I encounter a topology problem in my study of spectrum of certain operators, and it has bothered me for quite some time. Any idea or references is greatly …
Ron 's user avatar
  • 89
4 votes
1 answer
320 views

a naive question about homogeneous polynomials

Suppose $p$ is a homogeneous polynomial in $n$ complex variables. Let S be the hypersurface defined by $p(z)=0$. Then is the 1-form $dp/p$ always non-exact on the complement $C^n\setminus S$? Any an …
Ron 's user avatar
  • 89