Let $A^*$ be a graded-commutative ring with $A^n = 0$ for sufficiently large $n$ and each $A^n$ finitely generated. When does there exist a finite CW-complex $X$ with $H^*(X) \cong A$ as graded rings?
2026-05-02 19:31:53.1777750313
When is a graded ring the cohomology ring of a CW-complex?
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