Let \(\Sigma _g\) be a closed, orientable surface of genus \(g\). Given \(p\ge 1\) distinct points \(\{x_1,\ldots ,x_p\}\subseteq \Sigma _g\), let \(\Sigma _{g,p}=\Sigma _g-\{x_1,\ldots ,x_p\}\). Find the cohomology of \(\Sigma _{g,p}\) with integer coefficients, including its cup product structure.
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Math 6510 • Differentiable Manifolds
Summer 2017 • Question 7