Let \(\alpha \) be a closed two form on \(S^4\). Prove that \(\alpha \wedge \alpha \) vanishes at some point.
Question
Math 6510 • Differentiable Manifolds
Summer 2020 • Question 6
Question
Summer 2020 • Question 6
Let \(\alpha \) be a closed two form on \(S^4\). Prove that \(\alpha \wedge \alpha \) vanishes at some point.