Consider a compact differentiable \(m\)-manifold \(M\) without boundary and let \(N=M\times M\). Let \(\Delta \subset N\) be the diagonal. Prove that there is no compact differentiable \(m+1\)-dimensional submanifold with boundary \(B\subset N\), so that the boundary of \(B\) is \(\Delta \).
Question
Math 6510 • Differentiable Manifolds
Fall 2002 • Question 2