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In differential topology, Morse theory enables one to analyze the topology of a manifold by studying differentiable functions on that manifold.

4 votes
1 answer
718 views

Morse theory and adiabatic limits

Let's start with a product manifold $M\times N$, with a product Riemannian metric $g_M\oplus g_N$. Consider a generic Morse function $f(x, y)$ on $M\times N$. Then its critical points are discrete and …
Guangbo Xu's user avatar
  • 1,207
3 votes
2 answers
650 views

Thom's gradient conjecture and analyticity

Suppose we have an analytic function $f: U \to {\mathbb R}$, where $U\subset {\mathbb R}^n$ is an open subset and $0 \in U$ is a critical point of $f$. Thom conjectured that if a trajectory $x(t)$ of …
Guangbo Xu's user avatar
  • 1,207
3 votes
0 answers
679 views

Transversality and isolated degenerate critical points

Maybe some of the following statements are not precise. Please correct them. Let $M$ be a compact smooth manifold. Let $f: M \to {\mathbb R}$ be a Morse function. Then a generic Riemannian metric $g$ …
Guangbo Xu's user avatar
  • 1,207
2 votes

Bijection of critical points on two manifolds

Consider the Lagrange multiplier $$F(x, t, c) = f(x) + t( g(x) - c).$$ If $g$ satisfies your condition and $f$ is generic, then one can show that $$S:= \{ (x, t, c)\ |\ \nabla f(x) + t \nabla g(x) = 0 …
Guangbo Xu's user avatar
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