Show that the degree of every map \(\mathbb {C}P^2\to \mathbb {C}P^2\) of the complex projective plane to itself is nonnegative.
Question
Math 6510 • Differentiable Manifolds
Fall 2014 • Question 12
Question
Fall 2014 • Question 12
Show that the degree of every map \(\mathbb {C}P^2\to \mathbb {C}P^2\) of the complex projective plane to itself is nonnegative.