- #1
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Hi, Topologists/Geometers:
I am trying to show that CP^2 and CP^2-bar (meaning CP^2 with reverse choice of
orientation, are not diffeomorphic.
I am kind of rusty; all I can think of using is the intersection form, but I do not
remember the precise result that we can use to show this. I have checked Rohklin's
theorem and other results in intersection forms, without success.
I would appreciate your suggestions.
I am trying to show that CP^2 and CP^2-bar (meaning CP^2 with reverse choice of
orientation, are not diffeomorphic.
I am kind of rusty; all I can think of using is the intersection form, but I do not
remember the precise result that we can use to show this. I have checked Rohklin's
theorem and other results in intersection forms, without success.
I would appreciate your suggestions.