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kakarotyjn
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1.Let C denote the unit circle in the plane.Suppose f:C->C is a map which is not homotopic to the identity.Prove that f(x)=-x for some point x of C.
2.CY denotes the cone on Y.Show that any two maps f,g:X->CY are homotopic.
2.CY denotes the cone on Y.Show that any two maps f,g:X->CY are homotopic.