Subject: 4 Questions Date: Mon, 15 Oct 2001 09:06:05 +0530 From: "Priyavrat C. Deshpande" To: Hi I've got 4 questions. 1> What is the rigourus proof for, comb space with finitely many teeth is a retract of I*I. 2> A concrete example such that, p: X -> Y and q: Y-> Z are covering maps and q-1(z) is infinite so q(p) : X -> Z is not a cov. map. 3> h is a antipode preserving map from S1 to S1 with h(x) = y. TPT h* maps a generator of pi1(S1, x) to an odd multiple of a generator of a generator of pi1(s1,y). 4> Is anybody having the proof of conditions for lens spces L(n,k) and L(p,q) to be homeomorphic. Bye, Priyavrat.