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seen May 1 '13 at 19:05

Jan
12
comment Topological Meaning of semi-direct product
Perhaps you could describe the topological meaning of the amalgamated free product you refer to first. This may help in garnering an analogous description for the semi-direct product.
Jan
11
comment Conceptual error in Kosinski's “Differential Manifolds”?
As the textbook says on the bottom of pg 91 (at least in my 1993 edition), the existence of your g comes from Theorem 3.3.5 (pg 51) applied here with M={p}, N=M1, and F0, F1 your embeddings of Rm as tubular nbds of p. Then take g=H1 (as in the theorem statement). This has nothing to do with orientations.
Jan
6
answered Sphere with three Möbius strips glued and sphere with a handle and a Möbius strip glued
Dec
25
comment Proof of uniqueness of decomposition into prime knots
Googling yields math.ucla.edu/~radko/191.1.05w/marcos.pdf for one proof.
Dec
19
comment How to apply Borel-Cantelli Lemma?
To choose such a sequence $a_n$ requires $\mu$ (a probability measure on $[0,1]$?) to be absolutely continuous (Lebesgue measure of $A\subset [0,1] \Rightarrow \mu(A)=0$).
Dec
19
comment Doubts about Dominated Convergence Theorem
@ Chris: judging from the first paragraph, I'd guess $T_h(x) = f(x-h)$.
Dec
18
revised Rephrasing a Convergence Result to make use of the Borel-Cantelli Lemma
deleted 218 characters in body
Dec
18
answered Rephrasing a Convergence Result to make use of the Borel-Cantelli Lemma
Dec
15
awarded  Scholar
Dec
15
awarded  Supporter
Dec
15
accepted Homologous tori in 4-manifold
Dec
13
answered confusion about cup product in cohomology ring
Dec
13
awarded  Teacher
Dec
13
answered Möbius transform example explanation
Dec
10
asked Homologous tori in 4-manifold
Jun
26
awarded  Disciplined
Jun
24
awarded  Editor
Jun
24
awarded  Student