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Mar
22
comment Locally disk-preserving charts?
@AnthonyCarapetis: I don't believe that is true. As long as your circle doesn't intersect the north pole, then the image is a circle in the plane.
Mar
21
revised Locally disk-preserving charts?
added 115 characters in body
Mar
21
comment Locally disk-preserving charts?
Oh, I see that I have been sloppy. Let me try an edit. Sorry about that.
Mar
21
revised Locally disk-preserving charts?
added 127 characters in body
Mar
21
comment Locally disk-preserving charts?
Hmm.. But I want this to be true for all points inside the same chart. I.e, for (small enough) radii $r_1$ and $r_2$ I want the image of $B_{r_1}(p)$ and $B_{r_2}(q)$ to be disks.
Mar
21
revised Locally disk-preserving charts?
edited body
Mar
21
asked Locally disk-preserving charts?
Dec
11
comment Positive reach..
Hmm... Yeah, you could use a triangle or something similar. But now I'm confused about the condiitions in the paper!
Dec
11
asked Positive reach..
Nov
9
answered Counting problem(product rule)
Oct
28
awarded  Yearling
Aug
23
accepted Isomorphism between colimits.
Aug
21
revised Isomorphism between colimits.
added 66 characters in body
Aug
21
asked Isomorphism between colimits.
Jul
9
accepted Inverse of regular value is a submanifold, Milnor's proof
Jun
30
comment Determine subsequence of sequence
If you want any help you need to be more specific! Please give an explicit example of something you find difficult.
Mar
30
awarded  Nice Answer
Mar
29
comment Prob. 14, Sec. 2.7 in Erwine Kreyszig's INTRODUCTORY FUNCTIONAL ANALYSIS WITH APPLICATIONS
What if you let $x = e_i = (0, \ldots, 1, \ldots, 0)$ where the 1 occurs at the $i$-th position?
Mar
19
awarded  Popular Question
Feb
10
comment Find all x numbers for $(x-1)(x-3) > 0$
When is a product of two numbers positive? When both are positive or both negative.