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1d
awarded  Nice Question
2d
awarded  Necromancer
Apr
29
awarded  Yearling
Jul
3
awarded  Notable Question
Jul
2
awarded  Curious
Apr
29
awarded  Yearling
Sep
13
asked How to find a homeomorphism $\mathbb{R}^{n}\rightarrow\mathbb{R}^{n}$ having certain properties
Sep
12
comment Typo or additional hypotheses needed in problem 5, p.71 of Bredon's Topology and Geometry?
I edited the question. It may be possible that the map you define is not an isomorphism after all.
Sep
12
revised Typo or additional hypotheses needed in problem 5, p.71 of Bredon's Topology and Geometry?
Possible counterexample found
Aug
31
accepted Is there a cantor set in $\mathbb{R}^{n}-\{0\}$ which intersects every ray from the origin?
Aug
31
revised Is there a cantor set in $\mathbb{R}^{n}-\{0\}$ which intersects every ray from the origin?
Title change
Aug
30
comment Is there a cantor set in $\mathbb{R}^{n}-\{0\}$ which intersects every ray from the origin?
Very elegant, +1!
Aug
30
revised Is there a cantor set in $\mathbb{R}^{n}-\{0\}$ which intersects every ray from the origin?
Examples incorrect
Aug
30
comment Is there a cantor set in $\mathbb{R}^{n}-\{0\}$ which intersects every ray from the origin?
Yes, you are absolutely right. I edited the question.
Aug
30
asked Is there a cantor set in $\mathbb{R}^{n}-\{0\}$ which intersects every ray from the origin?
Aug
30
revised is $\{(x,y) : x,y \in \mathbb{Z} \}$ a closed set?
Typo corrected
Aug
30
revised is $\{(x,y) : x,y \in \mathbb{Z} \}$ a closed set?
Typo corrected
Aug
30
answered is $\{(x,y) : x,y \in \mathbb{Z} \}$ a closed set?
Aug
28
awarded  Nice Answer
Aug
27
accepted A functional structure on the graph of the absolute value function