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Apr
9
answered Is the pair $(\{0,4,8,12\},+_{16})$ consist a Group?
Apr
9
comment Is the pair $(\{0,4,8,12\},+_{16})$ consist a Group?
@Omnomnomnom It's a pair consisting of a set and a binary operation.
Apr
5
comment Fastest way to meet, without communication, on a sphere?
You are right. $ $
Apr
4
comment Fastest way to meet, without communication, on a sphere?
The two could be on non-intersecting orbits like northern and southern polar circles.
Apr
4
comment Cantor set + Cantor set =$[0,2]$
set = number ?!
Mar
26
comment Does there exists an automorphism of $\Bbb{C}$ that's also an exponential hom?
What is $z^w$ ?
Mar
23
comment realizing/ understanding $C^*(\phi_g(C([0,1])))$ and "support projection of an element of a $C^*$-algebra
Btw, it is not ideal to put two rather unrelated questions into one post. You might consider posting your second question separately.
Mar
23
comment realizing/ understanding $C^*(\phi_g(C([0,1])))$ and "support projection of an element of a $C^*$-algebra
No, but, as you see from my answer, the case where $g$ is invertible is not very interesting.
Mar
23
answered realizing/ understanding $C^*(\phi_g(C([0,1])))$ and "support projection of an element of a $C^*$-algebra
Mar
23
comment realizing/ understanding $C^*(\phi_g(C([0,1])))$ and "support projection of an element of a $C^*$-algebra
1) Warning: your map $\phi_g$ is not a homomorphism. 2) You allow that $g$ takes the value $0$ at some places, don't you?
Mar
20
comment A question in Banach space
cross posted: mathoverflow.net/questions/200515/a-question-in-banach-space
Mar
14
comment preserving problem
You can easily write down a dense set of bump functions.
Mar
13
answered preserving problem
Mar
13
revised preserving problem
added 1 character in body
Mar
12
revised preserving problem
edited tags
Mar
12
comment preserving problem
Do you want capital L?
Mar
12
reviewed Approve preserving problem
Mar
12
comment are random rotations dense?
You have written down a random set. Are you asking whether it is almost surely dense in $[0,1)$?
Mar
12
answered Demonstration with complex number
Mar
12
answered Does limit exist for this function and how to plot it in wolfram alpha?