Reputation
3,578
Top tag
Next privilege 5,000 Rep.
Approve tag wiki edits
Badges
1 16 31
Impact
~41k people reached

2d
reviewed Approve Why does it have to be an integer?
Apr
29
comment Can we detect smoothness of a norm by its behavior along paths?
I'm pretty sure the origin shouldn't be in $\alpha$'s codomain. ​ ​
Apr
28
comment Sum of probabilities is infinite
Oh yes, I was wrong about the $P$ on the right of that implication. ​ However, the implication you have won't necessarily hold. ​ ​ ​ ​
Apr
28
comment Find Bayesian Nash Equilibria
denotes ​ $\mapsto$ ​ "is an element of" ​ ​ ​ ? ​ ​ ​ ​ ​ ​ ​ ​
Apr
28
comment Particle in a box
en.wikipedia.org/wiki/Baire_category_theorem ​ ​
Apr
28
comment Sort the following functions according to order of growth
I'm voting to close this post as not a question. ​ ​
Apr
28
comment Sum of probabilities is infinite
Now, the $P$s on your $\implies$ line shouldn't be there, and even with them removed, I don't see why that line should hold. ​ ​ ​ ​
Apr
28
comment Sum of probabilities is infinite
Unless they defined $P$ very strangely, there's an error in that question. ​ A probability is either a real number or undefined, not something that can be true or false. ​ ​ ​ ​
Apr
24
comment Is it possible that two metric spaces are metrically isomorphic but not homeomorphic.
Metric isomorphisms are trivially continuous. ​ ​
Apr
14
comment Are Euclidean domains exactly the ones which we can define “mod” on?
I'm talking about the mod function, for which outputs should be non-negative, at least when both inputs are positive. ​ ​
Apr
14
comment Are Euclidean domains exactly the ones which we can define “mod” on?
By "non-trivial", I mean [[not isomorphic to the integers] and [has an ideal that's neither just {0} nor the whole ring]]. ​ $\mathbb{Q}[x]$ doesn't work because , for example, what would [x-1 mod x] be? ​ ​ ​ ​
Apr
14
comment Are Euclidean domains exactly the ones which we can define “mod” on?
Side Note: ​ ​ ​ I found it non-obvious that there are any rings which non-trivially admit such modular reduction. ​ Can you come up with one before reading the answer to the question I asked about that? ​ ​ ​ ​ ​ ​ ​ ​
Apr
14
comment What happens if I repeatedly alternately normalize the rows and columns of a matrix?
Are you interpreting "its" as the [row/column]'s or as M's? ​ ​
Apr
12
revised Is there any algorithm to find Isomorphism function between two graphs?
fixed typos
Apr
11
comment Continuity of Derivative at a point.
@user1717828 : ​ ​ ​ en.wikipedia.org/wiki/Rational_numbermathworld.wolfram.com/SetDifference.html ​ ​ ​ ​ ​ ​ ​ ​
Apr
8
comment Can two 'different' vector spaces have the same vector?
One can get "arbitrary elements in common" more easily: ​ Just consider a space with dimension greater than 1, and strict subspaces containing any given vector. ​ ​ ​ ​
Apr
7
accepted Is there a non-trivial ordered ring with an “integer-esque” modulo function?
Apr
7
asked Is there a non-trivial ordered ring with an “integer-esque” modulo function?
Apr
6
comment Are Euclidean domains exactly the ones which we can define “mod” on?
@EliRose : ​ There's not necessarily a positive real one. ​ ​ ​ ​
Apr
4
comment How does one interpret statements like: “The traveling salesman problem is NP-complete?”
For that matter, your next-to-last sentence is equivalent to ​ NP = coNP , ​ since that sentence's problem is trivially in coNP: There's a shorter tour if and only if T is not optimal. ​ ​ ​ ​