2,085 reputation
1022
bio website
location Trondheim, Norway
age 27
visits member for 4 years, 3 months
seen 2 hours ago

I fancy topology.


Jan
15
reviewed Approve Regularized least squares
Jan
14
comment Base 10 proof strategy
10^n = (-1)^(n+1) mod 11
Jan
7
answered Concrete Mathematics: Manipulation of Summation of Floor
Jan
7
comment Concrete Mathematics: Manipulation of Summation of Floor
Do you also have a ] too much? In the first sum.
Jan
7
comment Concrete Mathematics: Manipulation of Summation of Floor
What are the curly brackets?
Jan
6
reviewed Approve Minimum and maximum of an implicit function.
Dec
18
reviewed Approve Integrals and f(x)dx
Dec
18
reviewed Approve Solve Basic partial differential equation question
Dec
17
comment Is any open subset of $\mathbb{R}^{n}$ homeomorphic to $\mathbb{R}^{n}$?
Yes Can you find a homeomorphism from (a,b)?
Dec
16
awarded  Caucus
Dec
7
accepted Ring structure of $H^2(S^2 \vee S^4)$
Oct
28
awarded  Yearling
Oct
15
reviewed Edit Frobenius series method
Oct
15
revised Frobenius series method
Remove the photography
Oct
14
comment Why is $1/4$ the probability of hitting 6, starting in 0?
In any. If it goes to the left it can never hit 6. It can go to right on the first try, or loop once then go to the right, two loops go to right etc.
Oct
13
accepted Endomorphism ring of indecomposable representations
Oct
11
comment Trigonometric polynomials are dense
math.stackexchange.com/questions/381321/…
Oct
10
reviewed Approve Compute $\sum _{i=0}^n \left(\frac{i}{n}\right)^3=\frac{(n+1)^2}{4 n}$
Oct
10
reviewed Approve does a commutative diagram implies pull-back?
Oct
10
asked Endomorphism ring of indecomposable representations