harajm
  • Member for 9 years, 2 months
  • Last seen more than 3 years ago
5 answers
16 votes
19k views
10 bookmarks
Is it true that the unit ball is compact in a normed linear space iff the space is finite-dimensional?
2 answers
12 votes
2k views
3 bookmarks
$K[x_1, x_2,\dots ]$ is a UFD
2 answers
11 votes
4k views
1 bookmarks
Unit ball in $C[0,1]$ not sequentially compact
2 answers
9 votes
2k views
5 bookmarks
Why are distinct maximal ideals coprime?
1 answers
7 votes
2k views
10 bookmarks
Smooth chart in what sense?
3 answers
7 votes
1k views
1 bookmarks
$|f|$ constant implies $f$ constant?
4 answers
7 votes
3k views
1 bookmarks
Noetherian module implies Noetherian ring?
1 answers
6 votes
674 views
1 bookmarks
One to one correspondence of ideals in $R$ and $S^{-1}R$?
3 answers
5 votes
519 views
3 bookmarks
Why is $\mathbb{Z}[\alpha ]$ not finitely generated as $\mathbb{Z}$-module?
1 answers
5 votes
969 views
principal curvature of the flat torus
1 answers
5 votes
1k views
4 bookmarks
Irreducible ideal implies prime ideal in Dedekind Domains?
1 answers
5 votes
74 views
$S/I$ is an integral extension of $R/R\cap I$
2 answers
5 votes
91 views
Is this a correct question?
0 answers
5 votes
1k views
1 bookmarks
Structure theorem of finitely generated modules over a PID
1 answers
4 votes
93 views
3 bookmarks
equivalent definitions of tensorfields
1 answers
4 votes
4k views
3 bookmarks
Any two norms equivalent on a finite dimensional norm linear space.
1 answers
4 votes
607 views
1 bookmarks
Residue fields of gaussian primes
2 answers
4 votes
397 views
3 questions on field extensions
1 answers
4 votes
509 views
2 bookmarks
Splitting field for $x^n+a$
1 answers
4 votes
4k views
Lebesgue Convergence Theorem
2 answers
3 votes
62 views
$\lim \limits_{t \to a} \int_{c}^{d} f(t, s) ds= \int_{c}^{d} \lim \limits_{t \to a} f(t,s) ds$?
1 answers
3 votes
434 views
Small contractions as blow ups
0 answers
3 votes
453 views
Why is character sum of eigenvalues?
1 answers
3 votes
204 views
The dual space as finite dimensional subspace
1 answers
3 votes
181 views
2 bookmarks
Why don't I end up with the same splitting field?
1 answers
3 votes
318 views
1 bookmarks
Irredundant primary decomposition of a submodule transferred to irredundant primary decomposition of an ideal
1 answers
3 votes
142 views
Why, when considering prime ideals in the set $(\mathfrak a:x)$ $(x\in A)$ we may assume $\mathfrak a=0$?
2 answers
3 votes
88 views
A-module as an A/a-module
1 answers
2 votes
2k views
1 bookmarks
linear map of bounded sets into bounded sets implies a bounded operator
0 answers
2 votes
280 views
Krull dimension $\leq$ transcendental degree