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Oct
18
comment $|A\times B|= \text{max}(|A|,|B|)$ for infinite sets
How would you apply Zorn here? The obvious partial ordering by inclusion doesn't work directly.
Oct
18
comment $|A\times B|= \text{max}(|A|,|B|)$ for infinite sets
@AsafKaragila I searched for a while and found similar questions that seemed similar but simply cited the result.
Oct
18
asked $|A\times B|= \text{max}(|A|,|B|)$ for infinite sets
Sep
30
awarded  Explainer
Sep
16
awarded  Popular Question
Sep
8
comment Best Sets of Lecture Notes and Articles
@AlexYoucis The Katok link has stopped working.
Sep
5
awarded  Yearling
Aug
16
accepted Proving the Weierstrass M-Test with topology
Aug
16
asked Proving the Weierstrass M-Test with topology
Aug
9
asked Is there a direct way of proving that all splitting fields are isomorphic?
Jul
28
comment how to show that $\mathbb{Q}[\sqrt[3]{2}]$ is a field? (by elementary means)
See here for a proof that if $a$ is algebraic, $F(a)=F[a]$.
Jul
23
comment How is $ \sum_{n=1}^{\infty}\left(\psi(\alpha n)-\log(\alpha n)+\frac{1}{2\alpha n}\right)$ when $\alpha$ is great?
You seem to have forgotten the $\pi^2$ term in the final line.
Jul
22
awarded  Nice Question
Jul
2
awarded  Curious
Jul
2
awarded  Inquisitive
Jun
28
comment Binomial Congruence
See if you can adapt this proof.
Jun
26
answered Eisenstein series is a modular form
Jun
26
revised Find the infinite sum of the series $\sum_{n=1}^\infty \frac{1}{n^2 +1}$
LaTeXed the trig.
Jun
26
answered Sums of solutions to $z^n-1 = 0$ that equal 0
Jun
23
revised Does the index of a curve determine the asymptotic behaviour of certain vector fields?
deleted 9 characters in body; edited title