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Oct
20
revised How to visualise Bollobas' 1965 theorem?
edited body
Oct
20
revised How to visualise Bollobas' 1965 theorem?
edited title
Oct
20
asked How to visualise Bollobas' 1965 theorem?
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