Zev Chonoles
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83,508
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# 83,508 Reputation

10 today
 +10 3 hours ago upvote If $g$ is a primitive root modulo $p$, then $(p-1)! \equiv g^{p(p-1)/2} \pmod{p}$
245 yesterday
 +35 18:33 3 events Ring of regular functions on a point +30 18:51 3 events “less than $+\infty$” is not bounded above? +30 16:51 3 events What does it even mean to say 'preserve structure'? +25 19:05 2 events Group theory exercise from “Rational Points on Elliptic Curves” +20 20:13 3 events According to Stewart Calculus Early Transcendentals 5th Edition on page 140, in example 5, how does he simplify this problem? +20 10:13 2 events Fermat's little theorem +20 05:03 2 events What does it mean to evaluate a polynomial at a linear map, e.g. $p(T)$ where $p(x)$ is a polynomial? +15 03:16 accept How is the Twin Primes Constant useful? What value does it provide over Brun's Constant? +10 19:50 upvote If $g$ is a primitive root modulo $p$, then $(p-1)! \equiv g^{p(p-1)/2} \pmod{p}$ +10 17:05 upvote Isomorphism between $H/H\cap N$ and $HN/N$ +10 10:06 upvote What is the unknown angle? +10 03:45 upvote Showing that a subgroup of an abelian group is normal—is this sufficient? +10 02:32 upvote Is $\pi \cdot 7$ actually $22$?
211 2 days ago
 +70 06:10 7 events Proof that $2^n-1$ does not always generate primes when primes are plugged in for $n$? +45 12:23 6 events Question about required rigour with intro real analysis text +45 06:09 4 events Thom space of unit circle +30 02:53 3 events A limit problem: $\lim\limits_{n\to\infty}\frac{1+\frac{1}{2}+\frac{1}{4}+\cdots+\frac{1}{2^n} }{1+\frac{1}{3}+\frac{1}{9}+\cdots+\frac{1}{3^n} }$ +20 15:44 5 events Why is the commutator group a subgroup? +20 05:33 2 events How can the ball reach the wall when it always has to travel halfway? +15 21:20 4 events Fermat's little theorem +15 14:31 7 events If $F(\alpha)=F(\beta)$, must $\alpha$ and $\beta$ have the same minimal polynomial? +1 08:33 2 events Example of where the sum of a subspace and its orthogonal complement is not the original vector space? 21:02 upvote An example that the supremum of a family of measurable functions need not to be measurable. 20:32 upvote What is the unknown angle? 19:20 upvote How is the Twin Primes Constant useful? What value does it provide over Brun's Constant? 19:00 upvote Turning 2D projection of edge of Möbius strip into Klein bottle 14:57 8 events Taking the square root of an imaginary number -50 18:13 bounty First representation theorem for sesquilinear forms - what is the role of the “core”?
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