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Jun
25
reviewed Close What is the smallest unknown natural number?
Jun
25
reviewed Close How would I show that $\mathbb R(u)/\mathbb R$ is a Galois extension?
Jun
25
reviewed Reviewed Two girl's ages are $20$ when added and $99$ when multiplied. What is the age of each girl?
Jun
24
comment Strehl identity for the sum of cubes of binomial coefficients
Nice. Since you don't really use change of variables etc one can get rid of all integrals and get a slightly shorter version in the language of gen. functions.
Jun
24
comment Strehl identity for the sum of cubes of binomial coefficients
Thank you, I'll take a look
Jun
23
comment Where to find Yuri Manin's “Lectures on zeta functions and motives”
mpim-bonn.mpg.de/preblob/4793
Jun
23
reviewed Close The question is x+(x÷4)=60?
Jun
20
reviewed Close Conjunction fallacy
Jun
20
reviewed Close Number theory problem of finding prime values p and q
Jun
20
reviewed Close Convergence of the series $\sum_{n\in\mathbb N}\left(\sin\frac{1}{n^n}\cdot 2^n\cdot n!\right)$
Jun
20
reviewed Close How to find $\lim_{x\to\infty} \frac{ \int_x^1 \arctan(t^2)\, dt}{x} $
Jun
20
reviewed Close Maximum value of trigonometric expression
Jun
20
answered Combinatorial Interpretation of these two identities
Jun
20
answered Alternative way to count the number of solutions to the equation $x^2 + y^2 = -1$ over $\Bbb Z /p$
Jun
20
comment Recurrence $(n+2)\text{Cat}_{n+1}=(4n+2)\text{Cat}_n$ for non-crossing matchings
Understanding is its own reward.
Jun
19
reviewed Reviewed matrix inequality proof [completion of squares]
Jun
17
comment Counting the number of solutions of equation $x^2 + y^2 = 1$ over $\Bbb Z/p$
See also an example of using Jacobi sums to count points on $y^2=x^3-x$.
Jun
17
revised Counting the number of solutions of equation $x^2 + y^2 = 1$ over $\Bbb Z/p$
P.S. about Weil etc
Jun
17
answered Counting the number of solutions of equation $x^2 + y^2 = 1$ over $\Bbb Z/p$
Jun
16
awarded  Nice Answer