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location Madrid, Spain
age 50
visits member for 3 years, 5 months
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Apr
5
answered Comparing sums of surds without any aids
Mar
31
answered Algorithm to find representation of an element of field extension $\mathbb{Q}(q)$ in the form $\sum a_i q^i$
Mar
16
answered Partial fraction decomposition of p'/p
Mar
15
answered Reciprocity problem in I&R “A Classical Introduction in Modern Number Theory”
Mar
14
asked Reducing simultaneously a pair of fractions $\frac{a^2}{b},\frac{ a^3}{c}$ using only gcds
Feb
13
answered $17$ is a quadratic residue for all primes $p$ such that $p \equiv \pm 3 \mod{8}$?
Dec
22
answered Generalizing Ramanujan's proof of Bertrand's Postulate: Can Ramanujan's approach be used to show a prime between $4x$ and $5x$ for $x \ge 3$
Jun
21
answered How prove that:$\varphi(2)+\varphi(3)+\varphi(4)+\cdots+\varphi(n)\ge\frac{n(n-1)}{4}+1$
Jan
19
answered $n +1$th Fibonacci number modulo $n$
Nov
30
answered Galois group and the Quaternion group
Nov
7
answered Cover a disk with thin rectangles
Nov
3
answered Half the rationals?
Oct
15
answered Tiling a minimal perimeter region with $n$ unit squares
Jul
19
answered Solving a polynomial modulo an integer
Apr
17
answered Burgess on quadratic residues and non-residues
Feb
21
answered Is it a bad idea to use a Sieve of Eratosthenes to find all primes up to very large N?
Dec
15
answered Consequence of Bertrand's Postulate
Oct
13
answered Solving for $x$ in $x^k \equiv b \pmod n$ where $n$ is not prime and $\gcd(k, \phi(n)) > 1$
Oct
12
answered Algorithm for keeping a concrete version of Euclid's argument simple
Sep
24
answered The number of ones in a binary representation of an integer