1,741 reputation
711
bio website
location Madrid, Spain
age 51
visits member for 3 years, 8 months
seen 5 hours ago

Apr
6
revised Comparing sums of surds without any aids
added 53 characters in body
Mar
31
revised Algorithm to find representation of an element of field extension $\mathbb{Q}(q)$ in the form $\sum a_i q^i$
added 125 characters in body
Mar
16
revised Partial fraction decomposition of p'/p
Removed the c
Mar
14
revised Reducing simultaneously a pair of fractions $\frac{a^2}{b},\frac{ a^3}{c}$ using only gcds
EDIT: Changed to make more clear the question.
Mar
14
revised Reducing simultaneously a pair of fractions $\frac{a^2}{b},\frac{ a^3}{c}$ using only gcds
Sorry the method I give is not correct
Dec
22
revised Generalizing Ramanujan's proof of Bertrand's Postulate: Can Ramanujan's approach be used to show a prime between $4x$ and $5x$ for $x \ge 3$
minor edit
Jun
21
revised How prove that:$\varphi(2)+\varphi(3)+\varphi(4)+\cdots+\varphi(n)\ge\frac{n(n-1)}{4}+1$
I have rewritten the proof as the original was very confusing and contained some incorrect statements.
Jun
21
revised How prove that:$\varphi(2)+\varphi(3)+\varphi(4)+\cdots+\varphi(n)\ge\frac{n(n-1)}{4}+1$
deleted 2 characters in body
Dec
1
revised Galois group and the Quaternion group
added 1 characters in body
Dec
1
revised Galois group and the Quaternion group
Added explanation
Nov
3
revised Half the rationals?
Added a generalization
Oct
15
revised Tiling a minimal perimeter region with $n$ unit squares
Sketch of proof
Apr
19
revised Burgess on quadratic residues and non-residues
edited body
Apr
19
revised Burgess on quadratic residues and non-residues
added 1406 characters in body
Apr
17
revised Burgess on quadratic residues and non-residues
correction
Feb
21
revised Is it a bad idea to use a Sieve of Eratosthenes to find all primes up to very large N?
added 1962 characters in body
Feb
21
revised Is it a bad idea to use a Sieve of Eratosthenes to find all primes up to very large N?
added 1962 characters in body
Dec
19
revised Consequence of Bertrand's Postulate
Correction of an error in the argument
Dec
15
revised Consequence of Bertrand's Postulate
Clarification of the argument.
Jun
20
revised Finding the integer $\le n$ with largest number of divisors
added 11 characters in body