José Hdz. Stgo.'s user avatar
José Hdz. Stgo.'s user avatar
José Hdz. Stgo.'s user avatar
José Hdz. Stgo.
  • Member for 14 years, 4 months
  • Last seen this week
56 votes
2 answers
5k views

A condition that implies commutativity

41 votes
6 answers
13k views

A question regarding a claim of V. I. Arnold

27 votes
1 answer
3k views

An anecdote by R. Schmidt

21 votes
1 answer
2k views

Reference request: a tale of two mathematicians

20 votes
2 answers
2k views

On a result attributed to W. Ljunggren and T. Nagell

20 votes
2 answers
4k views

A "couple" of questions on Gauss's mathematical diary

19 votes
4 answers
17k views

On the series 1/2 + 1/3 + 1/5 + 1/7 + 1/11 + ...

18 votes
1 answer
2k views

Points on a sphere

16 votes
5 answers
4k views

Fermat numbers and the infinitude of primes

14 votes
1 answer
4k views

What is the source of this E̶r̶d̶ő̶s̶ quote?

13 votes
2 answers
1k views

Question on the 50th (known) Mersenne prime number

11 votes
6 answers
2k views

The Wiener-Ikehara approach to the PNT

9 votes
1 answer
675 views

On the exact reference of a cute Diophantine problem

8 votes
1 answer
3k views

On order of subgroups in abelian groups

7 votes
1 answer
2k views

Prof. Murty's B. Sc. Thesis

7 votes
3 answers
560 views

Question on a crucial lemma in Euler's approach to Fermat's Last Theorem for $n=3$

6 votes
2 answers
1k views

Pages from a known textbook on Euclidean geometry?

6 votes
2 answers
680 views

Origin and variations of problem on $4xy-x-y$ being square

6 votes
4 answers
1k views

What is the name of the following categorical property?

5 votes
3 answers
1k views

Don Zagier's "Zetafunktionen und quadratische Körper"

3 votes
1 answer
478 views

Yet another question on sums of the reciprocals of the primes

3 votes
2 answers
465 views

Character sums: reference request

3 votes
1 answer
841 views

A limit involving the totient function

3 votes
2 answers
1k views

On figurate numbers

2 votes
3 answers
334 views

Gauss sums over multiplicative subgroups

2 votes
2 answers
243 views

Decomposition result for multivariate polynomial

2 votes
1 answer
383 views

Totient function inequality

2 votes
1 answer
320 views

Intuition behind the proof of key step in Minkowski's second inequality on successive minima

2 votes
1 answer
578 views

A paper by Y. Morita

2 votes
0 answers
230 views

On the cardinality of the set of right-truncatable primes