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Lehs
  • Member for 9 years, 7 months
  • Last seen more than a month ago
37 votes
13 answers
4k views

Continuous relations?

0 votes
1 answer
689 views

A soft question on the ABC conjecture

1 vote
0 answers
122 views

Testing polynomials irreducible over the integers

3 votes
1 answer
469 views

Integer valued polynomials over several variables

0 votes
1 answer
603 views

The difference between two coprime semiprimes

5 votes
0 answers
237 views

The set of numbers $a+b$ such that $ma^2+nb^2$ is prime

1 vote
0 answers
140 views

Primes dividing functions defined by linear recurrence relations with constant coefficients

1 vote
1 answer
230 views

An estimation of $p_n$

1 vote
1 answer
437 views

A morphism-revealing category? [closed]

2 votes
1 answer
215 views

Primes and the factorial

2 votes
0 answers
111 views

Quasigroups extracted from the rational numbers and division

2 votes
2 answers
640 views

Categories with binary relations as objects

0 votes
1 answer
282 views

Is any axiom system for sets categorical? [closed]