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Maestro13
  • Member for 9 years, 10 months
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7 votes
2 answers
377 views

$x^2-(p^4-16)y^2=p^2 \land x \mod (p^2-4) =2 \land x >0 \implies p | x,y$?

4 votes
3 answers
150 views

$x^2+y^2=z(4z+1)$ solutions

4 votes
1 answer
141 views

When is $n\cdot m\cdot [(n-8)\cdot m+4]-4$ an integer square?

3 votes
3 answers
318 views

Continued fraction for $\sqrt{D}$ upper bound of cycle length

3 votes
2 answers
164 views

Can a factor of $x^2+4$ for odd $x$ be $\equiv 3\mod 4$?

3 votes
1 answer
110 views

Solve $x^2+(8y)^2=p^2(4p^2y^2+1)$

2 votes
1 answer
46 views

Root of -1, multiple of 4 has to lie in first half?

2 votes
1 answer
463 views

Solutions for $65x^2-57y^2=8 \cdot 61$

2 votes
1 answer
320 views

Which subgroup of $\mathrm{SL}(2,\mathbb{C})$ is this?

1 vote
0 answers
70 views

Does this subgroup of $\mathrm{SL}(2,\mathbb{C})$ have a a name?

1 vote
3 answers
475 views

What is the value of $\sum_{n=0}^{\infty}(-\frac{1}{8})^n\binom{2n}{n}$

0 votes
1 answer
306 views

Quadratic residue equal to -1 for product of primes $ \equiv 1 \mod 4$

0 votes
3 answers
220 views

$x^2-Dy^2=-1$ when D is square-free and has only prime divisors $\equiv 1 \mod 4$

0 votes
1 answer
52 views

$-1$ is a quadratic residue modulo $8n+2$; what can be stated about $n$?