Question

How do you find the squares mod 23?

score 1.9k · Answer 1 · 2016-03-12 22:02:32

1.9k

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How do you find the squares mod 23?

Published on 12 Mar 2016 - 22:02

score 234 · Answer 2 · 2016-03-14 00:21:19

234

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infinitely many perfect squares in $\{2n^2+kn+l\colon n\in\mathbb{N}\}$

Published on 14 Mar 2016 - 0:21

score 456 · Answer 3 · 2026-03-29 07:37:27

456

Views

What is the proof for $\sqrt{-a}\times\sqrt{-b}\neq\sqrt{ab},\text{ where }a,b\in \mathbb{R}$

Published on 29 Mar 2026 - 7:37

score 187 · Answer 4 · 2016-03-16 18:46:20

187

Views

Generalize finding perfect squares by adding odd numbers

Published on 16 Mar 2016 - 18:46

score 223 · Answer 5 · 2026-03-28 21:26:47

223

Views

Write $x_n=22..244...45$ as sum of $2$ squares

Published on 28 Mar 2026 - 21:26

score 7.5k · Answer 6 · 2026-03-26 22:19:37

7.5k

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Could a square be a perfect number?

Published on 26 Mar 2026 - 22:19

score 163 · Answer 7 · 2016-03-17 18:43:49

163

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$(x+1)^2 + (y+1)^2 + xy(x+y+3)=2$

Published on 17 Mar 2016 - 18:43

score 1.5k · Answer 8 · 2016-03-18 01:46:48

1.5k

Views

Number of N-digit Perfect Squares

Published on 18 Mar 2016 - 1:46

score 458 · Answer 9 · 2016-03-18 04:55:06

458

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If a, b, c are three natural numbers with $\gcd(a,b,c) = 1$ such that $\frac{1}{a}+\frac{1}{b}=\frac{1}{c}$ then show that $a+b$ is a square.

Published on 18 Mar 2016 - 4:55

score 475 · Answer 10 · 2016-03-18 14:25:10

475

Views

Distribution of squared multivariate normal random variable

Published on 18 Mar 2016 - 14:25

score 54 · Answer 11 · 2016-03-20 15:56:47

54

Views

How can I make a square from these terms?

Published on 20 Mar 2016 - 15:56

score 807 · Answer 12 · 2026-03-28 21:34:13

807

Views

Prove that there are arbitrarily long sequences of consecutive integers, none of which can be written as the sum of two perfect squares.

Published on 28 Mar 2026 - 21:34

score 151 · Answer 13 · 2016-03-27 17:42:01

151

Views

When will the sequence $k \mapsto A + Bk + k^2$ yield a perfect square?

Published on 27 Mar 2016 - 17:42

score 1.9k · Answer 14 · 2026-03-28 21:34:15

1.9k

Views

What is the relation between the square root of the sum of squares and the sum of the absolute values?

Published on 28 Mar 2026 - 21:34

score 581 · Answer 15 · 2016-03-28 19:28:44

581

Views

Find all positive integers n such that $2^2 + 2^5+ 2^n$ is a perfect square.

Published on 28 Mar 2016 - 19:28

List Question

How do you find the squares mod 23?

infinitely many perfect squares in $\{2n^2+kn+l\colon n\in\mathbb{N}\}$

What is the proof for $\sqrt{-a}\times\sqrt{-b}\neq\sqrt{ab},\text{ where }a,b\in \mathbb{R}$

Generalize finding perfect squares by adding odd numbers

Write $x_n=22..244...45$ as sum of $2$ squares

Could a square be a perfect number?

$(x+1)^2 + (y+1)^2 + xy(x+y+3)=2$

Number of N-digit Perfect Squares

If a, b, c are three natural numbers with $\gcd(a,b,c) = 1$ such that $\frac{1}{a}+\frac{1}{b}=\frac{1}{c}$ then show that $a+b$ is a square.

Distribution of squared multivariate normal random variable

How can I make a square from these terms?

Prove that there are arbitrarily long sequences of consecutive integers, none of which can be written as the sum of two perfect squares.

When will the sequence $k \mapsto A + Bk + k^2$ yield a perfect square?

What is the relation between the square root of the sum of squares and the sum of the absolute values?

Find all positive integers n such that $2^2 + 2^5+ 2^n$ is a perfect square.

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