Question

Deciding if numbers can be written as the sum of three squares

score 1.1k · Answer 1 · 2017-03-23 16:33:56

1.1k

Views

Deciding if numbers can be written as the sum of three squares

Published on 23 Mar 2017 - 16:33

score 215 · Answer 2 · 2017-04-04 19:47:58

215

Views

"the bigger RegSS, the better the estimated model performs" are we sure?

Published on 04 Apr 2017 - 19:47

score 81 · Answer 3 · 2023-02-05 07:25:20

81

Views

How to simplify a Summation within a (nested) summation: $\sum_{a=0}^{\ T/2 -1}$ $\sum_{b=2a}^{\ T-1} b*b $

Published on 05 Feb 2023 - 7:25

score 92 · Answer 4 · 2023-02-14 04:56:17

92

Views

What numbers are sums of 2 squares in $\mathbb Z/n\mathbb Z$ (modulo $n$)?

Published on 14 Feb 2023 - 4:56

score 276 · Answer 5 · 2023-03-01 05:33:58

276

Views

Proving that an integer $n = 2^{e_2} \cdot 3^{e_3} \cdots$ can be expressed as the sum of two squares iff $e_p$ is even whenever $p \equiv 3 \pmod 4$

Published on 01 Mar 2023 - 5:33

score 406 · Answer 6 · 2023-03-13 16:46:07

406

Views

Parametrization of integer solutions of the equation $a^2+b^2=c^2+d^2=2x^2$

Published on 13 Mar 2023 - 16:46

score 148 · Answer 7 · 2023-03-13 20:51:44

148

Views

How can I generate solutions to the Diophantine equation: $a^2 + b^2 + 2c^2 = d^2$

Published on 13 Mar 2023 - 20:51

score 120 · Answer 8 · 2023-03-14 12:26:21

120

Views

How many ways are there to write $173$ as a sum of squares?

Published on 14 Mar 2023 - 12:26

score 103 · Answer 9 · 2026-03-26 06:28:37

103

Views

Write $7 \cdot 10^{100} + 7$ as a sum of four squares

Published on 26 Mar 2026 - 6:28

score 455 · Answer 10 · 2023-03-17 18:27:10

455

Views

Is there a hidden relation between the sum of squares and the factorial?

Published on 17 Mar 2023 - 18:27

score 67 · Answer 11 · 2023-03-22 09:05:19

67

Views

Asymptotic of $\sum_{0<|n = (n_1,n_2) |\leq \mu} \big(|n|^{-2\beta} - \mu^{-2\beta}\big)^{\frac12}$

Published on 22 Mar 2023 - 9:05

score 73 · Answer 12 · 2023-03-30 08:01:53

73

Views

Simplifying square of partial sums to sum of squares and products

Published on 30 Mar 2023 - 8:01

score 66 · Answer 13 · 2026-02-23 15:18:03

66

Views

An Algebraic Understanding of Degrees of Freedom

Published on 23 Feb 2026 - 15:18

score 119 · Answer 14 · 2023-05-02 08:02:04

119

Views

For how many numbers $1\le k\le n$ does there exist $a$, $b\in\Bbb Z$, so that $k=a^2+b^2$?

Published on 02 May 2023 - 8:02

score 94 · Answer 15 · 2026-03-27 11:47:47

94

Views

When can a sum over the sum of squares function be replaced by an integral?

Published on 27 Mar 2026 - 11:47

List Question

Deciding if numbers can be written as the sum of three squares

"the bigger RegSS, the better the estimated model performs" are we sure?

How to simplify a Summation within a (nested) summation: $\sum_{a=0}^{\ T/2 -1}$ $\sum_{b=2a}^{\ T-1} b*b $

What numbers are sums of 2 squares in $\mathbb Z/n\mathbb Z$ (modulo $n$)?

Proving that an integer $n = 2^{e_2} \cdot 3^{e_3} \cdots$ can be expressed as the sum of two squares iff $e_p$ is even whenever $p \equiv 3 \pmod 4$

Parametrization of integer solutions of the equation $a^2+b^2=c^2+d^2=2x^2$

How can I generate solutions to the Diophantine equation: $a^2 + b^2 + 2c^2 = d^2$

How many ways are there to write $173$ as a sum of squares?

Write $7 \cdot 10^{100} + 7$ as a sum of four squares

Is there a hidden relation between the sum of squares and the factorial?

Asymptotic of $\sum_{0<|n = (n_1,n_2) |\leq \mu} \big(|n|^{-2\beta} - \mu^{-2\beta}\big)^{\frac12}$

Simplifying square of partial sums to sum of squares and products

An Algebraic Understanding of Degrees of Freedom

For how many numbers $1\le k\le n$ does there exist $a$, $b\in\Bbb Z$, so that $k=a^2+b^2$?

When can a sum over the sum of squares function be replaced by an integral?

Trending Questions

Popular # Hahtags

Popular Questions