Question

Count the size of $|\{(b_1, \dots, b_n): (-1)^{b_1} a_1 + \cdots + (-1)^{b_n} a_n =0, b_i \in \{0,1\} \}|$ in $O(n)$ way

score 47 · Answer 1 · 2026-04-15 22:53:02

47

Views

Count the size of $|\{(b_1, \dots, b_n): (-1)^{b_1} a_1 + \cdots + (-1)^{b_n} a_n =0, b_i \in \{0,1\} \}|$ in $O(n)$ way

Published on 15 Apr 2026 - 22:53

score 286 · Answer 2 · 2026-05-10 13:51:00

286

Views

The set of the form $ m+n\sqrt{-3} $, $ m, n\in\mathbb Z $ or $ m, n $ are both halves of odd integers is a Euclidean domain

Published on 10 May 2026 - 13:51

score 80 · Answer 3 · 2026-04-12 01:27:58

80

Views

Number theory: Unit group of ring of integer of number field

Published on 12 Apr 2026 - 1:27

score 321 · Answer 4 · 2026-04-16 06:11:22

321

Views

Integer solutions to $x^3+y^3+z^3=29$

Published on 16 Apr 2026 - 6:11

score 61 · Answer 5 · 2026-05-16 04:57:21

61

Views

A question about quadratic non-residues in finite fields.

Published on 16 May 2026 - 4:57

score 145 · Answer 6 · 2026-04-12 10:41:08

145

Views

Fermat's Last Theorem solved through induction on $z$, not on $n$

Published on 12 Apr 2026 - 10:41

score 327 · Answer 7 · 2026-04-10 12:57:22

327

Views

How to apply CRT to a congruence system with moduli not coprime?

Published on 10 Apr 2026 - 12:57

score 82 · Answer 8 · 2026-05-10 12:34:31

82

Views

$n\in \mathbf{N}$ such that a solution of $X^4+nX^2 +1$ is a root of unit

Published on 10 May 2026 - 12:34

score 692 · Answer 9 · 2026-04-16 22:50:22

692

Views

Find a Cauchy sequence that doesn't $p$-converge to any rational number.

Published on 16 Apr 2026 - 22:50

score 82 · Answer 10 · 2026-04-16 01:34:36

82

Views

Fractions with denominator $41$ leading to a recurring decimal number with period $24390$

Published on 16 Apr 2026 - 1:34

score 1.4k · Answer 11 · 2026-04-18 04:49:31

1.4k

Views

Asymptotic approximation regarding the Gamma function $\Gamma$.

Published on 18 Apr 2026 - 4:49

score 253 · Answer 12 · 2026-05-10 14:03:57

253

Views

A question about Galois characters

Published on 10 May 2026 - 14:03

score 42 · Answer 13 · 2026-05-14 15:37:10

42

Views

Jacobi sums Gaussian Sum. Show $J(\rho^{'},\chi^{'}) = (- J(\rho,\chi))^s$

Published on 14 May 2026 - 15:37

score 95 · Answer 14 · 2026-05-15 01:55:17

95

Views

The definition of polar density of a set of primes in a number field

Published on 15 May 2026 - 1:55

score 54 · Answer 15 · 2026-04-12 04:15:34

54

Views

Sums of first $n$ $k$th powers which are perfect powers (as polynomials in $n$)

Published on 12 Apr 2026 - 4:15

List Question

Count the size of $|\{(b_1, \dots, b_n): (-1)^{b_1} a_1 + \cdots + (-1)^{b_n} a_n =0, b_i \in \{0,1\} \}|$ in $O(n)$ way

The set of the form $ m+n\sqrt{-3} $, $ m, n\in\mathbb Z $ or $ m, n $ are both halves of odd integers is a Euclidean domain

Number theory: Unit group of ring of integer of number field

Integer solutions to $x^3+y^3+z^3=29$

A question about quadratic non-residues in finite fields.

Fermat's Last Theorem solved through induction on $z$, not on $n$

How to apply CRT to a congruence system with moduli not coprime?

$n\in \mathbf{N}$ such that a solution of $X^4+nX^2 +1$ is a root of unit

Find a Cauchy sequence that doesn't $p$-converge to any rational number.

Fractions with denominator $41$ leading to a recurring decimal number with period $24390$

Asymptotic approximation regarding the Gamma function $\Gamma$.

A question about Galois characters

Jacobi sums Gaussian Sum. Show $J(\rho^{'},\chi^{'}) = (- J(\rho,\chi))^s$

The definition of polar density of a set of primes in a number field

Sums of first $n$ $k$th powers which are perfect powers (as polynomials in $n$)

Trending Questions

Popular # Hahtags

Popular Questions