Question

Is $xy$ certainly not a square in $\mathbb Z_n$ if $x$ is a square and $y$ is not?

score 61 · Answer 1 · 2022-02-20 22:19:56

61

Views

Is $xy$ certainly not a square in $\mathbb Z_n$ if $x$ is a square and $y$ is not?

Published on 20 Feb 2022 - 22:19

score 106 · Answer 2 · 2026-02-23 10:46:14

106

Views

What does "rank one" in "rank one constraint system" mean?

Published on 23 Feb 2026 - 10:46

score 107 · Answer 3 · 2022-02-24 18:00:18

107

Views

How to decrypt Turing' code version 1 as explained in MIT6.042

Published on 24 Feb 2022 - 18:00

score 55 · Answer 4 · 2022-03-15 14:20:39

55

Views

How to calculate x^3 mod n = 427

Published on 15 Mar 2022 - 14:20

score 342 · Answer 5 · 2022-03-16 17:19:14

342

Views

The encoding formula is $y=3x+21$ and it arrived at a decoding formula of $x=9y+19$ (using mod 26).

Published on 16 Mar 2022 - 17:19

score 170 · Answer 6 · 2026-02-23 15:13:24

170

Views

supersingular elliptic curve group structure

Published on 23 Feb 2026 - 15:13

score 41 · Answer 7 · 2026-03-28 06:00:59

41

Views

Choose a sitting order that is fine for all people, with privacy

Published on 28 Mar 2026 - 6:00

score 131 · Answer 8 · 2026-03-28 05:57:57

131

Views

Enigma and Rejewski's theorems (Permutation-Cycles)

Published on 28 Mar 2026 - 5:57

score 64 · Answer 9 · 2022-03-29 21:56:38

64

Views

Confusing operators in algebra for newbies

Published on 29 Mar 2022 - 21:56

score 47 · Answer 10 · 2022-04-01 02:57:14

47

Views

Can polynomial in Z[x]/(x^n-1) have non-integer coefficients?

Published on 01 Apr 2022 - 2:57

score 94 · Answer 11 · 2022-04-03 19:41:37

94

Views

Sequence $x\mapsto x^a$ cyclic in 3 directions: $s_0^{b^ic^jd^k}\bmod N$. How to find member $ijk$ if projection to 1D not possible due mixed factors

Published on 03 Apr 2022 - 19:41

score 107 · Answer 12 · 2022-04-07 17:22:08

107

Views

Construction of a recurrence sequence with given period

Published on 07 Apr 2022 - 17:22

score 44 · Answer 13 · 2022-04-08 15:51:22

44

Views

How to find $a$ in $c \equiv b^{\textstyle\alpha^{\textstyle a}} \bmod N$ with $N = (2p_sp_b+1)(2q_sq_b+1)$ and $\alpha = (2p_bq_b)^2 \bmod \phi(N)$?

Published on 08 Apr 2022 - 15:51

score 70 · Answer 14 · 2022-04-14 01:13:50

70

Views

Likelihood of 2 being a liar in Miller Rabin test for large number (e.g. 1000+ bits)

Published on 14 Apr 2022 - 1:13

score 48 · Answer 15 · 2022-04-14 03:05:04

48

Views

How many password combination at least two different letters?

Published on 14 Apr 2022 - 3:05

List Question

Is $xy$ certainly not a square in $\mathbb Z_n$ if $x$ is a square and $y$ is not?

What does "rank one" in "rank one constraint system" mean?

How to decrypt Turing' code version 1 as explained in MIT6.042

How to calculate x^3 mod n = 427

The encoding formula is $y=3x+21$ and it arrived at a decoding formula of $x=9y+19$ (using mod 26).

supersingular elliptic curve group structure

Choose a sitting order that is fine for all people, with privacy

Enigma and Rejewski's theorems (Permutation-Cycles)

Confusing operators in algebra for newbies

Can polynomial in Z[x]/(x^n-1) have non-integer coefficients?

Sequence $x\mapsto x^a$ cyclic in 3 directions: $s_0^{b^ic^jd^k}\bmod N$. How to find member $ijk$ if projection to 1D not possible due mixed factors

Construction of a recurrence sequence with given period

How to find $a$ in $c \equiv b^{\textstyle\alpha^{\textstyle a}} \bmod N$ with $N = (2p_sp_b+1)(2q_sq_b+1)$ and $\alpha = (2p_bq_b)^2 \bmod \phi(N)$?

Likelihood of 2 being a liar in Miller Rabin test for large number (e.g. 1000+ bits)

How many password combination at least two different letters?

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