List questions from congruence-relations

Published on 25 Mar 2026 - 3:07

248

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Solution of the congruence $X^5 \equiv 1 \pmod {25}$ with lift

Published on 25 Mar 2026 - 3:04

147

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CEP for (distributive) lattices and groups?

Published on 25 Mar 2026 - 4:38

126

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If $(\alpha,\beta)$ is the factor pair congruences of algebra $\mathbb{A},$ ia $(\forall \gamma\in ConA)\alpha\circ\gamma=\gamma\circ\beta?$

Published on 25 Mar 2026 - 4:42

226

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Number Theory: Problem with proofs

Published on 05 Apr 2026 - 23:06

855

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Write a single congruence?

Published on 05 Apr 2026 - 16:05

68

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Show that $\equiv$ is a congruence on $M\times S$

Published on 25 Mar 2026 - 3:07

68

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Find all non-trivial congruence relations on $(\mathbb{Z},+,0,-)$.

Published on 25 Mar 2026 - 3:07

720

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multiplying and dividing in congruence

Published on 25 Mar 2026 - 3:07

589

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A discrepancy in the proof that 561 is Carmichael number.

Published on 25 Mar 2026 - 3:07

326

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A discrepancy in understanding the proof that any Carmichael number is square free.

Published on 25 Mar 2026 - 3:01

42

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An elaboration of a part in the proof of a criterion for finding Carmichael numbers.

Published on 25 Mar 2026 - 4:42

85

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Prove that $\mathbb{Z}/ \equiv 3$ has exactly three elements.

Published on 25 Mar 2026 - 4:36

210

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An elaboration of how an index formula comes from another formula.

Published on 26 Apr 2026 - 13:53

476

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How can I know the number of solutions of the following congruence $x ^ {10} \equiv 1 \pmod {2016}$?

Published on 25 Mar 2026 - 4:43

List Question

Showing $\Theta_{i}$ defined on $\prod _{i\in I}\mathcal{A}_{i}$ is a congruence relation.

Solution of the congruence $X^5 \equiv 1 \pmod {25}$ with lift

CEP for (distributive) lattices and groups?

If $(\alpha,\beta)$ is the factor pair congruences of algebra $\mathbb{A},$ ia $(\forall \gamma\in ConA)\alpha\circ\gamma=\gamma\circ\beta?$

Number Theory: Problem with proofs

Write a single congruence?

Show that $\equiv$ is a congruence on $M\times S$

Find all non-trivial congruence relations on $(\mathbb{Z},+,0,-)$.

multiplying and dividing in congruence

A discrepancy in the proof that 561 is Carmichael number.

A discrepancy in understanding the proof that any Carmichael number is square free.

An elaboration of a part in the proof of a criterion for finding Carmichael numbers.

Prove that $\mathbb{Z}/ \equiv 3$ has exactly three elements.

An elaboration of how an index formula comes from another formula.

How can I know the number of solutions of the following congruence $x ^ {10} \equiv 1 \pmod {2016}$?

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