List questions from binary-operations

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How to prove $A=R-\{-1\}$ and $a*b = a+b+ab $ is a binary operation?

Published on 15 Dec 2018 - 5:57

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determine whether this operation is binary

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Find the binary input function given the outputs

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A question from 1989 leningrad mathematical olympiad

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Does invertability and closure imply identity?

Published on 30 Dec 2018 - 17:56

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Known Algebraic Structure(s) by Operation and Element Characteristics

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Prove that a semigroup satisfying $a^pb^q=ba$ is commutative

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Find the binary input function given the outputs (part 2)

Published on 16 Jan 2019 - 15:58

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Series of binary operations in $(\mathbb{N}, *)$

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Why we can double elements in the table?

Published on 29 Jan 2019 - 9:41

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Do isomorphic groups share a binary operation?

Published on 30 Jan 2019 - 23:45

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Stuck in something: How to write coordinates in one number?

Published on 04 Feb 2019 - 0:02

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Encoding numbers from 0 to 255 using Huffman coding.

Published on 22 Mar 2026 - 7:10

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Subtraction With 8 Bit Integers

Published on 06 Feb 2019 - 5:31

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Find elements from xor relations

How to prove $A=R-\{-1\}$ and $a*b = a+b+ab $ is a binary operation?

determine whether this operation is binary

Find the binary input function given the outputs

A question from 1989 leningrad mathematical olympiad

Does invertability and closure imply identity?

Known Algebraic Structure(s) by Operation and Element Characteristics

Prove that a semigroup satisfying $a^pb^q=ba$ is commutative

Find the binary input function given the outputs (part 2)

Series of binary operations in $(\mathbb{N}, *)$

Why we can double elements in the table?

Do isomorphic groups share a binary operation?

Stuck in something: How to write coordinates in one number?

Encoding numbers from 0 to 255 using Huffman coding.

Subtraction With 8 Bit Integers

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