A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

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created 4 hours ago
created Apr 22 at 0:32
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created Apr 17 at 13:10
created Apr 15 at 9:24
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For questions on rationalising the denominator, the operation of rewriting a fraction in such a way that the denominator is free of square roots, cube roots, etc. The fraction can be a real number inv…
created Apr 12 at 14:24
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created Apr 12 at 11:48
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created Apr 12 at 11:14
created Apr 11 at 10:25
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The greatest common divisor of two or more integers is the largest integer that divides all of them (if it exists).
created Apr 9 at 12:17
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created Apr 9 at 7:58
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For questions on determining whether a number is rational, and related problems. If applicable, use this tag instead of (rational-numbers) and (irrational-numbers). Consider adding a tag (radicals) or…
created Apr 9 at 7:11
created Apr 9 at 4:29
created Apr 4 at 8:26
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Infinite descent, also named Fermat's descent, is a technique to prove that a diophantine equation has no solutions by construction a 'smaller' solution from a given one.
created Apr 3 at 11:29
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a grouplike structure $(Q, \ast)$, that satisfies the Latin square property but need not have an identity element, nor need it be associative. It coincides with the notion of a divisib…
created Apr 2 at 6:31
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Questions about linear diophantine equations.
created Mar 26 at 22:52
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For questions about the uses of the Euclidean algorithm, Extended Euclidean algorithm, and related algorithms in integers, polynomials, or general Euclidean domains. This is **not** about Euclidean ge…
created Mar 25 at 17:29
created Mar 24 at 10:33
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Questions on quadratic variations of stochastic processes. (Not to be confused with functions of bounded variation.)
created Mar 23 at 15:44
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For questions about congruence relations, equivalence relations on an algebraic structure that are compatible with the structure.
created Mar 22 at 12:48
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For questions about congruent matrices.
created Mar 22 at 12:47
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Questions about congruences where the modulus is a polynomial. For questions concerning congruences between polynomials where the modulus is an integer, use the tag (modular-arithmetic) instead.
created Mar 22 at 11:55
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For questions about congruent geometric figures, e.g., determining whether one figure is congruent to another.
created Mar 22 at 10:57
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created Mar 21 at 5:59
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created Mar 20 at 21:58
created Mar 19 at 15:55
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created Mar 18 at 12:09
created Mar 17 at 10:12
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created Mar 14 at 13:44