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15
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Proof. Divisibility number theory

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#elementary-number-theory #divisibility #gcd-and-lcm
668
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Find $\operatorname{lcm}(2n-1,2n+1)$

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#elementary-number-theory #gcd-and-lcm #euclidean-algorithm #least-common-multiple
481
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A combinatoric $gcd$ problem

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#combinatorics #number-theory #gcd-and-lcm
102
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Number of proper divisors $d_1 < \cdots < d_j$ of $n$ such that $\gcd(d_1, \ldots, d_j) = d$

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#combinatorics #number-theory #analytic-number-theory #gcd-and-lcm #mobius-inversion
434
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Greatest common divisor of real analytic functions

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#real-analysis #reference-request #analyticity #gcd-and-lcm
40
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Simple Common Factor query

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#gcd-and-lcm
181
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Minimum sum of the numbers added to elements of a set to meet the condition(mentioned below)?

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#number-theory #gcd-and-lcm
139
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Finding a summation involving gcd

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#number-theory #summation #totient-function #gcd-and-lcm
745
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Prove a set of nonnegative integers with greatest common divisor 1 and closed under addition has all but finite many nonnegative integers.

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#number-theory #gcd-and-lcm
113
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If $a$ and $b$ are coprime then $7a+3b$ and $2a-b$ are also coprime

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#elementary-number-theory #gcd-and-lcm
197
Views

Definition of gcd for a polynomial and $\gcd(3,x) = 1$

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#abstract-algebra #polynomials #ring-theory #gcd-and-lcm
266
Views

Extended Euclidean Algorithm (the going backwards step) and modular inverses

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#number-theory #modular-arithmetic #gcd-and-lcm #euclidean-algorithm
769
Views

Calculate 67−1 (mod 119) and use this to calculate 43/67 (mod 119). Euclidean GCD algorithm

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#number-theory #gcd-and-lcm
258
Views

Is it correct? Prove that any fraction can be reduced

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#proof-verification #fractions #prime-factorization #gcd-and-lcm
513
Views

Greatest Common Divisor of natural numbers

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#arithmetic #gcd-and-lcm

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