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15
122
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Solve factorial equal to product of other factorials, $a! = b! \times 5! \times 3!$

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#elementary-number-theory #factorial
27
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Removing first factor of q-pochammer

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#factorial #gamma-function #pochhammer-symbol
19
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Correct approach on log(n+m+z)!

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#summation #logarithms #factorial
94
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Find the value or prove that it's impossible

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#combinatorics #number-theory #factorial
70
Views

Completing the summation equality with the example $\sum_{n=2}^{\infty} \sum_{m=1}^n \frac{\prod_{i=0}^n(i+2)}{n+m}$

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#sequences-and-series #summation #factorial #infinite-product
355
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Why is the following limit not 1?

Published on
#limits #approximation #factorial
205
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Approximation of gamma function via Riemann sums at integer points

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#combinatorics #number-theory #approximation #factorial #gamma-function
122
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A nested double sum(to do with e?)

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#summation #factorial #convolution #exponential-sum
33
Views

Seeking Clarification on Proof for P(n, n) = P(n, n-1) Equality

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#algebra-precalculus #solution-verification #factorial
126
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Show that there are infinitely many $a\in\mathbb{N}$ such that $a!+(a+2)!$ divides $(a+2\lfloor{\sqrt{a}}\rfloor)!$.

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#elementary-number-theory #contest-math #divisibility #factorial
98
Views

Prove a certain equation

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#summation #factorial #gamma-function
235
Views

Proof that the two sums are equal - the glass ball problem.

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#summation #combinations #binomial-coefficients #factorial #combinatorial-proofs
78
Views

Is the factorial of any number equal to zero?

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#factorial
25
Views

Counting Paths in the XY Plane (Discrete math)

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#combinatorics #permutations #algorithms #factorial #catalan-numbers
167
Views

Sum of Hermite polynomials

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#summation #factorial #hermite-polynomials

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