What is the reverse operation of a factorial?
68235
Is there a way to solve for an unknown in a factorial?
25959
How do you compute negative numbers to fractional powers?
97534
Ruby factorial function
73102
Given the factors of $N$, is there a method for computing the factors of $N-1$ or $N+1$?
85072
A "reverse" diagonal argument?
21254
Formal language: Proving the reverse operation on a word through induction
43499
Repeatedly taking differences on a polynomial yields the factorial of its degree?
5241
Best way to reverse a string
155150
Division of Factorials [binomal coefficients are integers]
146355
Can I convert a reverse iterator to a forward iterator?
33057
The inverse is a root of the reciprocal (reverse) polynomial.
109131
Find limit with factorial
45498
Building a hard to factor number without knowing its factorization
125106
Reversing a GroupBy operation
120913
How would you write a non-recursive algorithm to calculate factorials?
91538
What are the rules for factorial manipulation?
36920
Universal factoring method or list of methods (trinomials)