Concepts2
∑MathAdvanced
Burnside's Lemma
Burnside's Lemma says the number of distinct objects up to a symmetry group equals the average number of objects fixed by each symmetry.
#burnside's lemma#cauchy-frobenius#polya enumeration+12
∑MathAdvanced
Stirling Numbers of First Kind
Stirling numbers of the first kind count permutations by their number of cycles and connect power polynomials to rising/falling factorials.
#stirling numbers of the first kind#unsigned cycle numbers#signed stirling numbers+12