$𝑞$ -factorial

For $𝑛 \in ℤ +$ , the $𝑞$ -factorial is defined by

(𝑛)! 𝑞 = 𝑛 \prod 𝑗 = 1 (𝑗) 𝑞 = \prod 𝑛 𝑗 = 1 (𝑞 𝑗 - 1) (𝑞 - 1) 𝑛

#state/tidy| #lang/en | #SemBr

𝑞-factorial