scholdoc-texmath-0.1: tests/writers/binomial_coefficient.tex
\mathbf{C}(n,k) = \mathbf{C}_{k}^{n} = {}_{n}\mathbf{C}_{k} = \binom{n}{k} = \frac{n!}{k!\,(n - k)!}
\mathbf{C}(n,k) = \mathbf{C}_{k}^{n} = {}_{n}\mathbf{C}_{k} = \binom{n}{k} = \frac{n!}{k!\,(n - k)!}