facing the opposite direction
relevance
- Infinite sums with respect to the first argument of the binomial coefficients (mother function) - Skol’s Wisdom Book
- This is generating function.
This page is auto-translated from /nishio/下固定の二項係数→負の二項定理 using DeepL. If you looks something interesting but the auto-translated English is not good enough to understand it, feel free to let me know at @nishio_en. I’m very happy to spread my thought to non-Japanese readers.