Animating Nicomachus's 2000 year old mathematical gem (Mathologer Christmas video) Mathologer 2 18,9 тыс. подписчиков Скачать
3rd proof that the coefficients of (x+2)^n count the numbers of vertices, edges, etc. of an n-D cube Скачать
![Pentagramath(s) [not evil :] (xpost from Instagram)](http://i.ytimg.com/vi/w4AUOgfW9NI/mqdefault.jpg)
![Pentagramath(s) [not evil :] (xpost from Instagram)](https://i.ytimg.com/vi/w4AUOgfW9NI/mqdefault.jpg)
