Михаило Петровић Алас (Београд, 6. мај 1868 — Београд, 8. јун 1943) је био српски математичар, професор Универзитета у Београду, академик Српске краљевске академије и алас.

https://sr.wikipedia.org/wiki/%D0%9C%D0%B8%D1%85%D0%B0%D0%B8%D0%BB%D0%BE_%D0%9F%D0%B5%D1%82%D1%80%D0%BE%D0%B2%D0%B8%D1%9B_%D0%90%D0%BB%D0%B0%D1%81

Mihailo Petrović Alas (Serbian Cyrillic: Михаило Петровић Алас; 6 May 1868 – 8 June 1943), was an influential Serbian mathematician and inventor. He was also a distinguished professor at Belgrade University, an academic, fisherman, writer, publicist, musician, businessman, traveler and volunteer in the First and Second World Wars. He was a student of Henri Poincaré, Charles Hermite and Charles Émile Picard. Petrović contributed significantly to the study of differential equations and phenomenology[clarification needed], as well as inventing one of the first prototypes of an analog computer.[1]

https://en.wikipedia.org/wiki/Mihailo_Petrovi%C4%87