Skip to main content
8 events
when toggle format what by license comment
Aug 30 at 6:50 vote accept VerMoriarty
Aug 12 at 11:50 comment added Tom Copeland For the inverse relation using operational calculus and o.g.f.s along with other common notation, see mathoverflow.net/questions/172955/… where $ST2_n(x) = \phi_n(x)$ are called the Bell polynomials (also called the Touchard / exponential / Steffensen and probably should be called the Scherk polynomials as well) and $ST1_n(x) = (x)_n = x!/(x-n)!$ are called the falling factorials.
Aug 12 at 0:36 history edited Tom Copeland CC BY-SA 4.0
A window to other important topics introduced
Aug 12 at 0:06 comment added Tom Copeland You can go the Riordan array route, but that's a baby only a pure algebraist or computer programmer can love. I prefer Riordan's and others' umbral and diff op approach.
Aug 11 at 23:44 history edited Tom Copeland CC BY-SA 4.0
Added e.g.f.s from diff ops
Aug 11 at 22:04 history edited Tom Copeland CC BY-SA 4.0
Added more differential relations
Aug 11 at 19:50 history edited Tom Copeland CC BY-SA 4.0
added 17 characters in body
Aug 11 at 19:42 history answered Tom Copeland CC BY-SA 4.0