H. Hartmann

collaborators

2 papers

math.CO2026

Discrete FaÃ di Bruno via MÃ¶bius Inversion

Heinrich Hartmann

We approach discrete and differential FaÃ di Bruno formulas from a MÃ¶bius inversion angle. On the Boolean cube, Newton's discrete Taylor formula and the definition of iterated for…

math.GM2026

FaÃ di Bruno is Taylor Composition

Heinrich Hartmann

We approach FaÃ di Bruno as a composition theorem for Taylor polynomials. For $C^{k}$ maps $I ¨ : E \to F$ and $I ¨ : F \to G$ between Banach spaces, let $T_{*}^{k} (I ¨ ; x)$ denote the red…