A lenticular version of a von Neumann inequality

Bernhard Beckermann (1) , Michel Crouzeix (2)

1 LPP - Laboratoire Paul Painlevé - UMR 8524
2 IRMAR - Institut de Recherche Mathématique de Rennes

We generalize to lens-shaped domains the classical von Neumann inequality for the disk.

Domaines: Analyse numérique [math.NA]

Bernhard Beckermann, Michel Crouzeix. A lenticular version of a von Neumann inequality. Archiv der Mathematik, 2006, 86 (4), pp.352-355. ⟨10.1007/s00013-005-1533-5⟩. ⟨hal-00447535⟩