On Abstract Spectral Constants. - Felix L. Schwenninger; Jens de Vries (CoRR, 2023)

The algebraic numerical range as a spectral set in Banach algebras. - Hanna Blazhko; Daniil Homza; Felix L. Schwenninger; Jens de Vries; Michal Wojtylak (CoRR, 2024)

A sharp bound for the functional calculus of ρ-contractions. - Felix L. Schwenninger; Jens de Vries (CoRR, 2024)