Foreword to Volume 30, Number 2–4

doi:10.68381/jca30023

DOI: 10.68381/jca30023 ISSN: 0944-6532

Foreword to Volume 30, Number 2–4

Tim Hoheisel, Johannes O. Royset

Volume 30 (2023), Number 2–4, are special issues dedicated to Prof. Roger J-B Wets on the occasion of his 85th birthday. We give an overview of the scientific life of Prof. Wets.

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