Remembering Mark Sapir

Abstract

This memorial article for Mark Sapir provides a brief overview of his life and career. Among his many contributions we highlight two of his most celebrated achievements: his groundbreaking solutions to Burnside-type problems for semigroups and his innovative construction of S-machines. Additionally, reflections from his colleagues and friends offer a heartfelt tribute, blending professional insights with personal memories.

Figures (6)

• Figure 1: Mark Sapir in Vanderbilt University, 2010.
• Figure 2: From left to right: Alexander Olshanskii, Olga Sapir, Mark Sapir and Tatyana Olshanskii in Nashville TN, 2000.
• Figure 3: From left to right: (sitting) John Meakin, Andrei Kelarev, Mark Sapir and Victor Guba, (standing) Misha Volkov and Simon Goberstein, in NATO ASI, York, England 1993.
• Figure 4: Mark Sapir and Stuart Margolis in Lincoln, Nebraska, May 1993.
• Figure 5: Mark Sapir, Tanya Jajcayova and John Meakin in Lincoln, Nebraska, December 1997.