Chen Chung Chang

C. C. Chang
Born1927
Tianjin, China
DiedJuly 17, 2014 (aged 86 or 87)
Santa Clarita, California
Known forChang's conjecture
Scientific career
FieldsMathematics
InstitutionsUniversity of California, Los Angeles
Doctoral advisorAlfred Tarski

Chen Chung Chang (Chinese: 张晨钟) was a mathematician who worked in model theory. He obtained his PhD from Berkeley in 1955 on "Cardinal and Ordinal Factorization of Relation Types" under Alfred Tarski. He wrote the standard text Chang & Keisler (1990) on model theory. Chang's conjecture and Chang's model are named after him. He also proved the ordinal partition theorem (expressed in the arrow notation for Ramsey theory) ωω→(ωω,3)2, originally a problem of Erdős and Hajnal. He also introduced MV-algebras as models for Łukasiewicz logic. Chang was a professor at the mathematics department of the University of California, Los Angeles.