Saharon Shelah (שַׂהֲרֹן שֶׁלַח‎ Śahăron Šelaḥ, Hebrew pronunciation: [sähäʁo̞n ʃe̞läχ]; born July 3, 1945) is an Israeli mathematician. He is a professor...

Rabbi Isaiah Horowitz most influential work Ofer Shelah (born 1960), Israeli politician Saharon Shelah (born 1945), a contemporary mathematician working...

Is every abelian group A with Ext1(A, Z) = 0 a free abelian group? Saharon Shelah proved that Whitehead's problem is independent of ZFC, the standard...

HaBerit (שני לוחות הברית). In modern times, "Shelah" (שֶׁלַח) has become a surname, as exemplified by Saharon Shelah (b. 1945 Jerusalem). According to Sons...

Sauer–Shelah lemma states that every family of sets with small VC dimension consists of a small number of sets. It is named after Norbert Sauer and Saharon...

PCF theory is the name of a mathematical theory, introduced by Saharon Shelah (1978), that deals with the cofinality of the ultraproducts of ordered sets...

elementary class in first-order model theory. They were introduced by Saharon Shelah. ⟨ K , ≺ K ⟩ {\displaystyle \langle K,\prec _{K}\rangle } , for K {\displaystyle...

cardinality, then it is categorical in all uncountable cardinalities. Saharon Shelah (1974) extended Morley's theorem to uncountable languages: if the language...

in 1954. Since the 1970s, the subject has been shaped decisively by Saharon Shelah's stability theory. Compared to other areas of mathematical logic such...

consistency of a Mahlo cardinal. This theorem of Shelah answers a question of H. Friedman. In 1973, Saharon Shelah showed that the Whitehead problem ("is every...