Jonathan Kaye studied linguistics at Columbia University under Uriel Weinreich and Robert Austelitz, earning his Ph.D. in 1970, Uriel Weinreich (Yiddish: אוריאל ווײַנרײַך‎ "Uriel Vaynraykh", ] ; 23 May 1926 – 30 March 1967) was a Polish-American of which occupation.?