Heinrich Behmann (1891–1970) obtained his Habilitation under David Hilbert in Göttingen in 1921 with a thesis on the decision problem. In his thesis, he solved—independently of Löwenheim and Skolem's ...

Due: Assignment #4 (Lemmon p. 62, #2 (all), #5 (omit i,j,k,l), #7; p. 73, #1 (part one, omit j,k); #3 (part one).) Reading: Lemmon Section 3.3 [Also read Sections 3.1 & 3.2 if you have not already.] ...