6
The Pursuit of Unified Field Theory by
Einstein
and His Collaborators
6.1
Affine and mixed geometry
6.2
Further work on (metric-) affine and mixed geometry
6.3
Kaluza’s idea taken up again
6.3.1
Kaluza: Act I
6.3.2
Kaluza: Act II
6.4
Distant parallelism
6.4.1
Cartan and Einstein
6.4.2
How the word spread
6.4.3
Einstein’s research papers
6.4.4
Reactions I: Mostly critical
6.4.5
Reactions II: Further research on distant parallelism
6.4.6
Overdetermination and compatibility of systems of differential equations