Ioannes Xiphilinos & Psellos polarised intellectual life in the city, & ancient chairs were revived

Summary:
Ioannes Xiphilinos and Michael Psellos polarised the intellectual world of Byzantium, the former specialising in Law and the latter in Rhetoric and Philosophy. This led to the establishment by Konstantinos IX of public chairs, presented as ancient institutions which had had fallen into disuse 
Dates:
1047 
Ioannes VIII Xiphilinos, patriarch of Constantinople (Ioannes 18)
  • He and Michael 61 divided the intellectual world of Byzantium, the former specialising in Law and the latter in Rhetoric and Philosophy, leading to the re-establishment of public chairs which had fallen into disuse (:) Psellos Xiphilinos 421
Emperor Konstantinos IX Monomachos (Konstantinos 9)
  • He was involved in the polarisation of Byzantine intellectual life around Michael 61 and Ioannes 18, and in the revival of ancient public chairs which resulted (:) Psellos Xiphilinos 421
Michael Psellos (named Konstantinos till tonsure in 1054) (Michael 61)
  • He and Ioannes 18 divided the intellectual world of Byzantium, the former specialising in Rhetoric and Philosophy and the latter in Law, leading to the re-establishment of public chairs which had fallen into disuse (:) Psellos Xiphilinos 421