Department of Mathematics

Raymond Hoobler

Email

rhoobler@ccny.cuny.edu

Office

NAC 6/203A

Office hours

Upon request

Office phone

(212) 650-5155

My research interests are in algebraic geometry, the study of sets of zeros of polynomial equations. Much of my work has dealt with Brauer groups and etale cohomology. I am particularly interested in characteristic p > 0. Since I retired I have become interested in differential algebra and, in particular, to introducing the language of schemes and Grothendieck topologies to differential algebraic geometry.

Teaching

Documents

• Euclid I-III- IV.pdf : Here are the definitions, axioms and propositions in Euclid's Geometry, Books I, III, and IV
• Grothendieck Approach to Differential Azumaya Algebras
• Semi stable bundles and Witt rings of schemes

Publications:

• Raymond Hoobler: Cohomology of Differential Schemes, preprint. Abstract
• Raymond Hoobler: The Differential Brauer Group, preprint. Abstract
• Roozbeh Hazrat and Raymond Hoobler: K-Theory of Azumaya Algebras over Schemes, preprint. Abstract
• Raymond Hoobler: The Merkuriev Suslin Theorem for any semi-local ring, Journal of Pure and Applied Algebra. Abstract
• Raymond Hoobler: Semi stable bundles and Witt rings of schemes, preprint. Abstract