55 citations
2 papers
astro-ph.CO2011★ 55 cited
Correlations of Quasar Optical Spectra with Radio Morphology
Amy E. Kimball, Željko Ivezić, Paul J. Wiita +1
(Abridged) With the largest homogeneous quasar sample with optical spectra and robust radio morphology classifications assembled to date, we investigate quasar radio and optical pr…
math.AT2010★ 3 cited
Model Structures on Exact Categories
James Gillespie
We define model structures on exact categories which we call exact model structures. We look at the relationship between these model structures and cotorsion pairs on the exact cat…