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math.RT2007
Reflection Groups and Differential Forms
Julia Hartmann, Anne V. Shepler
We study differential forms invariant under a finite reflection group over a field of arbitrary characteristic. In particular, we prove an analogue of Saito's freeness criterion fo…
math.RT2004
Jacobians of Reflection Groups
Julia Hartmann, Anne V. Shepler
Steinberg showed that when a finite reflection group acts on a real or complex vector space of finite dimension, the Jacobian determinant of a set of basic invariants factors into…