26 citations · 47 across the 5 of their papers we have counts for
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math.RT2006★ 5 cited
A classification of subsystems of a root system
Toshio Oshima
We classify isomorphic classes of the homomorphisms of a root system to a root system which do not change Cartan integers. We examine several types of isomorphic classes de…
math.RT2004★ 11 cited
Minimal polynomials and annihilators of generalized Verma modules of the scalar type
Hiroshi Oda, Toshio Oshima
Let g be a complex reductive Lie algebra and U(g) the universal enveloping algebra of g. Associated to a faithful irreducible finite dimensional representation of g, a square matri…