General runner removal and the Mullineux map
Abstract
We prove a new `runner removal theorem' for q-decomposition numbers of the level 1 Fock space of type A(1)e-1, generalising earlier theorems of James--Mathas and the author. By combining this with another theorem relating to the Mullineux map, we show that the problem of finding all q-decomposition numbers indexed by partitions of a given weight is a finite computation.
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