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X-Table

Displays the scalar matrix of character sheaves XiX_i of the algebraic group on local systems LjL_j (or on unipotent classes uju_j), corresponding to XTable(uc, W) in GAP3/Chevie. The rows are indexed by character sheaves, labeled XϕWX^W_\phi by the character ϕ\phi of the relative Weyl group WW; the columns are local systems or unipotent classes. A Columns toggle switches between these two modes. A Y-table toggle shows the companion matrix Yi,jY_{i,j} that arises from the block-diagonal LL-matrix of the Lusztig–Shoji algorithm.