Expansion of $k$-Schur functions for maximal $k$-rectangles within the   affine nilCoxeter algebra
  We give several explicit combinatorial formulas for the expansion of k-Schur functions indexed by maximal rectangles in terms of the standard basis of the affine nilCoxeter algebra. Using our result, we also show a commutation relation of k-Schur functions corresponding to rectangles with the generators of the affine nilCoxeter algebra. 
Chris Berg, Nantel Bergeron, Hugh Thomas, Mike Zabrocki
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