TY - JOUR AU - Thiem, Nathaniel TI - Supercharacter theories of type $A$ unipotent radicals and unipotent polytopes JO - Algebraic Combinatorics PY - 2018 SP - 23 EP - 45 VL - 1 IS - 1 PB - MathOA foundation UR - http://archive.numdam.org/articles/10.5802/alco.3/ DO - 10.5802/alco.3 LA - en ID - ALCO_2018__1_1_23_0 ER -