ALGEBRAIC COMBINATORICS

Supercharacter theories of type A unipotent radicals and unipotent polytopes
Algebraic Combinatorics, Volume 1 (2018) no. 1, p. 23-45
Even with the introduction of supercharacter theories, the representation theory of many unipotent groups remains mysterious. This paper constructs a family of supercharacter theories for normal pattern groups in a way that exhibit many of the combinatorial properties of the set partition combinatorics of the full uni-triangular groups, including combinatorial indexing sets, dimensions, and computable character formulas. Associated with these supercharacter theories is also a family of polytopes whose integer lattice points give the theories geometric underpinnings.
Received : 2017-08-15
Accepted : 2017-08-18
DOI : https://doi.org/10.5802/alco.3
Classification:  05E10,  20C33
Keywords: supercharacters, integral polytopes, finite unipotent groups, unipotent radicals 
@article{ALCO_2018__1_1_23_0,
     author = {Thiem, Nathaniel},
     title = {Supercharacter theories of type $A$ unipotent radicals and unipotent polytopes},
     journal = {Algebraic Combinatorics},
     publisher = {MathOA foundation},
     volume = {1},
     number = {1},
     year = {2018},
     pages = {23-45},
     doi = {10.5802/alco.3},
     language = {en},
     url = {http://alco.centre-mersenne.org/item/ALCO_2018__1_1_23_0}
}

Thiem, Nathaniel. Supercharacter theories of type $A$ unipotent radicals and unipotent polytopes. Algebraic Combinatorics, Volume 1 (2018) no. 1, p. 23-45. doi : 10.5802/alco.3. https://alco.centre-mersenne.org/item/ALCO_2018__1_1_23_0/

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