Geodesic
Subregular characters of the unitriangular group over a finite field
Fundamentalʹnaâ i prikladnaâ matematika, Tome 13 (2007) no. 5, pp. 103-125 Cet article a éte moissonné depuis la source Math-Net.Ru

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We prove a formula for subregular characters of the unitriangular group over a finite field in terms of coefficients of minors of the characteristic matrix. 
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M. V. Ignat'ev. Subregular characters of the unitriangular group over a finite field. Fundamentalʹnaâ i prikladnaâ matematika, Tome 13 (2007) no. 5, pp. 103-125. http://geodesic.mathdoc.fr/item/FPM_2007_13_5_a3/

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