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JOURNALS // Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy // Archive

Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2020 Volume 7, Issue 1, Pages 85–90 (Mi vspua206)

MATHEMATICS

On a Nesbitt - Carlitz determinant

K. I. Pimenov

St. Petersburg State University, 7-9, Universitetskaya nab., St. Petersburg, 199034, Russian Federation

Abstract: A matrix whose component are binomial coefficients and determinant was calculated earlier by L. Carlitz is investigated. It is shown that Carlitz matrix is the result of binomal specialization for dual Jacobi - Trudi determinant presentation of certain Schur function. It leads to another way to calculate Carlitz determinant based upon symmetric function theory. The eigenvalues of Carlitz matrix are shown to be powers of two as well. In order to calculate these eigenvalues the author uses suitable linear operator on the space of polynomials whose degree does not exceed given number. It is shown that in suitable basis matrix of that linear operator has triangular form with powers of two on its diagonal. Main result is generalised from quadratic to cubic case corresponding to a certain matrix, consisted of trinomial coefficients.

Keywords: linear algebra, binomial coefficients, symmetric functions, matrix eigenvalues.

UDC: 512.643

MSC: 15A15, 15A18, 05E05

Received: 20.07.2019
Revised: 15.09.2019
Accepted: 19.09.2019

DOI: 10.21638/11701/spbu01.2020.109


 English version:
Vestnik St. Petersburg University, Mathematics, 2020, 7:1, 64–67


© Steklov Math. Inst. of RAS, 2026