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JOURNALS // Sibirskii Matematicheskii Zhurnal // Archive

Sibirsk. Mat. Zh., 2018 Volume 59, Number 2, Pages 369–377 (Mi smj2979)

This article is cited in 4 papers

Contribution to the general linear conjugation problem for a piecewise analytic vector

S. N. Kiyasov

Institute of Mathematics and Mechanics, Kazan (Volga Region) Federal University, Kazan, Russia

Abstract: Establishing an analogy between the theories of Riemann–Hilbert vector problem and linear ODEs, for the $n$-dimensional homogeneous linear conjugation problem on a simple smooth closed contour $\Gamma$ partitioning the complex plane into two domains $D^+$ and $D^-$ we show that if we know $n-1$ particular solutions such that the determinant of the size $n-1$ matrix of their components omitting those with index $k$ is nonvanishing on $D^+\cup\Gamma$ and the determinant of the matrix of their components omitting those with index $j$ is nonvanishing on $\Gamma\cup D^-\setminus\{\infty\}$, where $k,j=\overline{1,n}$, then the canonical system of solutions to the linear conjugation problem can be constructed in closed form.

Keywords: matrix function, linear conjugation problem, factorization.

UDC: 517.544

MSC: 35R30

Received: 13.04.2017

DOI: 10.17377/smzh.2018.59.212


 English version:
Siberian Mathematical Journal, 2018, 59:2, 288–294

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© Steklov Math. Inst. of RAS, 2024