Zap. Nauchn. Sem. POMI, 2005, Volume 323

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JOURNALS // Zapiski Nauchnykh Seminarov POMI // Archive

2005, Volume 323

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General information

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Contents

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Computational methods and algorithms. Part XVIII

	Unitary similarity of algebras generated by pairs of orthoprojectors Yu. A. Alpin, Kh. D. Ikramov		5
	The matrix equation $AX-YB=C$ and related problems Yu. A. Alpin, S. N. Il'in		15
	On the region of values of the system $\{f(z_1),\dots,f(z_n)\}$ in the class of typically real functions. II E. G. Goluzina		24
	On the codimension of the variety of symmetric matrices with multiple eigenvalues M. Dana, Kh. D. Ikramov		34
	On the principal minors of a matrix with a multiple eigenvalue Kh. D. Ikramov		47
	On the 2-norm distance from a normal matrix to the set of matrices with a multiple zero eigenvalue Kh. D. Ikramov, A. M. Nazari		50
	Bounds for the singular values of a matrix involving its sparsity pattern L. Yu. Kolotilina		57
	Bounds and inequalities for the Perron root of a nonnegative matrix. III. Bounds dependent on simple paths and circuits L. Yu. Kolotilina		69
	Pseudoblock conditions of diagonal dominance L. Yu. Kolotilina		94
	To solving multiparameter problems of algebra. 6. Spectral characteristics of polynomial matrices V. N. Kublanovskaya		132
	To solving multiparameter problems of algebra. 7. The $PG$-$q$ factorization method and its applications V. N. Kublanovskaya		150
	Methods for solving some parameter problems of algebra V. B. Khazanov		164
	A resultant approach to computing vector characteristics of multiparameter polynomial matrices V. B. Khazanov		182
	Existence of nonnegative solutions of singular boundary-value problems for second-order ordinary differential equations M. N. Yakovlev		215

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