Geodesic
The convergence of interpolating on scalar matrix knots in a class of analytical functions
Trudy Instituta matematiki, Tome 14 (2006) no. 2, pp. 102-111.

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The minimal regularity domains of functions where the convergence of interpolating on scalar matrix knots on a set of matrices with a given spectrum structure occurs are found. For the case of equidistant scalar matrix knots, the convergence of trigonometrical interpolating in a class of periodic analytical functions is proved. 
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L. A. Yanovich; A. V. Tarasevich. The convergence of interpolating on scalar matrix knots in a class of analytical functions. Trudy Instituta matematiki, Tome 14 (2006) no. 2, pp. 102-111. http://geodesic.mathdoc.fr/item/TIMB_2006_14_2_a12/

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