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Approximations of strongly singular couplings at quantum graph vertices

Turek, O (Czech Technical)
Friday 13 April 2007, 15:30-16:30

Seminar Room 1, Newton Institute


Approximation of a general strongly singular coupling in the center of a star graph by means of a delta-coupling and delta-interactions will be presented. We will (i) formulate necessary conditions under which the approximation is possible; (ii) show a way how to realize such approximation; (iii) explain its character: we will demonstrate that the coupling is approximated in the norm-resolvent sense.


[pdf ]




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