H. M. Pipa
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Articles: 2
The criteria of maximal dissipativity and self-adjointness for a class of differential-boundary operators with bounded operator coefficients
MFAT 14 (2008), no. 4, 372-379
372-379
A class of the second order differential-boundary operators acting in the Hilbert space of infinite-dimensional vector-functions is investigated. The domains of considered operators are defined by nonstandard (e.g., multipoint-integral) boundary conditions. The criteria of maximal dissipativity and the criteria of self-adjointness for investigated operators are established.
On some perturbations changing the domain of proper extension of positively definite operator
MFAT 11 (2005), no. 3, 257-269
257-269