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Publication:3350215
zbMath0726.47034MaRDI QIDQ3350215
Publication date: 1989
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
energy spaceelliptic operatoressentially selfadjoint in \(L^ 2\)nonnegative selfadjoint operator with discrete spectrum
Linear symmetric and selfadjoint operators (unbounded) (47B25) General theory of partial differential operators (47F05) Second-order elliptic equations (35J15)
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