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Selbstadjungierte Differentialoperatoren mit unendlich vielen unabhängigen Variablen. (Russian) Zbl 0321.47034


MSC:

47F05 General theory of partial differential operators
46M99 Methods of category theory in functional analysis
46M05 Tensor products in functional analysis
47B25 Linear symmetric and selfadjoint operators (unbounded)
35P99 Spectral theory and eigenvalue problems for partial differential equations
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