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Monotone extensions of operators and the first boundary value problem. (English) Zbl 0527.46003
Differential equations and their applications, Equadiff 5, Proc. 5th Czech. Conf., Bratislava 1981, Teubner-Texte Math. 47, 268-271 (1982).
46A22 Theorems of Hahn-Banach type; extension and lifting of functionals and operators
47B60 Linear operators on ordered spaces
31D05 Axiomatic potential theory
35J25 Boundary value problems for second-order elliptic equations
35K20 Initial-boundary value problems for second-order parabolic equations
46A40 Ordered topological linear spaces, vector lattices
Zbl 0507.00006