Friedrichs systems in a Hilbert space framework: Solvability and multiplicity
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DOI: 10.1016/j.jde.2017.08.051
Abstract: Abstract The Friedrichs (1958) theory of positive symmetric systems of first order partial differential equations encompasses many standard equations of mathematical physics, irrespective of their type. This theory was recast in an abstract Hilbert space… read more here.
Keywords: abstract friedrichs; hilbert space; friedrichs systems; systems hilbert ... See more keywords
On Fuzzy Deductive Systems of Hilbert Algebras
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DOI: 10.1155/2020/6910726
Abstract: In this paper, we study fuzzy deductive systems of Hilbert algebras whose truth values are in a complete lattice satisfying the infinite meet distributive law. Several characterizations are obtained for fuzzy deductive systems generated by… read more here.
Keywords: class fuzzy; deductive systems; hilbert algebras; systems hilbert ... See more keywords