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On the existence of the solution for \(\partial\varphi (u'(t))+\partial\Psi (u(t))\ni f(t)\). (English) Zbl 0418.35056


MSC:

35G10 Initial value problems for linear higher-order PDEs
35K25 Higher-order parabolic equations
35K15 Initial value problems for second-order parabolic equations
35K70 Ultraparabolic equations, pseudoparabolic equations, etc.
26E25 Set-valued functions
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