## The first boundary value problem for nondivergent second order parabolic equations with discontinuous coefficients.(English. Russian original)Zbl 0663.35033

Math. USSR, Sb. 59, No. 2, 471-495 (1988); translation from Mat. Sb., Nov. Ser. 131(173), No. 4(12), 471-495 (1986).
This paper is concerned with the questions of solvability and smoothness of weak solutions of the first boundary value problem for a parabolic equation of the form $Lu=\sum^{n}_{i,k=1}a_{ik}(t,x)u_{x_ ix_ k}-u_ t=f(t,x).$

### MSC:

 35K20 Initial-boundary value problems for second-order parabolic equations 35B65 Smoothness and regularity of solutions to PDEs 35R05 PDEs with low regular coefficients and/or low regular data 35D05 Existence of generalized solutions of PDE (MSC2000)
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