TY - JOUR ID - Sapa2012 LB - Sapa2012 AU - Sapa, Lucjan TI - Estimates of solutions for parabolic differential and difference functional equations and applications ST - Estimates of solutions for parabolic differential and difference functional equations and applications JO - Opuscula Math. JA - Opuscula Math. JF - Opuscula Mathematica PY - 2012 VL - 32 IS - 3 SP - 529 EP - 549 DO - http://dx.doi.org/10.7494/OpMath.2012.32.3.529 UR - http://dx.doi.org/10.7494/OpMath.2012.32.3.529 AB - The theorems on the estimates of solutions for nonlinear second-order partial differential functional equations of parabolic type with Dirichlet's condition and for suitable implicit finite difference functional schemes are proved. The proofs are based on the comparison technique. The convergent and stable difference method is considered without the assumption of the global generalized Perron condition posed on the functional variable but with the local one only. It is a consequence of our estimates theorems. In particular, these results cover quasi-linear equations. However, such equations are also treated separately. The functional dependence is of the Volterra type. KW - parabolic differential and discrete functional equations KW - estimate of solution KW - implicit difference method SN - 1232-9274 ER -