Phase formation and physicochemical properties of perovskite complex oxides based on bismuth ferrite-
muth ferrite(Bi1-x/3-x/3)[Fe 1-xTix]O3 with x = 0.00-0.48, δx = 0.03, has been studied. The homogeneity
Helmholtz potentiality conditions for systems of differential-difference equations-difference equations of
muth order of neutral type, we obtain necessary and sufficient conditions for potentiality