Elliptic, Hyperbolic and Mixed Complex Equations with Parabolic Degeneracy : Including Tricomi-Bers and Tricomi-Frankl-Rassias Problems.
In the recent half-century, many mathematicians have investigated various problems on several equations of mixed type and obtained interesting results, with important applications to gas dynamics. However, the Tricomi problem of general mixed type equations of second order with parabolic degeneracy...
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