Hari Mohan
The instability problem of magnetorotatory thermosolutal convection of the Veronis and Stern type is examined taking in to account the Dufour effect. Semi-circle theorems are derived, that prescribe upper limits for complex growth rate of oscillatory motions of neutral or growing amplitude in such a manner that it naturally culminates in sufficient conditions precluding the non- existence of such motions for an initially bottom heavy as well as an initially top heavy configurations. Further, results for Dufour-driven thermosolutal convection problems with or without the individual effects of a rotation or magnetic field follow as a consequence.
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