Marzouk, O.A. 2025. Detailed Derivation of the Scalar Explicit Expressions Governing the Electric Field, Current Density, and Volumetric Power Density in the Four Types of Linear Divergent MHD Channels Under a Unidirectional Applied Magnetic Field. Contemporary Mathematics . 6, 4 (Jul. 2025), 4060–4100. DOI:https://doi.org/10.37256/cm.6420256918.