Overtaking collisions of oblique isothermal ion‐acoustic multisolitons in ultra‐relativistic degenerate dense magnetoplasmas

relativistic degenerate dense magnetoplasma, containing non‐degenerate inertial warm
ions and ultra‐relativistic degenerate inertialess electrons and positrons. A non‐linear
Korteweg‐de Vries (KdV) equation describing oblique isothermal ion‐acoustic solitons
(OIIASs) in such a plasma model is derived. By applying Hirota's bilinear method (HBM), the
overtaking collisions of oblique isothermal ion‐acoustic multisoliton solutions