TY - GEN AU - López Camino, Rafael PY - 2026 UR - https://hdl.handle.net/10481/112433 AB - This paper investigates the Newton’s problem of minimal resistance for a body moving through a fluid whose density decreases exponentially with altitude. We prove the local existence and regularity of radial solutions u (r) satisfying the initial... LA - eng PB - Elsevier KW - Newton problem KW - Minimum resistance KW - Banach fixed point theorem TI - The Newton’s problem assuming non-constant density of the fluid DO - 10.1016/j.aml.2026.109901 ER -