In philosophy of science, intertheoretic reduction occurs when a reducing theory makes predictions that perfectly or almost perfectly match the predictions of a reduced theory, while the reducing theory explains or predicts a wider range of phenomena under more general conditions.
Intertheoretic reduction in philosophy of science refers to the situation where a reducing theory produces precise or near-precise forecasts that align with those of a reduced theory, and the reducing theory accounts for or predicts a wider variety of phenomena under more comprehensive conditions.