This is an analytical paper generalizing the standard input-output (IO) model on the one hand and the equally standard method of solving the model by means of power series expansion, on the other. The ...

The model is a nonlinear version of the well-known linear input-output model of Leontief. Conditions are given for the nonlinear model to be workable in the sense that (i) there is a unique ...

GPT-5 is more than an upgrade. It aims to be a single, smarter system that blends reasoning, multimodality, cost efficiency, ...