Two Mathematical Comments on the Thevenin Theorem: An “Algebraic Ideal” and the “Affine Nonlinearity”

Figure 4

(a) A linear circuit with many inputs (may be some sensed physical influences, e.g., the sun’s radiation). (b) The Thevenin equivalent of (a), which can be seen as an affine-nonlinear 1-port.

(a)

(b)