A very short algebraic proof of the Farkas lemma
The short note presents a generalization of the classical Farkas lemma from linear programming [\textit{J. Farkas}, J. für Math. 124, 1--27 (1901; JFM 32.0169.02)] that holds for vector spaces over a totally ordered (skew) field.
scientific article; zbMATH DE number 6137591