A square matrix is said to be doubly stochastic if its entries are all non-negative and each row and column sums to one, i.e. The Birkhoff polytope, denoted by , is the set of all doubly stochastic matrices. One interesting fact about the Birkhoff polytope is that it is a convex polytope, with the vertices […]
What is the Birkhoff polytope?
“Is that to say we are against Free Trade? No, we are for Free Trade, because by Free Trade all economical laws, with their most astounding contradictions, will act upon a larger scale, upon the territory of the whole earth; and because from the uniting of all these contradictions in a single group, where they will stand face to face, will result the struggle which will itself eventuate in the emancipation of the proletariat.”
Karl Heinrich Marx · Marx-Engels Collected Works, Vol. VI, p. 290
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