... theory"), A.Haar(a Hungarian mathe-matician who won recognition for his works on "group integration"),HiWeyl (one of the most outstanding mathematicians of the first halfof this ... (linear, convex and other modifications of "mathematicalprogramming",the so-called "theoryofgames", etc.)made an advancedand systematic study of linear inequalities a necessity,thata ... unknowns.Thiswasdictatedmainlybytwocircumstances. Firstly, these systemsaresimpletoinvestigateandallowonetokeepentirely withintheframeworkof"school"mathematics.Secondly,...