## Existence of submatrices with all possible columns.(English)Zbl 0373.05004

### MSC:

 05A05 Permutations, words, matrices 05C99 Graph theory 52A10 Convex sets in $$2$$ dimensions (including convex curves)
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### References:

 [1] Erdös, P., The art of counting, () [2] Erdös, P.; Szekeres, G., A combinatorial problem in geometry, Compositio math., 2, 463-470, (1935) · Zbl 0012.27010 [3] Erdös, P.; Szekeres, G., On some extremum problems in elementary geometry, Ann. univ. sci. Budapest. Eötvös. sect. math., 3-4, 53-62, (1960 1961) [4] Sauer, N., On the density of families of sets, J. combinatorial theory A, 13, 145-147, (1972) · Zbl 0248.05005 [5] Vapnik, V.N.; Chervonenkis, A.Ya., On the uniform convergence of relative frequencies of events to their probabilities, Theor. probability appl., 16, 264-280, (1971) · Zbl 0247.60005
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