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Jakubík, Ján
On projective intervals in a modular lattice. (English). Mathematica Bohemica, vol. 117 (1992), issue 3, pp. 293-298
MSC: 06C05 | MR 1184542 | Zbl 0773.06013
References:
[1] G. Birkhoff: Lattice Theory. Third Edition, Providence, 1967. MR 0227053 | Zbl 0153.02501
[2] G. Behrendt: Multiposets and the convexity of posets. Ars combin. 23 (1987), 69-74. MR 0886940
[3] B. Bollobás G. Brightwell J. Nešetřil: Random graphs and covering graphs of posets. Order 3 (1986), 245-255. MR 0878921
[4] K. Engel N.N. Kuzjurin: About the ration of the size of a maximum antichain to the size of a maximum level in finite partially ordered sets. Combinatorica 5 (1985), 301-309. MR 0845139
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