Modular and distributive lattices without vertical sums and 2-sums
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Exhaustive listings of modular lattices (at most 33 elements) and distributive lattices (at most 55 elements), excluding vertical sums and 2-sums. Program code is separately...
本数据集包含元素个数不超过33的模格（modular lattices）与元素个数不超过55的分配格（distributive lattices）的完备枚举清单，且已排除垂直直和（vertical sums）与2-直和（2-sums）。配套程序代码将另行提供……
