[#束論](束論) [https://math.hawaii.edu/~jb/](https://math.hawaii.edu/~jb/) - [[Posets]]に、その有限部分集合の[[sup]]と[[inf]]を取る操作が加わったものが[[lattice]] 参考 - [https://www.cs-study.com/koga/lattice/explanations_on_concepts_of_posets.html](https://www.cs-study.com/koga/lattice/explanations_on_concepts_of_posets.html)