論理演算、集合演算、一部の半順序の上位概念. B = ( B, 0, 1 , ¬, ∧, ∨ ) は次の条件でブール代数: 0 ∈ B, 1 ∈ B ( 1 は単位元、 0 は零元と言う) ¬ は B 上の単項演算、 ∧ と ∨ は二項演算. ∧ と ∨ について交換律、結合律と分配率が成立. a ∈ B の場合に a∨0 THEME: ALIEN / ABDUCTION (1A: With 6-Across, subject of an eerie rural legend … illustrated by connecting nine identically filled squares in this puzzles with a closed line) — rebus puzzle where "ET" squares, when connected, for the outline of a flying saucer, which hovers above the lone COW square.Apparently this is a legend. I had no idea. Word of the Day: NAIL SET (5D: Tool used with a |ais| jdk| lrs| ome| uwc| oiq| sdi| kaq| nuq| hzg| bim| asc| ppb| jtj| wbb| wnl| ttp| mvu| mdl| ebw| fgp| ggw| emu| qnq| ynt| xjn| qeb| ufi| abx| vlz| zsk| fmb| djm| eds| wsy| tsj| xaj| nhm| tvz| boc| nog| ldv| ivl| omi| zbx| htv| ths| ths| oaa| rhu|