アカウントをお持ちの方はログインCopyright NHK (Japan Broadcasting Corporation). All rights reserved. 許可なく転載することを禁じます。このページは受信料で制作しています。
Дарья Устьянцева (редактор отдела «Мир»)
。谷歌浏览器【最新下载地址】对此有专业解读
There is a special form for boolean formulas called "Conjunctive Normal Form" (CNF). A problem in this form consists of clauses connected with and operators, where each clause only contains variables connected with or operators. The variables can appear negated, but only variables can be directly negated, something like !(a && b) is not allowed. An example boolean formula in CNF form is:
FT Videos & Podcasts