converse
$ \mathrm{converse}^1
con-(with) + verse(turn)
verb | kənˈvərs | no object
engage in conversation: 会話に参加する
｟かたく｠ 【人と】(形式ばらないで)話をする, 会話をする «with»
e.g. he fell in beside her and they began to converse amicably.: 彼は彼女のそばに倒れ込んで彼は友好的に会話を始めた。
noun | ˈkänˌvərs | archaic
conversation: 会話
DERIVATIVES
converser | kənˈvərsər | noun
ORIGIN
late Middle English (in the sense ‘live among, be familiar with’): from Old French converser, from Latin conversari ‘keep company (with’), from con- ‘with’ + versare, frequentative of vertere ‘to turn’. The current sense of the verb dates from the early 17th century.
$ \mathrm{converse}^2
con-(with) + verse(turn)
共に違っている方を見ている→逆
https://gyazo.com/492c43c640eede5428c5cda6d9fd2b18
source: Math & Science Equation Converse | Intellexual Design, LLC Custom Footwear Apparel & Accessories
noun
a situation, object, or statement that is the reverse of another or corresponds to it but with certain terms transposed: 別のものと反対もしくは対応するがいくらか置き換える状況、物体、陳述
｟かたく｠ ; 〖the ～〗 (事実･語･意見などの)正反対/逆(のもの); 逆の言い方.
e.g. if spirituality is properly political, the converse is also true: politics is properly spiritual.: もしスピリチュアリティが厳密には政治的だというなら、その逆もまた真だ。政治は厳密にスピリチュアルだ。
Mathematics a theorem whose hypothesis and conclusion are the conclusion and hypothesis of another.: 前提と結論が他方で結論と前提となる定理
逆。$ p \Rightarrow qの逆は$ q \Rightarrow p
ちなみに裏(inverse) : $ p \Rightarrow qの裏は$ \lnot p \Rightarrow \lnot q
adjective | ˈkänˌvərs, kənˈvərs |
having characteristics which are the reverse of something else already mentioned: すでに言及された別のものと反対の特徴を持つ
e.g. the slow process of growth and the converse process of decay.:ゆるやかな成長のプロセスとその逆の腐敗のプロセス
ORIGIN
late Middle English: from Latin conversus ‘turned about’, past participle of convertere (see convert).