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對合 /duìhé/ meaning in English

ChineseEnglish
對合 /duìhé/ noun

involution [involutions](mathematics; an endofunction whose square is equal to the identity function; a function equal to its inverse)
noun
[UK: ˌɪn.və.ˈluːʃ.n̩] [US: ˌɪn.və.ˈluːʃ.n̩]