http://ro-che.livejournal.com/ ([identity profile] ro-che.livejournal.com) wrote in [personal profile] deniok 2009-01-23 11:23 pm (UTC)

Что-то типа (\x.f(xx))(\x.f(xx)), f -- любая инволюция (т.е. f . f = id)
(11 comments)

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