http://francis-drake.livejournal.com/ ([identity profile] francis-drake.livejournal.com) wrote in [personal profile] francis_drake 2010-04-19 08:46 pm (UTC)

А чё, собственно. Связное из соображений; односвязное (фундаментальная группа тривиальна) из соображений "иди прямо, не ошибёшься"; тут-то им и эр куб.
(42 comments)

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