Discussion Board for the Lecture Series on Bing topology and Casson handles

Welcome to the discussion board for Mike Freedman's lectures on Bing topology and Casson handles [1]. To add a new question or comment, press "Add new comment" [2] below. For questions please add "Question" to the subject line, or "Answer" for answers. To reply to a question or add another answer, press "reply" at the lower-right corner of the question.

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