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Hi all,
Isn't the mapping class group of a contractible space trivial (or, if we consider isotopy, {+/-Id})?
Since every map from a contractible space is (homotopically)trivial.
Isn't the mapping class group of a contractible space trivial (or, if we consider isotopy, {+/-Id})?
Since every map from a contractible space is (homotopically)trivial.