On phantom maps into co-H-spaces

開催日時
2016/05/09 月 16:00 - 17:00
場所
6号館609号室
講演者
入江幸右衛門
講演者所属
大阪府立大学
概要

Schwass obtained the following result. "Let $Y$ be a simply connected co-H-space. Then $Y$ is the target of essential phantom maps from finite type domains if and only if $Y$ is rationally non-trivial." I will give an elementary proof for his result.