# セミナー

## 微分幾何・トポロジーセミナー

タイトル Line bundles over noncommutative spaces 2016年6月24日 17:00-18:00 Giovanni Landi 氏　(University of Trieste) 矢上キャンパス14-631A We give a Pimsner algebra construction of noncommutative lens spaces as direct sums of line bundles' and exhibit them as total spaces' of certain principal bundles over noncommutative weighted projective spaces. For each quantum lens space one gets an analogue of the classical Gysin sequence which can be used to give explicit geometric representatives of the K-theory classes of the lens spaces.