Putanga 1: Ko te rereketanga nui i waenga i te Cech - Cohomology me te Garben - Cohomology he hihiri mo te whakamahi i nga hipoki: he maha ake nga taonga ka taea i te cech - nerve. Putanga 2: Ko te rereketanga pea i waenga i te Cech cohomology me te cohomology he hihiri mo te whakamahinga o nga hipoki: he mea nui ake enei i te Cech nerve Pātai: He ōrite te tikanga o te rerenga 1 me te rerenga 2? He Ae, he Kore rānei?
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