139KiB, 1170x2532, A8A770E1-5A14-4195-A891-9BAE561C9A87.jpg View SameGoogleiqdbSauceNAO Anonymous Thu 25 Mar 16:33:54 2021 No.12881667 ViewReplyOriginalReport Quoted By: >>12882281 That technique of extending the basis of a subspaces to a basis of another vector space is so nice