Orthogonal complement of the orthogonal complement

This is a series of videos that I have incorporated into my VoiceThread(R) lectures of a course Honors Linear Algebra II. The course is taught entirely online for students at NYU-Shanghai(R).

Most of the proofs are done in 2 or 3-minute videos by the students themselves, and the proofs with an extra level of subtlety are done by me.

I will add more details to these descriptions as time allows.