The previous lecture in this series is here. The next lecture in this series is here.
This lecture covers projective space bundles, with Hirzebruch surfaces and scrolls as examples. It also includes a brief discussion of abstract varieties.
Typo: in the definition of a general scroll on page 3, there should be a factor of μ in front of each xi.
This video is part of a lecture course by Richard Borcherds from 2020.