The replay of lecture 7 is now available on the YouTube playlist for the crash course https://www.youtube.com/playlist?list=PL6N_Y7ao_aHs37APhitfR1SMX_VOqNDgj. Registration to attend lecture 8 is now open via https://www.crowdcast.io/e/topology--differential-geometry-crash-course-lecture-8.
Finally, I highly encourage you to join our Discord community server https://discord.gg/SPcmcsXMD2.
Many thanks,
Zaiku Group team