NYC Category Theory and Algebra

In this meeting series, we're reading through Allen Hatcher's Algebraic Topology book.

https://pi.math.cornell.edu/~hatcher/AT/AT.pdf

There is a lecture series on Youtube from Pierre Albin using this book

https://www.youtube.com/playlist?list=PLpRLWqLFLVTCL15U6N3o35g4uhMSBVA2b

You may find NJ Wildberger's lecture series helpful too

https://www.youtube.com/playlist?list=PL6763F57A61FE6FE8

Gabriel Islambouli's lecture series

https://www.youtube.com/playlist?list=PLevbjS885lNS9Nk8ve13FE5tMdZejsTrE

MIT Lecture Notes on Algebraic Topology
https://www.ams.org/open-math-notes/omn-view-listing?listingId=110764

Computational Algebraic Topology (notes on Cohomology with video lectures)
https://people.maths.ox.ac.uk/nanda/cat/

Discord https://discord.gg/jMTs5gmVRj

Please read section 49 Comohology Rings of Surfaces in Munkres' Elements Of Algebraic Topology and try exercises 49.2, 49.3 (a), 49.8. Read Vidit Nanda's lecture note 5 too if you are interested.

Notes can be found at

https://github.com/boygao1992/bookCollection/blob/master/allen-hatcher_algebraic-topology/ch2.svgz

in Stylus Lab http://www.styluslabs.com/

format.

(Browser won't trigger "Save as" dialog when clicking Download button so you need to right click and "Save link as".)

If you've done any exercises or have organized talk on topics related to category theory, feel free to present during the meeting.