Aimed at second year graduate students, this text introduces them to cohomology theory (involving a rich interplay between algebra and topology) with a minimum of prerequisites. No homological algebra is assumed beyond what is normally learned in a first course in algebraic topology, and the basics of the subject, as well as exercises, are given prior to discussion of more specialized topics.
This is a well-written book on a difficult subject. Very clearly structured, with reasonably detailed proofs, and the chapters are partitioned into short "lecture sized" sections each of which focusses on one aspect of the chapter's topic. It is certainly helpful to bring along a thorough knowledge on algebraic topology when starting this book. The exposition relies strongly on readers doing the many exercises at the end of each section, which is good in principle, but in practice can lead to people who do not have the leisure to do the exercises (like me) getting lost along the way.
A deeply engaging read that balances emotion and insight. The characters felt real, and the pacing kept me hooked throughout. It’s one of those books that stays with you long after the last page. Unrelated but helpful for anyone dealing with Mexican bureaucracy I recently had to retrieve my RFC using CURP and found this site super useful https://rfc-conhomoclave.com.mx/curp-...