On Monday 24 October Dr Marj Batchelor gave a talk to the TMS!

Talk
Speaker: Dr Marj Batchelor
Title: The Rewards of Thinking Coalgebraically
Abstract: The theory of coalgebras is not taught in the undergraduate syllabus, nor yet in Part III or even as a graduate course, but not because of any great conceptual difficulty. Indeed most toddlers who grow up with at least one sibling and an aunt foolish enough to provide but a single box of chocolates for the two of them to share have a keen instinctive understanding of the essential idea. As an example of the advantages of thinking coalgebraically, I will talk about the enrichment of the category of algebras over coalgebras, and specifically the consequent benefits afforded to the concept of “maps between modules”.

Cambridge Puzzle Hunt
The Cambridge Puzzle Hunt now has its own website: http://cph.soc.srcf.net/
If you are interested in participating you can join the mailing list: https://www.srcf.net/mailman/listinfo/cph-all

You can submit your answer into the puzzle box at the TMS talk on Monday or the TCSS talk on Tuesday. Alternatively you can use the online submission form. We will draw a winner on Wednesday. More information can be found here: http://cph.soc.srcf.net/puzzles/