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Encounter with Applicative Functors

This holiday weekend has enlightened me on some important topics in functional programming. It has persuaded me to take a real look at category theory. It all began with a need of intuition on Applicative Functors. They really are such exquisite things. Alright, prologue aside,...

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Synthetic Geometry Online

It is common in my study to present mathematical examples, proofs, notes, etc. online. Generally, there are tools for analytic problems: things like mathbin, texpaste. What about steps in problems of Geometry — or sharing them soundly