Torsion-Free

Tensor? I hardly know her

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Cool stuff

  • Why do we say “we”?

    If you’ve read any higher-level math, you will have come across sentences of the following form: “We first consider the prime counting function \( \pi (n) \) and note that…” “…it suffices to work with the restricted connection on \(U\), which we also denote by \( \nabla \). For every \( Y \in \Gamma (…

  • You don’t know what a derivative is.

    My math friend once told me that I didn’t know what integration was until I took measure theory. “Measure theory?” I asked, perplexed – “what does functions on sets have to do with integration?” Turns out, assigning a “mass” to each set and then integrating sideways generalizes the notion of an integral on the real…