Category theory for JavaScript programmers #27: string diagrams

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I know this Video is from 2013 but Thank you very much.. Good stuff

aligrafix
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14:18 — I think something isn't right here. I think the column vector in the middle row should be transposed to a row-vector in order to give 𝐑⁴ → 𝐑¹. Then, likewise, the row-vector on the bottom should be transposed to give 𝐑 → 𝐑⁴. Is that right, or am I missing something?

TimTeatro