Quiver Representations, Gabriel's Theorem, and Morita Equivalence (Zoom for Thought 03/09/21)

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Quiver Representations, Gabriel's 0:57:30

Quiver Representations, Gabriel's Theorem, and Morita Equivalence (Zoom for Thought 03/09/21)

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With this I get a new understanding of groupoids, great.

estebanmarco
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Think you for this simple explanation about representation theory

bahatichadrackkilongo
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25:47 If you take a quiver of 2 objects {1, 2} and 3 parallel arrows 1->2, then the quadratic form would be q(x, y)=x^2+y^2-3xy, which seems to be not positive semi-definite to me?
Because q(1, 1) = 1+1-3 = -1

ronritekinamatigai