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Matt
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Issue UPDATE: in graph theory, different definitions of edge crossing numbers - impact on applications?
Adding to my comment, here is a 2019 reference "Invariants of graph drawings in the plane" from A. Skopenkov arxiv.org/pdf/1805.10237.pdf
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Issue UPDATE: in graph theory, different definitions of edge crossing numbers - impact on applications?
I think in algebraic topology literature, Hanani-Tutte is known as a version of the Flores-Van Kampen theorem, if that's a helpful link
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Category theory and set theory: just a different language, or different foundation of mathematics?
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