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Mar 22, 2022 at 17:30 history edited Timothy Chow CC BY-SA 4.0
Added another reference
Mar 22, 2022 at 16:54 comment added Sam Hopkins Interesting to see from the answers that structural graph/matroid theory has many examples (perhaps because of how many technical cases must be addressed in the proofs?)
S Mar 22, 2022 at 16:36 history answered Timothy Chow CC BY-SA 4.0
S Mar 22, 2022 at 16:36 history made wiki Post Made Community Wiki by Timothy Chow