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References to 'pseudograph'
1. ${k}$-connected graph by marijke
2. (closed) walk / trek / trail / path by marijke
3. adjacency matrix by CWoo
4. diameter by marijke
5. graph homomorphism by CWoo
6. homotopy category by bci1
7. labeled graph by CWoo
8. loop by drini
9. planar graph by archibal
10. precategory by CWoo
11. valency by marijke
12. Vizing's theorem by marijke