12

Answers
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11
“Philosophical” meaning of the Yoneda Lemma
3
What’s a groupoid? What’s a good example of a groupoid?
6
Resources for graphical languages / Penrose notation / Feynman diagrams / birdtracks?
2
Category theory sans (much) motivation?
1
What are examples of good toy models in mathematics?
0
creating high quality figures of surfaces
8
Is there a standard notation for binary relations in category theory?
2
Understanding Penrose diagrammatical notation
3
conditions for natural transformations to exist?
0
When are all split monomorphisms complemented?
3
When do PROP-morphisms induce adjunctions?
2
Can the objects of every concrete category themselves be realized as small categories?