PS

Horizontal composition in string diagrams

圏論 String diagram Natural transformation

(1-natural transformations in string diagrams - PS を使って･･･)

Vertical composition

f:id:mbps:20160213065503p:plain

Horizontal composition

f:id:mbps:20160213065813p:plain

もっと早く知っていれば。

参考文献

  1. Strings and Stripes. Graphical Calculus for Monoidal Functors and Monads.pdf