There's the Penrose Graphical Notation[0] for linear algebra, and (much more generally) string diagrams[1] for representing and manipulating morphisms in n-cate

There's the Penrose Graphical Notation[0] for linear algebra, and (much more generally) string diagrams[1] for representing and manipulating morphisms in n-categories. [0] https://en.m.wikipedia.org/wiki/Penrose_graphical_notation https://en.m.wikipedia.org/wiki/Penrose_graphical_notation [1] https://en.m.wikipedia.org/wiki/String_diagram https://en.m.wikipedia.org/wiki/String_diagram