Graphical Linear Algebra — an interactive explorer

The notation of Bonchi, Sobociński & Zanasi: linear algebra drawn as string diagrams. Color is meaning here — black is the copying structure, white is the adding structure, and inverting color is a real mathematical operation (duality), not decoration.

Canonical conventions from Sobociński's graphicallinearalgebra.net (ep. 7–8) & Interacting Hopf Algebras. Companion to studies/graphical-linear-algebra-kidlisp-study.md and the AC piece $gla.