> I also find it takes a lot of mentally energy to get my head around them and makes readability harder. Why so? They take what was implicit and make it expli

> I also find it takes a lot of mentally energy to get my head around them and makes readability harder. Why so? They take what was implicit and make it explicit, so I would expect this notation to be far easier to understand than transposes and matmuls. You also get better variable names for axes, etc. My complaint with Einsum variants in Python is that they are not generic enough -- they are specialised to multiplication & addition whereas generalizing slightly to allow other operators makes the code very expressive and elegant, while allowing you to still compile down to efficient code. For example, the Tullio library in Julia lang is absolutely a breath of fresh air.