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The Tensor Cookbook

The Tensor Cookbook

8 comments

·January 31, 2025
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gweinberg

Why is counting lines easier than just using numbers? A vector is a 1 tensor, a matrix is a 2 tensor, a 3 tensor is a 3 tensor, and a scalar is a zero tensor!

hnarayanan

What even is this notation??

abecedarius

See the link at bottom right to "Penrose graphical notation".

(I have nothing to do with the site.)

robblbobbl

Great job!

keithalewis

This is incomplete, incorrect, and irrelevant. Standard notation already exists. I'm sure it is fun to draw squiggly lines and some people enjoy reinventing the wheel. Spend some time learning what others have taught us before striking out on your own lonely path.

llm_trw

This is standard notation that's been used for decades.

https://arxiv.org/abs/2402.01790v1

HighlandSpring

Do point us at this standard notation

ok123456

https://en.wikipedia.org/wiki/Einstein_notation