Abstract index notation
id:
abstract-index-notation-190-18593713
title:
Abstract index notation
text:
Abstract index notation is a mathematical notation for tensors and spinors that uses indices to indicate their types, rather than their components in a particular basis. The indices are mere placeholders, not related to any basis and, in particular, are non-numerical. Thus it should not be confused with the Ricci calculus. The notation was introduced by Roger Penrose as a way to use the formal aspects of the Einstein summation convention to compensate for the difficulty in describing contraction
brand slug:
wiki
category slug:
encyclopedia
description:
Mathematical notation for tensors and spinors
original url:
https://en.wikipedia.org/wiki/Abstract_index_notation
date created:
date modified:
2023-06-20T16:22:31Z
main entity:
{"identifier":"Q1166872","url":"https://www.wikidata.org/entity/Q1166872"}
image:
fields total:
13
integrity:
14