For other topics related to Einstein, see Einstein (disambiguation).
In mathematics, especially in applications of linear algebra to physics, the Einstein notation or Einstein summation convention is a notational convention that implies summation over a set of indexed terms in a formula, thus achieving notational brevity. It was introduced by Albert Einstein in 1916.
Read more about Einstein Notation: Common Operations in This Notation
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“As far as the laws of mathematics refer to reality, they are not certain, and as far as they are certain, they do not refer to reality.”
—Albert Einstein (1879–1955)