open index

noun

index (on a tensor) that isn't summed over

“In the expression x_μ=η_(μν)x^ν, mu is an open index.”

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Meanings

nounopen index (plural open indices)

plural open indices

  1. natural sciencesindex (on a tensor) that isn't summed over

    In the expression x_μ=η_(μν)x^ν, mu is an open index.

Cite this entry
APA

open index. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/open%20index

MLA

“open index.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/open%20index. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “open index,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/open%20index.

Source: open index on Wiktionary, CC BY-SA 4.0.