identity matrix

noun

: a square matrix that has numeral 1's along the principal diagonal and 0's elsewhere

Example Sentences

Recent Examples on the Web For example, the identity element in the group must be assigned the identity matrix. Quanta Magazine, 9 June 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'identity matrix.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1908, in the meaning defined above

Time Traveler
The first known use of identity matrix was in 1908

Dictionary Entries Near identity matrix

Cite this Entry

“Identity matrix.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/identity%20matrix. Accessed 4 Feb. 2023.

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