identity matrix

noun

Definition of identity matrix

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

Examples of identity matrix in a Sentence

Recent Examples on the Web For example, the identity element in the group must be assigned the identity matrix. Quanta Magazine, "The ‘Useless’ Perspective That Transformed Mathematics," 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.

First Known Use of identity matrix

1908, in the meaning defined above

Keep scrolling for more

Learn More about identity matrix

Time Traveler for identity matrix

Time Traveler

The first known use of identity matrix was in 1908

See more words from the same year

Statistics for identity matrix

Cite this Entry

“Identity matrix.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/identity%20matrix. Accessed 26 Oct. 2020.

More from Merriam-Webster on identity matrix

Britannica.com: Encyclopedia article about identity matrix

Comments on identity matrix

What made you want to look up identity matrix? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Namesakes Word Quiz

  • a citrus fruit possibly named after a person
  • Which of the following is a fruit named after a Moroccan seaport?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Citation

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!