On multiplication of 2 × 2 matrices

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Abstract

The two main results of this note are:. (i) The minimum number of multiplications required to multiply two 2 X 2 matrices is seven. (ii) The minimum number of multiplications/divisions required to multiply two complex numbers is three. © 1971.

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APA

Winograd, S. (1971). On multiplication of 2 × 2 matrices. Linear Algebra and Its Applications, 4(4), 381–388. https://doi.org/10.1016/0024-3795(71)90009-7

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