## matrices

ma·tri·ces*alt. pl. of*matrix

## matrices

noun

A plural of matrix

**Matrices**of steel and iron were made at a later time in the 16th and 17th centuries.- Under the general heading "Fundamental Notions" occur the subheadings "Foundations of Arithmetic," with the topics rational, irrational and transcendental numbers, and aggregates; "Universal Algebra," with the topics complex numbers, quaternions, ausdehnungslehre, vector analysis,
**matrices**, and algebra of logic; and "Theory of Groups," with the topics finite and continuous groups. - A theory of
**matrices**has been constructed by Cayley in connexion particularly with the theory of linear transformation. - The method is essentially the same as that developed, under the name of "
**matrices**," by Cayley in 1858; but it has the peculiar advantage of the simplicity which is the natural consequence of entire freedom from conventional reference lines. - This was successfully accomplished by the use of flexible paper
**matrices**, from which metal plates could be cast in shaped moulds to any desired curve.

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