Feng Gao
Abstract
Idempotent matrix is an important matrix in algebra.This paper studies the properties of idempotent matrix and proposes sufficient and necessary conditions under which the calculations of summation,subtraction and multiplication between idempotent matrix are close.
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Idempotent matrix is an important matrix in algebra.This paper studies the properties of idempotent matrix and proposes sufficient and necessary conditions under which the calculations of summation,subtraction and multiplication between idempotent matrix are close.
Key concepts: Idempotent matrix, Idempotence, Mathematics, Involutory matrix, Matrix (chemical analysis), Matrix ring, Algebra over a field, Square root of a 2 by 2 matrix