Regular matrix

Regular matrix may refer to:

• Regular stochastic matrix, a stochastic matrix such that all the entries of some power of the matrix are positive.
• invertible matrix (this usage is rare).
• the opposite of irregular matrix, a matrix with a different number of entries in each row.
• Regular Hadamard matrix, a Hadamard matrix whose row and column sums are all equal.
• Sansui QS Regular Matrix system for Quadraphonic sound.
• May be referring to a regular element of a Lie algebra, when the Lie algebra is gl_n.