matrix : Idioms & Phrases


active matrix screen

  • noun a type of LCD screen used for some portable computers; there is a separate circuit for each pixel
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characteristic root of a square matrix

  • noun (mathematics) any number such that a given square matrix minus that number times the identity matrix has a zero determinant
    eigenvalue; characteristic root of a square matrix; eigenvalue of a matrix.
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correlation matrix

  • noun a matrix giving the correlations between all pairs of data sets
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diagonal matrix

  • noun a square matrix with all elements not on the main diagonal equal to zero
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dot matrix

  • noun a rectangular matrix of dots from which written characters can be formed
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dot matrix printer

  • noun a printer that represents each character as a pattern of dots from a dot matrix
    dot matrix printer; dot printer.
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eigenvalue of a matrix

  • noun (mathematics) any number such that a given square matrix minus that number times the identity matrix has a zero determinant
    eigenvalue; characteristic root of a square matrix; eigenvalue of a matrix.
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eigenvalue of a square matrix

  • noun (mathematics) any number such that a given square matrix minus that number times the identity matrix has a zero determinant
    eigenvalue; characteristic root of a square matrix; eigenvalue of a matrix.
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identity matrix

  • noun a scalar matrix in which all of the diagonal elements are unity
    identity matrix.
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matrix addition

  • noun the addition of matrices
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matrix algebra

  • noun the part of algebra that deals with the theory of matrices
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matrix inversion

  • noun determination of a matrix that when multiplied by the given matrix will yield a unit matrix
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matrix multiplication

  • noun the multiplication of matrices
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matrix operation

  • noun a mathematical operation involving matrices
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matrix printer

  • noun a printer that represents each character as a pattern of dots from a dot matrix
    dot matrix printer; dot printer.
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matrix transposition

  • noun the interchange of each row of a square matrix with the corresponding column
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nonsingular matrix

  • noun a square matrix whose determinant is not zero
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passive matrix display

  • noun a type of LCD display used for some portable computers; parallel wires run both vertically and horizontally and pixels are turned on when the wires intersecting at that pixel are both energized
    • passive matrix displays are generally inferior to active matrix displays
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real matrix

  • noun a matrix whose elements are all real numbers
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scalar matrix

  • noun a diagonal matrix in which all of the diagonal elements are equal
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singular matrix

  • noun a square matrix whose determinant is zero
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square matrix

  • noun a matrix with the same number of rows and columns
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unit matrix

  • noun a scalar matrix in which all of the diagonal elements are unity
    identity matrix.
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wire matrix printer

  • noun an impact printer in which each character is represented by a pattern of dots made by wires or styli
    wire printer; stylus printer.
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