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a determinant consisting of elements at the intersection of arbitrarily selected k rows and k columns of a matrix. Thus, the determinant
is a second-order minor of the matrix
consisting of all of the elements of the matrix at the intersection of the first and fourth rows and second and third columns.
a mode based on the small (minor) triad with its distinctive coloring (mood).
As a triad that does not coincide with the lower tones on the natural scale, and as a mode constructed from this triad, the minor has a dark coloring in sound that is the opposite of the major. The contrast of major and minor is one of the most important aesthetic contrasts in music.