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Orthogonal group. In mathematics, the orthogonal group in dimension n, denoted O (n), is the group of distance-preserving transformations of a Euclidean space of dimension n that preserve a fixed point, where the group operation is given by composing transformations. The orthogonal group is sometimes called the general orthogonal group, by ...
Ofelia Zepeda (born in Stanfield, Arizona, 1952) is a Tohono O'odham poet and intellectual. She is Regents' Professor of Tohono O'odham language and linguistics and Director of the American Indian Language Development Institute (AILDI) [2] at The University of Arizona. [3] Zepeda is the editor for Sun Tracks, a series of books that focuses on ...