The purpose is to bring the hidden geometric structure of “frequencies” into light. We investigate the geometric structure of “extended frequencies.” The “extended frequencies” are “geometric algebra”-valued vector fields on surfaces. In this chapter is given a metric-geometrical interpretation of the generalized frequency by F. Milano in the framework. It is shown that the class of all the extended frequencies is a normed linear space on which the orthogonal group acts isometrically, and thus the class of all generalized frequencies of Milano is interpreted as an orthogonal geometry.

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Orthogonal Geometry on Generalized Frequencies

  • Yuichi Hasegawa,
  • Kota Horizumi

摘要

The purpose is to bring the hidden geometric structure of “frequencies” into light. We investigate the geometric structure of “extended frequencies.” The “extended frequencies” are “geometric algebra”-valued vector fields on surfaces. In this chapter is given a metric-geometrical interpretation of the generalized frequency by F. Milano in the framework. It is shown that the class of all the extended frequencies is a normed linear space on which the orthogonal group acts isometrically, and thus the class of all generalized frequencies of Milano is interpreted as an orthogonal geometry.