Orthogonal Geometry on Generalized Frequencies
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.