PROF. CRUMRINE PATTERSON declares that his motive in writing this text-book of projective geometry was "the feeling that a more complete discussion than is usual in elementary textbooks is desirable".

The 3 spatial dimensions that we perceive. Source: Drawing and Photograph by Ezequiel Morsella, 4/4/2022 Scientists from around the globe have come together to discuss the nature of consciousness (see ...

THIS text-book should evoke in the student a realization of the infinite possibilities opened up by the many geometries included in the general scheme in which the classical geometry of his curriculum ...