This is a unified therapy of a few of the algebraic ways to geometric areas. The research of algebraic curves within the complicated projective airplane is the ordinary hyperlink among linear geometry at an undergraduate point and algebraic geometry at a graduate point, and it's also a massive subject in geometric purposes, reminiscent of cryptography.

380 years in the past, the paintings of Fermat and Descartes led us to check geometric difficulties utilizing coordinates and equations. at the present time, this is often the most well-liked manner of dealing with geometrical difficulties. Linear algebra presents a good software for learning all of the first measure (lines, planes) and moment measure (ellipses, hyperboloids) geometric figures, within the affine, the Euclidean, the Hermitian and the projective contexts. yet fresh purposes of arithmetic, like cryptography, desire those notions not just in genuine or complicated circumstances, but additionally in additional common settings, like in areas developed on finite fields. and naturally, why now not additionally flip our realization to geometric figures of upper levels? along with all of the linear elements of geometry of their such a lot common environment, this publication additionally describes valuable algebraic instruments for learning curves of arbitrary measure and investigates effects as complicated because the Bezout theorem, the Cramer paradox, topological team of a cubic, rational curves etc.

Hence the e-book is of curiosity for all those that need to educate or examine linear geometry: affine, Euclidean, Hermitian, projective; it's also of serious curiosity to people who don't want to limit themselves to the undergraduate point of geometric figures of measure one or two.