book on linear algebra and multidimensional geometry added (#11307)

* book on linear algebra and multidimensional geometry added

* Resolved bad link issue

I have corrected the bad link in the pull request. The previous link was marked as invalid, and I have updated it to a proper link. Thank you for your understanding!

* Title of the book changed

The title of the book has been changed as per requested

Author: Keerthan04

Diff for: books/free-programming-books-subjects.md

@@ -504,6 +504,7 @@ Books that cover a specific programming language can be found in the [BY PROGRAM
 * [Concepts & Applications of Inferential Statistics](http://vassarstats.net/textbook/)
 * [Convex Optimization](https://web.stanford.edu/~boyd/cvxbook) - Stephen Boyd, Lieven Vandenberghe
 * [Coordinate Geometry (1911)](http://djm.cc/library/Coordinate_Geometry_Fine_Thompson_edited03.pdf) - Henry Buchard Fine, Henry Dallas Thompson (PDF)
+* [Course Of Linear Algebra And Multidimensional Geometry](https://arxiv.org/pdf/math/0405323) - Ruslan Sharipov(PDF)
 * [Differential Equations](http://tutorial.math.lamar.edu/Classes/DE/DE.aspx) - Paul Dawkins (PDF, use download menu to download)
 * [Differential Equations (1922)](http://djm.cc/library/Differential_Equations_Phillips_edited.pdf) - H. B. Phillips (PDF)
 * [Discrete Mathematics: An Open Introduction](https://discrete.openmathbooks.org/dmoi3.html) - Oscar Levin