mathworld.wolfram.com
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Wolfram MathWorld is a comprehensive online mathematics encyclopedia with in-depth articles on topics like projective spaces, featuring clear definitions, explanations, formulas, diagrams, and reference material.
More resources on Projective Spaces
Vakil's FOAG Notes
Free notes covering projective spaces in detail.
The Stacks Project
Comprehensive reference including projective spaces.
Introduction to Algebraic Geometry
Learn projective spaces with Professor Borcherds! This introductory algebraic geometry course explains key concepts clearly.
Algebraic Geometry
Explore projective spaces with Ravi Vakil's Algebraic Geometry course. Delve into this fascinating topic in mathematics!
ocw.mit.edu
MIT OpenCourseWare provides free, openly available course materials from MIT, including lecture notes, assignments, exams, and video lectures across many subjects. For mathematics, you can explore courses on linear algebra and geometry that cover projective spaces and other advanced topics.
ncatlab.org
nLab is a collaborative online knowledge base for advanced mathematics and related fields, focusing on category theory and higher structures, with formal definitions, explanations, and references for a wide range of concepts, including projective spaces.