ocw.mit.edu
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MIT OpenCourseWare (OCW) is a free, public repository of MIT course materials. It provides lecture notes, assignments, exams, and videos for a wide range of coursesāuseful for self-study in topics related to spectral graph theory such as linear algebra, discrete mathematics, and algorithms.
More resources on Spectral Graph Theory
Fan Chung's Research Page
Resources and papers on spectral graph theory
Spectral and Algebraic Graph Theory
Learn spectral and algebraic graph theory with this course by Daniel A. Spielman. Explore connections between linear algebra and graph properties!
Spectral Graph Theory
Spectral Graph Theory - A book resource
mathworld.wolfram.com
MathWorld is a comprehensive online mathematics encyclopedia by Wolfram that provides detailed, rigorously written articles on a wide range of topics. For spectral graph theory, you can find entries on graphs, eigenvalues, Laplacians, graph spectra, and related theorems, definitions, and illustrative examples.
nptel.ac.in
NPTEL is a free online learning platform from Indian institutes offering university-level courses with video lectures, readings, and assignments. It includes Mathematics and Graph Theory courses that cover topics such as spectral graph theory, linear algebra, and related algorithms.