Legally Free

Some legally free resources:

• Organisation
  • AMS Open Math Notes
  • MIT OpenCourseWare
  • ISI Open Course Ware
  • American Institute of Mathematics Open Textbook Initative
  • UPenn Online Books Page
  • Tau Beta Pi (UCB Exam and Syllabus Database)
  • \(\pi\)-Base
  • Math Counterexamples
  • EqWorld
  • Merlot (Multimedia Education Resource for Learning and Online Teaching)
  • Lambda Calculus Visualizations
  • Free Mathematics Web Journals
• Student
  • Dexter Chua
  • Andrew Lin
  • Eigentaylor (LA)
  • Ang Yan Sheng (ANT, Comm Alg, MT, SCV)
  • Clement Yung (Jech solutions)
  • Student Set Theory and Combinatorics Seminar
• Professors
  • Terence Tao
  • Sheldon Axler (LADR, MT)
  • Sergei Treil (LADW)
  • Cayley Graph Plotting
  • William F. Trench (Intro RA)
  • Michael Taylor (Intro RA, intro CA, MVA, DG, PDEs, etc)
  • Keith Conrad (LA, Algebra, ENT, ANT, Analysis, Topology)
  • Ivan Khatchatourian (Topology)
  • Gerald B. Folland (MVA)
  • Ravi Vakil’s The Rising Sea (AG)
  • Jean-Pierre Demailly (Complex Analytic and Differential Geometry, Potential theory, Hodge theory, AG)
  • J.S. Milne (Algebra, Lie Algebra, AG, ANT, Etale Cohomology, Hodge Cycles, Motives, Shimura Varieties, Elliptic Curves)
  • Charles Weibel (Motivic Cohomology, K-Theory)
  • F. W. Lawvere
• Qualifying Exams
  • Make Me A Qual
  • Stanford Past and Practice Qualifying Exams
  • UW-Madison Qualifying Exams
  • West Virginia University Qualifying Exams
• Social
  • Mathematics Stack Exchange
  • MathOverflow
  • Mathcord (Discord)
• YouTube
  • Richard E Borcherds (Intro NT, Complex Analysis, Algebra, Categories, Lie Groups, Comm Alg, AG, AT, Rep Theory, Hom Alg, Modular Forms)
  • Sheldon Axler (LADR Lectures)
  • Timothy Gowers
  • Antonio Montalban (Set Theory and Logic)
  • Mathcord Lectures (Logic)
  • James ash (FA, MT)