nLab: Connection
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Comprehensive page on connections
More resources on Connections
Math Stack Exchange: Resources for Connections
Explore differential geometry connections on Math Stack Exchange! Find resources & expert answers to deepen your understanding.
Differential Geometry
Learn differential geometry through connections with this resource. Explore key concepts and build a strong foundation.
Geometrical Anatomy of Theoretical Physics
Explore the deep connections between geometry and theoretical physics with Frederic Schuller's insightful course. Learn geometrical anatomy!
mathworld.wolfram.com
MathWorld is a comprehensive online mathematics encyclopedia from Wolfram Research, featuring in-depth articles on topics from algebra and geometry to calculus and discrete math. Each entry includes clear explanations, definitions, theorems, formulas, and diagrams to illuminate mathematical concepts.
ocw.mit.edu
MIT OpenCourseWare provides free, openly accessible MIT course materials—including lecture notes, assignments, exams, and video lectures—across hundreds of subjects. It enables self-paced learning and exploration of MIT courses without registration.
nptel.ac.in
NPTEL (National Programme on Technology Enhanced Learning) offers free online engineering and science courses from IITs and IISc, featuring lecture videos, downloadable notes, assignments, and exams, with optional certificates upon completion.