mathworld.wolfram.com
Unknown
MathWorld is Wolfram Research’s comprehensive online mathematics encyclopedia, offering detailed, well-structured articles on mathematical topics. It provides definitions, theorems, formulas, diagrams, and worked examples across a wide range of subjects, including convolution.
More resources on Convolution
nLab: Convolution
Category-theoretic view in HA
Terry Tao's Blog: Convolution
Notes on convolution in HA context
Harmonic Analysis
Learn convolution and harmonic analysis from Sun-Yung Alice Chang! This course explores key concepts & applications.
ocw.mit.edu
MIT OpenCourseWare (OCW) provides free, openly accessible MIT course materials across a wide range of subjects, enabling self-paced study. You’ll find lecture notes, assignments, exams, and video lectures from MIT courses, covering topics from signals and systems (convolution) to physics, computer science, and mathematics.
nptel.ac.in
NPTEL (National Programme on Technology Enhanced Learning) is a government-backed online learning platform offering free video lectures, notes, assignments, and quizzes for courses across engineering, science, and humanities from IITs and IISc, with optional certification.