mathworld.wolfram.com
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MathWorld is an online mathematics encyclopedia by Wolfram Research offering detailed, accessible articles on topics across mathematics, including combinatorics and design theory. Each entry provides definitions, explanations, formulas, diagrams or examples, and references, covering concepts like block designs, Steiner systems, and incidence structures.
More resources on Combinatorial Designs
MathWorld - Block Design
Detailed entry on block designs and related concepts
HandWiki - Combinatorial Design
Comprehensive overview of combinatorial designs
Combinatorial Designs: Constructions and Analysis
Combinatorial Designs: Constructions and Analysis - A book resource
ocw.mit.edu
MIT OpenCourseWare (OCW) offers free, openly accessible MIT course materials, including lecture notes, assignments, and exams, across a wide range of subjects. You can browse math and science coursesāsuch as discrete math and combinatoricsāto study topics relevant to combinatorial designs.
Enumerative Combinatorics, Volume 2
Enumerative Combinatorics, Volume 2 - A book resource
nptel.ac.in
nptel.ac.in is India's National Programme on Technology Enhanced Learning, offering free online courses and video lectures from IITs and IISc across engineering and science. It provides comprehensive course materialsāvideo lectures, notes, assignments, quizzes, and certificatesācovering topics like discrete mathematics and combinatorics relevant to combinatorial designs.