Combinatorics logopeterindia.net
Knowledge Hub

Combinatorics Web Resources

The mathematics of counting, arrangement and structure — textbooks, tools and journals.

26 topics•4 categories•Updated October 2026

Textbooks & Courses

7 entries

Free books and course material.

01Enumerative Combinatorics (Richard Stanley)Author's page for the standard text on counting, with errata and supplementary material. 02Analytic Combinatorics (Flajolet and Sedgewick)Book on analysing combinatorial structures with generating functions, free online. 03Combinatorics Through Guided DiscoveryOpen textbook built around problems. 04Applied Combinatorics (Keller and Trotter)Open textbook and course material. 05Discrete Mathematics: An Open IntroductionFree textbook covering counting and graph theory. 06Graph Theory (Reinhard Diestel)Standard graduate textbook with free electronic edition. 07MIT OpenCourseWare 18.212 Algebraic CombinatoricsUniversity course.

Tools & Data

4 entries

Resources for experimenting with combinatorial objects.

08On-Line Encyclopedia of Integer Sequences (OEIS)Database of integer sequences, including many counting sequences. 09Combinatorial Object ServerGenerate permutations, combinations, partitions and other objects. 10arXiv math.CORecent preprints in combinatorics. 11Erich Friedman's Math StuffCombinatorial geometry and packing problems.

Journals

9 entries

Where combinatorics research is published.

12The Electronic Journal of CombinatoricsOpen-access journal. 13European Journal of CombinatoricsElsevier journal. 14Journal of Combinatorial Theory, Series AElsevier journal on combinatorial structures. 15Journal of Combinatorial Theory, Series BElsevier journal on graph theory and matroids. 16Journal of Algebraic CombinatoricsSpringer journal. 17Journal of Combinatorial DesignsWiley journal on designs and related structures. 18Combinatorics, Probability and ComputingCambridge journal at the border with probability and computer science. 19SIAM Journal on Discrete MathematicsSIAM journal. 20Ars CombinatoriaJournal from Combinatorial Press.

Related Pages

6 entries

Neighbouring pages on this site.

21MathematicsMathematics hub. 22AlgebraAlgebra resources. 23Number TheoryNumber theory resources. 24Probability Theory for AIProbability for AI. 25AlgorithmsAlgorithms hub. 26Theoretical Computer ScienceTheoretical computer science hub.

Frequently Asked Questions

What is combinatorics?

Combinatorics studies finite or countable structures: how many ways objects can be arranged or chosen, and what properties those arrangements have. It includes enumeration, graph theory and design theory.

Where should I start learning combinatorics?

The open textbooks in this directory suit a first course, for example Combinatorics Through Guided Discovery or Discrete Mathematics: An Open Introduction. Stanley's Enumerative Combinatorics and Flajolet and Sedgewick's Analytic Combinatorics are standard next steps.

How is combinatorics used in computer science?

It underlies algorithm analysis, probability, cryptography, coding theory and network design, which is why the field is closely tied to theoretical computer science.

How current is this page?

Links were checked in October 2026. Publisher and journal sites that block automated checks are kept and may need a manual click. This page lists resources rather than teaching the subject.