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posets

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C++20 library and tools for Riordan posets: posets whose order relation is a binary Riordan matrix. Enumerates Riordan poset matrices, counts Riordan posets up to isomorphism (verified to n = 28), recognizes Riordan posets, and decides when a Riordan poset is infinite. Includes tests, data and independent verification.

  • Updated Oct 26, 2026
  • C++
DiscreteX

Modern, header-only ISO C++20 library for finite discrete mathematics and algorithmic structures. Unified bridge architecture across graphs, automata, logic, order theory, and abstract algebra with zero external dependencies.

  • Updated Oct 4, 2026
  • C++

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