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Everything about Operad

Generalization of associativity properties

In mathematics, an operad is a structure that consists of abstract operations, each one having a fixed finite number of inputs (arguments) and one output, as well as a specification of how to compose these operations. Given an operad, one defines an algebra over to be a set together with concrete operations on this set that behave just like the abstract operations of. For instance, there is a Lie operad such that the algebras over are precisely the Lie algebras; in a sense abstractly encodes the operations that are common to all Lie algebras. An operad is to its algebras as a group is to its group actions. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: OperadA 5-minute orientation
  2. Skim a recent paper: The minimal model of Rota-Baxter operad with arbitrary weightInfluential work since 2022
  3. Pick up a classic book: Algebraic operadsThe most-reprinted book on the subject
  4. Read the landmark paper: Combinatorial operad actions on cochainsCited 92 times
  5. Go sideways: A∞-operadA closely related topic
  6. Go sideways: E∞-operadA closely related topic

📖 Definitions

Noun A set of operations, each one having a fixed finite number of arguments and one output, which can be composed with others.

🏆 Landmark papers (most cited)

🆕 Influential since 2022

📚 Books worth reading

Ranked by number of editions on Open Library, a rough measure of how lasting a book is.

🔗 Related topics