lambda calculus

This term refers to a specific mathematical framework rather than a general method of calculation. It is used primarily in theoretical computer science and mathematical logic to study the nature of functions and computation. Because it serves as the theoretical basis for functional programming languages like Haskell and Lisp, it is often discussed in the context of type theory and formal semantics.

As a specialized technical term for a singular formal system, it is treated as an uncountable noun. It does not have a plural form in standard academic usage, as one does not refer to multiple "lambda calculi" unless discussing distinct, modified versions of the system in a highly theoretical comparative study.