Haskell is a purely functional, statically typed programming language that is known for its strong type system, pattern matching, higher-order functions, and lazy evaluation.
It is often used for mathematical and computational purposes, due to its functional approach to programming, which makes it well suited for mathematical operations, as well as its ability to handle complex data structures and algorithms. Haskell also has a rich type system and a growing ecosystem of libraries, making it a popular choice for software development and research.