Isabelle

Isabelle is a computer software tool used for formal verification, meaning it helps mathematically prove that complex systems, such as software programs or hardware designs, work correctly according to their specifications. It allows users to create precise logical models and then rigorously check them for correctness, ensuring reliability and safety. Think of it as an advanced proof assistant that reduces human error in verifying critical systems like aircraft controls or cybersecurity protocols, by providing a formal, mathematical foundation for analyzing and validating their behavior.