Functional Integration

Functional integration is a mathematical method used to evaluate complex systems, especially in fields like quantum physics and statistics. It involves integrating over all possible configurations or functions that a system can have, rather than just over simple variables. This approach sums up every potential state the system might be in, allowing scientists to calculate probabilities, averages, or behaviors of intricate, dynamic systems. Think of it as exploring every possible way a system can behave and combining those outcomes to understand its overall properties.