War heroes, like Paul Revere, are well known. However, there are also war heroes that a lot of people have never heard of. Unheralded as they maybe, they are worthy of commendation for very few people are willing to endure what these 25 war heroes you probably never heard of have endured. Subscribe to List25.
Lambda calculus. Lambda calculus (also written as Î»-calculus) is a formal system in mathematical logic for expressing computation based on function abstraction and application using variable binding and substitution.
DEFINITION of 'Lambda'. The ratio of the percentage change in an option contract's price to the percentage change in the option's underlying price. Lambda is one of the Greeks â a collection of risk measures or risk sensitivities that are frequently used in options and derivatives analysis. Each Greek measures the sensitivity of a value in relation to a small change in an underlying parameter.