[lambda-calculus] The conversion of an expression to an application of a lambda
abstraction to an argument expression. Some subterm of the original expression
becomes the argument of the abstraction and the rest becomes its body. E.g.
4+1 --> (\ x . x+1) 4
The opposite of beta abstraction is beta reduction. These are the two
kinds of beta conversion.
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beta conversion » Betamaxed » beta reduction