RIGHT_BETA : (thm -> thm)

- STRUCTURE
- SYNOPSIS
- Beta-reduces a top-level beta-redex on the right-hand side of an equation.
- DESCRIPTION
- When applied to an equational theorem, RIGHT_BETA applies beta-reduction at top level to the right-hand side (only). Variables are renamed if necessary to avoid free variable capture.
A |- s = (\x. t1) t2 ---------------------- RIGHT_BETA A |- s = t1[t2/x]

- FAILURE
- Fails unless the theorem is equational, with its right-hand side being a top-level beta-redex.
- SEEALSO

HOL Kananaskis-14