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This extends `derive_functional_induction` to work with structural recursion as well. It produces the less general, more concrete induction rule where the induction hypothesis is specialized for every argument of the recursive call, not just the the one that the function is recursing on. Care is taken so that the induction principle and it's motive take the arguments in the same order as the original function. While I was it, also makes sure that the order of the cases in the induction principle matches the order of recursive calls in the function better. --------- Co-authored-by: David Thrane Christiansen <david@davidchristiansen.dk> Co-authored-by: Leonardo de Moura <leomoura@amazon.com> |
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