changeset 4628 | 0c7e97836e3c |
parent 3390 | 0c7625196d95 |
child 5183 | 89f162de39cf |
--- a/src/HOL/Power.thy Thu Feb 12 17:43:53 1998 +0100 +++ b/src/HOL/Power.thy Thu Feb 12 17:53:05 1998 +0100 @@ -19,7 +19,7 @@ binomial_0 "(0 choose k) = (if k = 0 then 1 else 0)" binomial_Suc "(Suc n choose k) = - (if k = 0 then 1 else (n choose pred k) + (n choose k))" + (if k = 0 then 1 else (n choose (k - 1)) + (n choose k))" end