theorem srecauxeq1d (_G: wff) (_S1 _S2: set) (n: nat): $ _G -> _S1 == _S2 $ > $ _G -> srecaux _S1 n = srecaux _S2 n $;
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | hyp _h | _G -> _S1 == _S2 | |
| 2 | eqidd | _G -> n = n | |
| 3 | 1, 2 | srecauxeqd | _G -> srecaux _S1 n = srecaux _S2 n |