Description: A non-zero surreal has a reciprocal. (Contributed by Scott Fenton, 16-Mar-2025)
Ref | Expression | ||
---|---|---|---|
Hypotheses | recsexd.1 | |
|
recsexd.2 | No typesetting found for |- ( ph -> A =/= 0s ) with typecode |- | ||
Assertion | recsexd | Could not format assertion : No typesetting found for |- ( ph -> E. x e. No ( A x.s x ) = 1s ) with typecode |- |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | recsexd.1 | |
|
2 | recsexd.2 | Could not format ( ph -> A =/= 0s ) : No typesetting found for |- ( ph -> A =/= 0s ) with typecode |- | |
3 | recsex | Could not format ( ( A e. No /\ A =/= 0s ) -> E. x e. No ( A x.s x ) = 1s ) : No typesetting found for |- ( ( A e. No /\ A =/= 0s ) -> E. x e. No ( A x.s x ) = 1s ) with typecode |- | |
4 | 1 2 3 | syl2anc | Could not format ( ph -> E. x e. No ( A x.s x ) = 1s ) : No typesetting found for |- ( ph -> E. x e. No ( A x.s x ) = 1s ) with typecode |- |