Metamath Proof Explorer


Theorem recsexd

Description: A non-zero surreal has a reciprocal. (Contributed by Scott Fenton, 16-Mar-2025)

Ref Expression
Hypotheses recsexd.1 φANo
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 |-

Proof

Step Hyp Ref Expression
1 recsexd.1 φANo
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 |-