| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > nofun | Structured version Visualization version GIF version | ||
| Description: A surreal is a function. (Contributed by Scott Fenton, 16-Jun-2011.) |
| Ref | Expression |
|---|---|
| nofun | ⊢ (𝐴 ∈ No → Fun 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elno 27687 | . 2 ⊢ (𝐴 ∈ No ↔ ∃𝑥 ∈ On 𝐴:𝑥⟶{1o, 2o}) | |
| 2 | ffun 6690 | . . 3 ⊢ (𝐴:𝑥⟶{1o, 2o} → Fun 𝐴) | |
| 3 | 2 | rexlimivw 3158 | . 2 ⊢ (∃𝑥 ∈ On 𝐴:𝑥⟶{1o, 2o} → Fun 𝐴) |
| 4 | 1, 3 | sylbi 219 | 1 ⊢ (𝐴 ∈ No → Fun 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2141 ∃wrex 3085 {cpr 4583 Oncon0 6342 Fun wfun 6511 ⟶wf 6513 1oc1o 8425 2oc2o 8426 No csur 27681 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-ext 2733 ax-sep 5245 ax-pow 5321 ax-pr 5389 ax-un 7714 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-sb 2090 df-clab 2740 df-cleq 2753 df-clel 2836 df-ral 3076 df-rex 3086 df-rab 3414 df-v 3455 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-br 5100 df-opab 5162 df-xp 5651 df-rel 5652 df-cnv 5653 df-co 5654 df-dm 5655 df-rn 5656 df-fun 6519 df-fn 6520 df-f 6521 df-no 27684 |
| This theorem is referenced by: nofnbday 27693 elno2 27695 nofv 27698 ltsres 27703 nosepon 27706 noextend 27707 noextendseq 27708 noextenddif 27709 noextendlt 27710 noextendgt 27711 nolesgn2ores 27713 nogesgn1ores 27715 nosepssdm 27727 nolt02olem 27735 nolt02o 27736 nogt01o 27737 nosupno 27744 nosupres 27748 nosupbnd1lem5 27753 nosupbnd1 27755 nosupbnd2lem1 27756 nosupbnd2 27757 noinfno 27759 noinfres 27763 noinfbnd1lem5 27768 noinfbnd1 27770 noinfbnd2lem1 27771 noinfbnd2 27772 noetasuplem2 27775 noetasuplem3 27776 noetasuplem4 27777 noetainflem2 27779 noetainflem4 27781 |
| Copyright terms: Public domain | W3C validator |