| 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 27623 | . 2 ⊢ (𝐴 ∈ No ↔ ∃𝑥 ∈ On 𝐴:𝑥⟶{1o, 2o}) | |
| 2 | ffun 6665 | . . 3 ⊢ (𝐴:𝑥⟶{1o, 2o} → Fun 𝐴) | |
| 3 | 2 | rexlimivw 3135 | . 2 ⊢ (∃𝑥 ∈ On 𝐴:𝑥⟶{1o, 2o} → Fun 𝐴) |
| 4 | 1, 3 | sylbi 217 | 1 ⊢ (𝐴 ∈ No → Fun 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2114 ∃wrex 3062 {cpr 4570 Oncon0 6317 Fun wfun 6486 ⟶wf 6488 1oc1o 8391 2oc2o 8392 No csur 27617 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 ax-sep 5231 ax-pow 5302 ax-pr 5370 ax-un 7682 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-ral 3053 df-rex 3063 df-rab 3391 df-v 3432 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-br 5087 df-opab 5149 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-fun 6494 df-fn 6495 df-f 6496 df-no 27620 |
| This theorem is referenced by: nofnbday 27630 elno2 27632 nofv 27635 ltsres 27640 nosepon 27643 noextend 27644 noextendseq 27645 noextenddif 27646 noextendlt 27647 noextendgt 27648 nolesgn2ores 27650 nogesgn1ores 27652 nosepssdm 27664 nolt02olem 27672 nolt02o 27673 nogt01o 27674 nosupno 27681 nosupres 27685 nosupbnd1lem5 27690 nosupbnd1 27692 nosupbnd2lem1 27693 nosupbnd2 27694 noinfno 27696 noinfres 27700 noinfbnd1lem5 27705 noinfbnd1 27707 noinfbnd2lem1 27708 noinfbnd2 27709 noetasuplem2 27712 noetasuplem3 27713 noetasuplem4 27714 noetainflem2 27716 noetainflem4 27718 |
| Copyright terms: Public domain | W3C validator |