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Mirrors > Home > MPE Home > Th. List > Mathboxes > 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 33776 | . 2 ⊢ (𝐴 ∈ No ↔ ∃𝑥 ∈ On 𝐴:𝑥⟶{1o, 2o}) | |
2 | ffun 6587 | . . 3 ⊢ (𝐴:𝑥⟶{1o, 2o} → Fun 𝐴) | |
3 | 2 | rexlimivw 3210 | . 2 ⊢ (∃𝑥 ∈ On 𝐴:𝑥⟶{1o, 2o} → Fun 𝐴) |
4 | 1, 3 | sylbi 216 | 1 ⊢ (𝐴 ∈ No → Fun 𝐴) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2108 ∃wrex 3064 {cpr 4560 Oncon0 6251 Fun wfun 6412 ⟶wf 6414 1oc1o 8260 2oc2o 8261 No csur 33770 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pr 5347 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-ral 3068 df-rex 3069 df-reu 3070 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4254 df-if 4457 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4837 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-id 5480 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-no 33773 |
This theorem is referenced by: nofnbday 33782 elno2 33784 nofv 33787 sltres 33792 nosepon 33795 noextend 33796 noextendseq 33797 noextenddif 33798 noextendlt 33799 noextendgt 33800 nolesgn2ores 33802 nogesgn1ores 33804 nosepssdm 33816 nolt02olem 33824 nolt02o 33825 nogt01o 33826 nosupno 33833 nosupres 33837 nosupbnd1lem5 33842 nosupbnd1 33844 nosupbnd2lem1 33845 nosupbnd2 33846 noinfno 33848 noinfres 33852 noinfbnd1lem5 33857 noinfbnd1 33859 noinfbnd2lem1 33860 noinfbnd2 33861 noetasuplem2 33864 noetasuplem3 33865 noetasuplem4 33866 noetainflem2 33868 noetainflem4 33870 |
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