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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 33849 | . 2 ⊢ (𝐴 ∈ No ↔ ∃𝑥 ∈ On 𝐴:𝑥⟶{1o, 2o}) | |
2 | ffun 6603 | . . 3 ⊢ (𝐴:𝑥⟶{1o, 2o} → Fun 𝐴) | |
3 | 2 | rexlimivw 3211 | . 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 2106 ∃wrex 3065 {cpr 4563 Oncon0 6266 Fun wfun 6427 ⟶wf 6429 1oc1o 8290 2oc2o 8291 No csur 33843 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pr 5352 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-ral 3069 df-rex 3070 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-nul 4257 df-if 4460 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-id 5489 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-no 33846 |
This theorem is referenced by: nofnbday 33855 elno2 33857 nofv 33860 sltres 33865 nosepon 33868 noextend 33869 noextendseq 33870 noextenddif 33871 noextendlt 33872 noextendgt 33873 nolesgn2ores 33875 nogesgn1ores 33877 nosepssdm 33889 nolt02olem 33897 nolt02o 33898 nogt01o 33899 nosupno 33906 nosupres 33910 nosupbnd1lem5 33915 nosupbnd1 33917 nosupbnd2lem1 33918 nosupbnd2 33919 noinfno 33921 noinfres 33925 noinfbnd1lem5 33930 noinfbnd1 33932 noinfbnd2lem1 33933 noinfbnd2 33934 noetasuplem2 33937 noetasuplem3 33938 noetasuplem4 33939 noetainflem2 33941 noetainflem4 33943 |
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