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| Mirrors > Home > MPE Home > Th. List > norn | Structured version Visualization version GIF version | ||
| Description: The range of a surreal is a subset of the surreal signs. (Contributed by Scott Fenton, 16-Jun-2011.) |
| Ref | Expression |
|---|---|
| norn | ⊢ (𝐴 ∈ No → ran 𝐴 ⊆ {1o, 2o}) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elno 27627 | . 2 ⊢ (𝐴 ∈ No ↔ ∃𝑥 ∈ On 𝐴:𝑥⟶{1o, 2o}) | |
| 2 | frn 6671 | . . 3 ⊢ (𝐴:𝑥⟶{1o, 2o} → ran 𝐴 ⊆ {1o, 2o}) | |
| 3 | 2 | rexlimivw 3135 | . 2 ⊢ (∃𝑥 ∈ On 𝐴:𝑥⟶{1o, 2o} → ran 𝐴 ⊆ {1o, 2o}) |
| 4 | 1, 3 | sylbi 217 | 1 ⊢ (𝐴 ∈ No → ran 𝐴 ⊆ {1o, 2o}) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2114 ∃wrex 3062 ⊆ wss 3890 {cpr 4570 ran crn 5627 Oncon0 6319 ⟶wf 6490 1oc1o 8393 2oc2o 8394 No csur 27621 |
| 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 5232 ax-pow 5304 ax-pr 5372 ax-un 7684 |
| 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 5632 df-rel 5633 df-cnv 5634 df-co 5635 df-dm 5636 df-rn 5637 df-fun 6496 df-fn 6497 df-f 6498 df-no 27624 |
| This theorem is referenced by: elno2 27636 nofv 27639 ltsres 27644 noextend 27648 noextendseq 27649 nosepssdm 27668 nodenselem8 27673 nolt02olem 27676 nosupno 27685 noinfno 27700 |
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