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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 27778 | . 2 ⊢ (𝐴 ∈ No ↔ ∃𝑥 ∈ On 𝐴:𝑥⟶{1o, 2o}) | |
| 2 | frn 6716 | . . 3 ⊢ (𝐴:𝑥⟶{1o, 2o} → ran 𝐴 ⊆ {1o, 2o}) | |
| 3 | 2 | rexlimivw 3168 | . 2 ⊢ (∃𝑥 ∈ On 𝐴:𝑥⟶{1o, 2o} → ran 𝐴 ⊆ {1o, 2o}) |
| 4 | 1, 3 | sylbi 220 | 1 ⊢ (𝐴 ∈ No → ran 𝐴 ⊆ {1o, 2o}) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2149 ∃wrex 3095 ⊆ wss 3913 {cpr 4596 ran crn 5665 Oncon0 6363 ⟶wf 6535 1oc1o 8448 2oc2o 8449 No csur 27772 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-ext 2741 ax-sep 5261 ax-pow 5339 ax-pr 5407 ax-un 7735 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-sb 2098 df-clab 2748 df-cleq 2761 df-clel 2844 df-ral 3086 df-rex 3096 df-rab 3424 df-v 3465 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-br 5114 df-opab 5178 df-xp 5670 df-rel 5671 df-cnv 5672 df-co 5673 df-dm 5674 df-rn 5675 df-fun 6541 df-fn 6542 df-f 6543 df-no 27775 |
| This theorem is referenced by: elno2 27786 nofv 27789 ltsres 27794 noextend 27798 noextendseq 27799 nosepssdm 27818 nodenselem8 27823 nolt02olem 27826 nosupno 27835 noinfno 27850 |
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