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| Mirrors > Home > MPE Home > Th. List > negsf1o | Structured version Visualization version GIF version | ||
| Description: Surreal negation is a bijection. (Contributed by Scott Fenton, 3-Feb-2025.) |
| Ref | Expression |
|---|---|
| negsf1o | ⊢ -us : No –1-1-onto→ No |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | negsf 28063 | . . 3 ⊢ -us : No ⟶ No | |
| 2 | negs11 28060 | . . . . 5 ⊢ ((𝑥 ∈ No ∧ 𝑦 ∈ No ) → (( -us ‘𝑥) = ( -us ‘𝑦) ↔ 𝑥 = 𝑦)) | |
| 3 | 2 | biimpd 229 | . . . 4 ⊢ ((𝑥 ∈ No ∧ 𝑦 ∈ No ) → (( -us ‘𝑥) = ( -us ‘𝑦) → 𝑥 = 𝑦)) |
| 4 | 3 | rgen2 3178 | . . 3 ⊢ ∀𝑥 ∈ No ∀𝑦 ∈ No (( -us ‘𝑥) = ( -us ‘𝑦) → 𝑥 = 𝑦) |
| 5 | dff13 7200 | . . 3 ⊢ ( -us : No –1-1→ No ↔ ( -us : No ⟶ No ∧ ∀𝑥 ∈ No ∀𝑦 ∈ No (( -us ‘𝑥) = ( -us ‘𝑦) → 𝑥 = 𝑦))) | |
| 6 | 1, 4, 5 | mpbir2an 712 | . 2 ⊢ -us : No –1-1→ No |
| 7 | negsfo 28064 | . 2 ⊢ -us : No –onto→ No | |
| 8 | df-f1o 6497 | . 2 ⊢ ( -us : No –1-1-onto→ No ↔ ( -us : No –1-1→ No ∧ -us : No –onto→ No )) | |
| 9 | 6, 7, 8 | mpbir2an 712 | 1 ⊢ -us : No –1-1-onto→ No |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1542 ∈ wcel 2114 ∀wral 3052 ⟶wf 6486 –1-1→wf1 6487 –onto→wfo 6488 –1-1-onto→wf1o 6489 ‘cfv 6490 No csur 27622 -us cnegs 28030 |
| 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-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5212 ax-sep 5231 ax-nul 5241 ax-pow 5300 ax-pr 5368 ax-un 7680 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3063 df-rmo 3343 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-tp 4573 df-op 4575 df-ot 4577 df-uni 4852 df-int 4891 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5517 df-eprel 5522 df-po 5530 df-so 5531 df-fr 5575 df-se 5576 df-we 5577 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 df-pred 6257 df-ord 6318 df-on 6319 df-suc 6321 df-iota 6446 df-fun 6492 df-fn 6493 df-f 6494 df-f1 6495 df-fo 6496 df-f1o 6497 df-fv 6498 df-riota 7315 df-ov 7361 df-oprab 7362 df-mpo 7363 df-1st 7933 df-2nd 7934 df-frecs 8222 df-wrecs 8253 df-recs 8302 df-1o 8396 df-2o 8397 df-nadd 8593 df-no 27625 df-lts 27626 df-bday 27627 df-les 27728 df-slts 27769 df-cuts 27771 df-0s 27818 df-made 27838 df-old 27839 df-left 27841 df-right 27842 df-norec 27949 df-norec2 27960 df-adds 27971 df-negs 28032 |
| This theorem is referenced by: (None) |
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