| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 27987 | . . 3 ⊢ -us : No ⟶ No | |
| 2 | negs11 27984 | . . . . 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 3170 | . . 3 ⊢ ∀𝑥 ∈ No ∀𝑦 ∈ No (( -us ‘𝑥) = ( -us ‘𝑦) → 𝑥 = 𝑦) |
| 5 | dff13 7183 | . . 3 ⊢ ( -us : No –1-1→ No ↔ ( -us : No ⟶ No ∧ ∀𝑥 ∈ No ∀𝑦 ∈ No (( -us ‘𝑥) = ( -us ‘𝑦) → 𝑥 = 𝑦))) | |
| 6 | 1, 4, 5 | mpbir2an 711 | . 2 ⊢ -us : No –1-1→ No |
| 7 | negsfo 27988 | . 2 ⊢ -us : No –onto→ No | |
| 8 | df-f1o 6484 | . 2 ⊢ ( -us : No –1-1-onto→ No ↔ ( -us : No –1-1→ No ∧ -us : No –onto→ No )) | |
| 9 | 6, 7, 8 | mpbir2an 711 | 1 ⊢ -us : No –1-1-onto→ No |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1541 ∈ wcel 2110 ∀wral 3045 ⟶wf 6473 –1-1→wf1 6474 –onto→wfo 6475 –1-1-onto→wf1o 6476 ‘cfv 6477 No csur 27571 -us cnegs 27954 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2112 ax-9 2120 ax-10 2143 ax-11 2159 ax-12 2179 ax-ext 2702 ax-rep 5215 ax-sep 5232 ax-nul 5242 ax-pow 5301 ax-pr 5368 ax-un 7663 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2067 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-ral 3046 df-rex 3055 df-rmo 3344 df-reu 3345 df-rab 3394 df-v 3436 df-sbc 3740 df-csb 3849 df-dif 3903 df-un 3905 df-in 3907 df-ss 3917 df-pss 3920 df-nul 4282 df-if 4474 df-pw 4550 df-sn 4575 df-pr 4577 df-tp 4579 df-op 4581 df-ot 4583 df-uni 4858 df-int 4896 df-iun 4941 df-br 5090 df-opab 5152 df-mpt 5171 df-tr 5197 df-id 5509 df-eprel 5514 df-po 5522 df-so 5523 df-fr 5567 df-se 5568 df-we 5569 df-xp 5620 df-rel 5621 df-cnv 5622 df-co 5623 df-dm 5624 df-rn 5625 df-res 5626 df-ima 5627 df-pred 6244 df-ord 6305 df-on 6306 df-suc 6308 df-iota 6433 df-fun 6479 df-fn 6480 df-f 6481 df-f1 6482 df-fo 6483 df-f1o 6484 df-fv 6485 df-riota 7298 df-ov 7344 df-oprab 7345 df-mpo 7346 df-1st 7916 df-2nd 7917 df-frecs 8206 df-wrecs 8237 df-recs 8286 df-1o 8380 df-2o 8381 df-nadd 8576 df-no 27574 df-slt 27575 df-bday 27576 df-sle 27677 df-sslt 27714 df-scut 27716 df-0s 27761 df-made 27781 df-old 27782 df-left 27784 df-right 27785 df-norec 27874 df-norec2 27885 df-adds 27896 df-negs 27956 |
| This theorem is referenced by: (None) |
| Copyright terms: Public domain | W3C validator |