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| Mirrors > Home > MPE Home > Th. List > neg0s | Structured version Visualization version GIF version | ||
| Description: Negative surreal zero is surreal zero. (Contributed by Scott Fenton, 20-Aug-2024.) |
| Ref | Expression |
|---|---|
| neg0s | ⊢ ( -us ‘ 0s ) = 0s |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | right0s 27900 | . . . . 5 ⊢ ( R ‘ 0s ) = ∅ | |
| 2 | 1 | imaeq2i 6017 | . . . 4 ⊢ ( -us “ ( R ‘ 0s )) = ( -us “ ∅) |
| 3 | ima0 6036 | . . . 4 ⊢ ( -us “ ∅) = ∅ | |
| 4 | 2, 3 | eqtri 2760 | . . 3 ⊢ ( -us “ ( R ‘ 0s )) = ∅ |
| 5 | left0s 27899 | . . . . 5 ⊢ ( L ‘ 0s ) = ∅ | |
| 6 | 5 | imaeq2i 6017 | . . . 4 ⊢ ( -us “ ( L ‘ 0s )) = ( -us “ ∅) |
| 7 | 6, 3 | eqtri 2760 | . . 3 ⊢ ( -us “ ( L ‘ 0s )) = ∅ |
| 8 | 4, 7 | oveq12i 7372 | . 2 ⊢ (( -us “ ( R ‘ 0s )) |s ( -us “ ( L ‘ 0s ))) = (∅ |s ∅) |
| 9 | 0no 27815 | . . 3 ⊢ 0s ∈ No | |
| 10 | negsval 28031 | . . 3 ⊢ ( 0s ∈ No → ( -us ‘ 0s ) = (( -us “ ( R ‘ 0s )) |s ( -us “ ( L ‘ 0s )))) | |
| 11 | 9, 10 | ax-mp 5 | . 2 ⊢ ( -us ‘ 0s ) = (( -us “ ( R ‘ 0s )) |s ( -us “ ( L ‘ 0s ))) |
| 12 | df-0s 27813 | . 2 ⊢ 0s = (∅ |s ∅) | |
| 13 | 8, 11, 12 | 3eqtr4i 2770 | 1 ⊢ ( -us ‘ 0s ) = 0s |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 ∈ wcel 2114 ∅c0 4274 “ cima 5627 ‘cfv 6492 (class class class)co 7360 No csur 27617 |s ccuts 27765 0s c0s 27811 L cleft 27831 R cright 27832 -us cnegs 28025 |
| 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 5302 ax-pr 5370 ax-un 7682 |
| 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-uni 4852 df-int 4891 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5519 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5577 df-se 5578 df-we 5579 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-pred 6259 df-ord 6320 df-on 6321 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-riota 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-2nd 7936 df-frecs 8224 df-wrecs 8255 df-recs 8304 df-1o 8398 df-2o 8399 df-no 27620 df-lts 27621 df-bday 27622 df-slts 27764 df-cuts 27766 df-0s 27813 df-made 27833 df-old 27834 df-left 27836 df-right 27837 df-norec 27944 df-negs 28027 |
| This theorem is referenced by: neg1s 28033 lt0negs2d 28057 subsfo 28071 subsid1 28074 ltmulnegs1d 28182 mulscan2d 28185 recsex 28225 abssnid 28249 absmuls 28250 abssge0 28251 absnegs 28253 leabss 28254 elzs2 28405 elnnzs 28407 elznns 28408 z12bday 28491 bdayfin 28493 recut 28500 |
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