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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 27888 | . . . . 5 ⊢ ( R ‘ 0s ) = ∅ | |
| 2 | 1 | imaeq2i 6025 | . . . 4 ⊢ ( -us “ ( R ‘ 0s )) = ( -us “ ∅) |
| 3 | ima0 6044 | . . . 4 ⊢ ( -us “ ∅) = ∅ | |
| 4 | 2, 3 | eqtri 2760 | . . 3 ⊢ ( -us “ ( R ‘ 0s )) = ∅ |
| 5 | left0s 27887 | . . . . 5 ⊢ ( L ‘ 0s ) = ∅ | |
| 6 | 5 | imaeq2i 6025 | . . . 4 ⊢ ( -us “ ( L ‘ 0s )) = ( -us “ ∅) |
| 7 | 6, 3 | eqtri 2760 | . . 3 ⊢ ( -us “ ( L ‘ 0s )) = ∅ |
| 8 | 4, 7 | oveq12i 7381 | . 2 ⊢ (( -us “ ( R ‘ 0s )) |s ( -us “ ( L ‘ 0s ))) = (∅ |s ∅) |
| 9 | 0no 27803 | . . 3 ⊢ 0s ∈ No | |
| 10 | negsval 28019 | . . 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 27801 | . 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 5635 ‘cfv 6500 (class class class)co 7369 No csur 27605 |s ccuts 27753 0s c0s 27799 L cleft 27819 R cright 27820 -us cnegs 28013 |
| 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 5213 ax-sep 5232 ax-nul 5242 ax-pow 5308 ax-pr 5376 ax-un 7691 |
| 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 5527 df-eprel 5532 df-po 5540 df-so 5541 df-fr 5585 df-se 5586 df-we 5587 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-pred 6267 df-ord 6328 df-on 6329 df-suc 6331 df-iota 6456 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-fv 6508 df-riota 7326 df-ov 7372 df-oprab 7373 df-mpo 7374 df-2nd 7945 df-frecs 8233 df-wrecs 8264 df-recs 8313 df-1o 8407 df-2o 8408 df-no 27608 df-lts 27609 df-bday 27610 df-slts 27752 df-cuts 27754 df-0s 27801 df-made 27821 df-old 27822 df-left 27824 df-right 27825 df-norec 27932 df-negs 28015 |
| This theorem is referenced by: neg1s 28021 lt0negs2d 28045 subsfo 28059 subsid1 28062 ltmulnegs1d 28170 mulscan2d 28173 recsex 28213 abssnid 28237 absmuls 28238 abssge0 28239 absnegs 28241 leabss 28242 elzs2 28393 elnnzs 28395 elznns 28396 z12bday 28479 bdayfin 28481 recut 28488 |
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