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| Mirrors > Home > MPE Home > Th. List > addslid | Structured version Visualization version GIF version | ||
| Description: Surreal addition to zero is identity. (Contributed by Scott Fenton, 3-Feb-2025.) |
| Ref | Expression |
|---|---|
| addslid | ⊢ (𝐴 ∈ No → ( 0s +s 𝐴) = 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | id 22 | . . 3 ⊢ (𝐴 ∈ No → 𝐴 ∈ No ) | |
| 2 | 0no 27801 | . . . 4 ⊢ 0s ∈ No | |
| 3 | 2 | a1i 11 | . . 3 ⊢ (𝐴 ∈ No → 0s ∈ No ) |
| 4 | 1, 3 | addscomd 27959 | . 2 ⊢ (𝐴 ∈ No → (𝐴 +s 0s ) = ( 0s +s 𝐴)) |
| 5 | addsrid 27956 | . 2 ⊢ (𝐴 ∈ No → (𝐴 +s 0s ) = 𝐴) | |
| 6 | 4, 5 | eqtr3d 2774 | 1 ⊢ (𝐴 ∈ No → ( 0s +s 𝐴) = 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 (class class class)co 7367 No csur 27603 0s c0s 27797 +s cadds 27951 |
| 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 7689 |
| 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 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-se 5585 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6266 df-ord 6327 df-on 6328 df-suc 6330 df-iota 6455 df-fun 6501 df-fn 6502 df-f 6503 df-f1 6504 df-fo 6505 df-f1o 6506 df-fv 6507 df-riota 7324 df-ov 7370 df-oprab 7371 df-mpo 7372 df-1st 7942 df-2nd 7943 df-frecs 8231 df-wrecs 8262 df-recs 8311 df-1o 8405 df-2o 8406 df-no 27606 df-lts 27607 df-bday 27608 df-slts 27750 df-cuts 27752 df-0s 27799 df-made 27819 df-old 27820 df-left 27822 df-right 27823 df-norec2 27941 df-adds 27952 |
| This theorem is referenced by: ltaddspos2d 28004 negsdi 28042 negsval2 28058 subadds 28062 posdifsd 28090 subsge0d 28092 precsexlem11 28209 nnsge1 28335 1n0s 28340 n0lts1e0 28360 n0p1nns 28363 dfnns2 28364 eucliddivs 28368 peano5uzs 28396 zsoring 28401 twocut 28415 expsp1 28421 pw2cut 28452 bdaypw2n0bndlem 28455 bdayfinbndlem1 28459 z12bdaylem1 28462 |
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