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| Mirrors > Home > MPE Home > Th. List > addscan2 | Structured version Visualization version GIF version | ||
| Description: Cancellation law for surreal addition. (Contributed by Scott Fenton, 21-Jan-2025.) |
| Ref | Expression |
|---|---|
| addscan2 | ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ∧ 𝐶 ∈ No ) → ((𝐴 +s 𝐶) = (𝐵 +s 𝐶) ↔ 𝐴 = 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sleadd1 27948 | . . 3 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ∧ 𝐶 ∈ No ) → (𝐴 ≤s 𝐵 ↔ (𝐴 +s 𝐶) ≤s (𝐵 +s 𝐶))) | |
| 2 | sleadd1 27948 | . . . 4 ⊢ ((𝐵 ∈ No ∧ 𝐴 ∈ No ∧ 𝐶 ∈ No ) → (𝐵 ≤s 𝐴 ↔ (𝐵 +s 𝐶) ≤s (𝐴 +s 𝐶))) | |
| 3 | 2 | 3com12 1123 | . . 3 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ∧ 𝐶 ∈ No ) → (𝐵 ≤s 𝐴 ↔ (𝐵 +s 𝐶) ≤s (𝐴 +s 𝐶))) |
| 4 | 1, 3 | anbi12d 632 | . 2 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ∧ 𝐶 ∈ No ) → ((𝐴 ≤s 𝐵 ∧ 𝐵 ≤s 𝐴) ↔ ((𝐴 +s 𝐶) ≤s (𝐵 +s 𝐶) ∧ (𝐵 +s 𝐶) ≤s (𝐴 +s 𝐶)))) |
| 5 | sletri3 27719 | . . 3 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → (𝐴 = 𝐵 ↔ (𝐴 ≤s 𝐵 ∧ 𝐵 ≤s 𝐴))) | |
| 6 | 5 | 3adant3 1132 | . 2 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ∧ 𝐶 ∈ No ) → (𝐴 = 𝐵 ↔ (𝐴 ≤s 𝐵 ∧ 𝐵 ≤s 𝐴))) |
| 7 | addscl 27940 | . . . 4 ⊢ ((𝐴 ∈ No ∧ 𝐶 ∈ No ) → (𝐴 +s 𝐶) ∈ No ) | |
| 8 | 7 | 3adant2 1131 | . . 3 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ∧ 𝐶 ∈ No ) → (𝐴 +s 𝐶) ∈ No ) |
| 9 | addscl 27940 | . . . 4 ⊢ ((𝐵 ∈ No ∧ 𝐶 ∈ No ) → (𝐵 +s 𝐶) ∈ No ) | |
| 10 | 9 | 3adant1 1130 | . . 3 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ∧ 𝐶 ∈ No ) → (𝐵 +s 𝐶) ∈ No ) |
| 11 | sletri3 27719 | . . 3 ⊢ (((𝐴 +s 𝐶) ∈ No ∧ (𝐵 +s 𝐶) ∈ No ) → ((𝐴 +s 𝐶) = (𝐵 +s 𝐶) ↔ ((𝐴 +s 𝐶) ≤s (𝐵 +s 𝐶) ∧ (𝐵 +s 𝐶) ≤s (𝐴 +s 𝐶)))) | |
| 12 | 8, 10, 11 | syl2anc 584 | . 2 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ∧ 𝐶 ∈ No ) → ((𝐴 +s 𝐶) = (𝐵 +s 𝐶) ↔ ((𝐴 +s 𝐶) ≤s (𝐵 +s 𝐶) ∧ (𝐵 +s 𝐶) ≤s (𝐴 +s 𝐶)))) |
| 13 | 4, 6, 12 | 3bitr4rd 312 | 1 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ∧ 𝐶 ∈ No ) → ((𝐴 +s 𝐶) = (𝐵 +s 𝐶) ↔ 𝐴 = 𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1086 = wceq 1540 ∈ wcel 2108 class class class wbr 5119 (class class class)co 7405 No csur 27603 ≤s csle 27708 +s cadds 27918 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2707 ax-rep 5249 ax-sep 5266 ax-nul 5276 ax-pow 5335 ax-pr 5402 ax-un 7729 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2065 df-mo 2539 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2809 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3061 df-rmo 3359 df-reu 3360 df-rab 3416 df-v 3461 df-sbc 3766 df-csb 3875 df-dif 3929 df-un 3931 df-in 3933 df-ss 3943 df-pss 3946 df-nul 4309 df-if 4501 df-pw 4577 df-sn 4602 df-pr 4604 df-tp 4606 df-op 4608 df-ot 4610 df-uni 4884 df-int 4923 df-iun 4969 df-br 5120 df-opab 5182 df-mpt 5202 df-tr 5230 df-id 5548 df-eprel 5553 df-po 5561 df-so 5562 df-fr 5606 df-se 5607 df-we 5608 df-xp 5660 df-rel 5661 df-cnv 5662 df-co 5663 df-dm 5664 df-rn 5665 df-res 5666 df-ima 5667 df-pred 6290 df-ord 6355 df-on 6356 df-suc 6358 df-iota 6484 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-riota 7362 df-ov 7408 df-oprab 7409 df-mpo 7410 df-1st 7988 df-2nd 7989 df-frecs 8280 df-wrecs 8311 df-recs 8385 df-1o 8480 df-2o 8481 df-nadd 8678 df-no 27606 df-slt 27607 df-bday 27608 df-sle 27709 df-sslt 27745 df-scut 27747 df-0s 27788 df-made 27807 df-old 27808 df-left 27810 df-right 27811 df-norec2 27908 df-adds 27919 |
| This theorem is referenced by: addscan1 27953 addscan2d 27958 n0s0suc 28286 |
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