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| Mirrors > Home > MPE Home > Th. List > sltsubsubbd | Structured version Visualization version GIF version | ||
| Description: Equivalence for the surreal less-than relationship between differences. (Contributed by Scott Fenton, 6-Feb-2025.) |
| Ref | Expression |
|---|---|
| sltsubsubbd.1 | ⊢ (𝜑 → 𝐴 ∈ No ) |
| sltsubsubbd.2 | ⊢ (𝜑 → 𝐵 ∈ No ) |
| sltsubsubbd.3 | ⊢ (𝜑 → 𝐶 ∈ No ) |
| sltsubsubbd.4 | ⊢ (𝜑 → 𝐷 ∈ No ) |
| Ref | Expression |
|---|---|
| sltsubsubbd | ⊢ (𝜑 → ((𝐴 -s 𝐶) <s (𝐵 -s 𝐷) ↔ (𝐴 -s 𝐵) <s (𝐶 -s 𝐷))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sltsubsubbd.1 | . . . . 5 ⊢ (𝜑 → 𝐴 ∈ No ) | |
| 2 | sltsubsubbd.3 | . . . . 5 ⊢ (𝜑 → 𝐶 ∈ No ) | |
| 3 | npcans 28044 | . . . . 5 ⊢ ((𝐴 ∈ No ∧ 𝐶 ∈ No ) → ((𝐴 -s 𝐶) +s 𝐶) = 𝐴) | |
| 4 | 1, 2, 3 | syl2anc 584 | . . . 4 ⊢ (𝜑 → ((𝐴 -s 𝐶) +s 𝐶) = 𝐴) |
| 5 | sltsubsubbd.2 | . . . . 5 ⊢ (𝜑 → 𝐵 ∈ No ) | |
| 6 | npcans 28044 | . . . . 5 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → ((𝐴 -s 𝐵) +s 𝐵) = 𝐴) | |
| 7 | 1, 5, 6 | syl2anc 584 | . . . 4 ⊢ (𝜑 → ((𝐴 -s 𝐵) +s 𝐵) = 𝐴) |
| 8 | 4, 7 | eqtr4d 2772 | . . 3 ⊢ (𝜑 → ((𝐴 -s 𝐶) +s 𝐶) = ((𝐴 -s 𝐵) +s 𝐵)) |
| 9 | 5, 2 | addscomd 27937 | . . . . 5 ⊢ (𝜑 → (𝐵 +s 𝐶) = (𝐶 +s 𝐵)) |
| 10 | 9 | oveq1d 7371 | . . . 4 ⊢ (𝜑 → ((𝐵 +s 𝐶) +s ( -us ‘𝐷)) = ((𝐶 +s 𝐵) +s ( -us ‘𝐷))) |
| 11 | sltsubsubbd.4 | . . . . . . 7 ⊢ (𝜑 → 𝐷 ∈ No ) | |
| 12 | 5, 11 | subsvald 28030 | . . . . . 6 ⊢ (𝜑 → (𝐵 -s 𝐷) = (𝐵 +s ( -us ‘𝐷))) |
| 13 | 12 | oveq1d 7371 | . . . . 5 ⊢ (𝜑 → ((𝐵 -s 𝐷) +s 𝐶) = ((𝐵 +s ( -us ‘𝐷)) +s 𝐶)) |
| 14 | 11 | negscld 28006 | . . . . . 6 ⊢ (𝜑 → ( -us ‘𝐷) ∈ No ) |
| 15 | 5, 14, 2 | adds32d 27977 | . . . . 5 ⊢ (𝜑 → ((𝐵 +s ( -us ‘𝐷)) +s 𝐶) = ((𝐵 +s 𝐶) +s ( -us ‘𝐷))) |
| 16 | 13, 15 | eqtrd 2769 | . . . 4 ⊢ (𝜑 → ((𝐵 -s 𝐷) +s 𝐶) = ((𝐵 +s 𝐶) +s ( -us ‘𝐷))) |
| 17 | 2, 11 | subsvald 28030 | . . . . . 6 ⊢ (𝜑 → (𝐶 -s 𝐷) = (𝐶 +s ( -us ‘𝐷))) |
| 18 | 17 | oveq1d 7371 | . . . . 5 ⊢ (𝜑 → ((𝐶 -s 𝐷) +s 𝐵) = ((𝐶 +s ( -us ‘𝐷)) +s 𝐵)) |
| 19 | 2, 14, 5 | adds32d 27977 | . . . . 5 ⊢ (𝜑 → ((𝐶 +s ( -us ‘𝐷)) +s 𝐵) = ((𝐶 +s 𝐵) +s ( -us ‘𝐷))) |
| 20 | 18, 19 | eqtrd 2769 | . . . 4 ⊢ (𝜑 → ((𝐶 -s 𝐷) +s 𝐵) = ((𝐶 +s 𝐵) +s ( -us ‘𝐷))) |
| 21 | 10, 16, 20 | 3eqtr4d 2779 | . . 3 ⊢ (𝜑 → ((𝐵 -s 𝐷) +s 𝐶) = ((𝐶 -s 𝐷) +s 𝐵)) |
| 22 | 8, 21 | breq12d 5109 | . 2 ⊢ (𝜑 → (((𝐴 -s 𝐶) +s 𝐶) <s ((𝐵 -s 𝐷) +s 𝐶) ↔ ((𝐴 -s 𝐵) +s 𝐵) <s ((𝐶 -s 𝐷) +s 𝐵))) |
| 23 | 1, 2 | subscld 28032 | . . 3 ⊢ (𝜑 → (𝐴 -s 𝐶) ∈ No ) |
| 24 | 5, 11 | subscld 28032 | . . 3 ⊢ (𝜑 → (𝐵 -s 𝐷) ∈ No ) |
| 25 | 23, 24, 2 | sltadd1d 27968 | . 2 ⊢ (𝜑 → ((𝐴 -s 𝐶) <s (𝐵 -s 𝐷) ↔ ((𝐴 -s 𝐶) +s 𝐶) <s ((𝐵 -s 𝐷) +s 𝐶))) |
| 26 | 1, 5 | subscld 28032 | . . 3 ⊢ (𝜑 → (𝐴 -s 𝐵) ∈ No ) |
| 27 | 2, 11 | subscld 28032 | . . 3 ⊢ (𝜑 → (𝐶 -s 𝐷) ∈ No ) |
| 28 | 26, 27, 5 | sltadd1d 27968 | . 2 ⊢ (𝜑 → ((𝐴 -s 𝐵) <s (𝐶 -s 𝐷) ↔ ((𝐴 -s 𝐵) +s 𝐵) <s ((𝐶 -s 𝐷) +s 𝐵))) |
| 29 | 22, 25, 28 | 3bitr4d 311 | 1 ⊢ (𝜑 → ((𝐴 -s 𝐶) <s (𝐵 -s 𝐷) ↔ (𝐴 -s 𝐵) <s (𝐶 -s 𝐷))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 = wceq 1541 ∈ wcel 2113 class class class wbr 5096 ‘cfv 6490 (class class class)co 7356 No csur 27605 <s cslt 27606 +s cadds 27929 -us cnegs 27988 -s csubs 27989 |
| 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 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2706 ax-rep 5222 ax-sep 5239 ax-nul 5249 ax-pow 5308 ax-pr 5375 ax-un 7678 |
| 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 2068 df-mo 2537 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2809 df-nfc 2883 df-ne 2931 df-ral 3050 df-rex 3059 df-rmo 3348 df-reu 3349 df-rab 3398 df-v 3440 df-sbc 3739 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4579 df-pr 4581 df-tp 4583 df-op 4585 df-ot 4587 df-uni 4862 df-int 4901 df-iun 4946 df-br 5097 df-opab 5159 df-mpt 5178 df-tr 5204 df-id 5517 df-eprel 5522 df-po 5530 df-so 5531 df-fr 5575 df-se 5576 df-we 5577 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 df-pred 6257 df-ord 6318 df-on 6319 df-suc 6321 df-iota 6446 df-fun 6492 df-fn 6493 df-f 6494 df-f1 6495 df-fo 6496 df-f1o 6497 df-fv 6498 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-1st 7931 df-2nd 7932 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-1o 8395 df-2o 8396 df-nadd 8592 df-no 27608 df-slt 27609 df-bday 27610 df-sle 27711 df-sslt 27748 df-scut 27750 df-0s 27795 df-made 27815 df-old 27816 df-left 27818 df-right 27819 df-norec 27908 df-norec2 27919 df-adds 27930 df-negs 27990 df-subs 27991 |
| This theorem is referenced by: sltsubsub3bd 28054 slesubsub3bd 28057 mulsproplem6 28090 mulsproplem7 28091 mulsproplem8 28092 |
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