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| Mirrors > Home > MPE Home > Th. List > sltsubsub2bd | Structured version Visualization version GIF version | ||
| Description: Equivalence for the surreal less-than relationship between differences. (Contributed by Scott Fenton, 21-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 |
|---|---|
| sltsubsub2bd | ⊢ (𝜑 → ((𝐴 -s 𝐵) <s (𝐶 -s 𝐷) ↔ (𝐷 -s 𝐶) <s (𝐵 -s 𝐴))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sltsubsubbd.4 | . . . 4 ⊢ (𝜑 → 𝐷 ∈ No ) | |
| 2 | sltsubsubbd.3 | . . . 4 ⊢ (𝜑 → 𝐶 ∈ No ) | |
| 3 | 1, 2 | subscld 28024 | . . 3 ⊢ (𝜑 → (𝐷 -s 𝐶) ∈ No ) |
| 4 | sltsubsubbd.2 | . . . 4 ⊢ (𝜑 → 𝐵 ∈ No ) | |
| 5 | sltsubsubbd.1 | . . . 4 ⊢ (𝜑 → 𝐴 ∈ No ) | |
| 6 | 4, 5 | subscld 28024 | . . 3 ⊢ (𝜑 → (𝐵 -s 𝐴) ∈ No ) |
| 7 | 3, 6 | sltnegd 28010 | . 2 ⊢ (𝜑 → ((𝐷 -s 𝐶) <s (𝐵 -s 𝐴) ↔ ( -us ‘(𝐵 -s 𝐴)) <s ( -us ‘(𝐷 -s 𝐶)))) |
| 8 | 4, 5 | negsubsdi2d 28041 | . . 3 ⊢ (𝜑 → ( -us ‘(𝐵 -s 𝐴)) = (𝐴 -s 𝐵)) |
| 9 | 1, 2 | negsubsdi2d 28041 | . . 3 ⊢ (𝜑 → ( -us ‘(𝐷 -s 𝐶)) = (𝐶 -s 𝐷)) |
| 10 | 8, 9 | breq12d 5137 | . 2 ⊢ (𝜑 → (( -us ‘(𝐵 -s 𝐴)) <s ( -us ‘(𝐷 -s 𝐶)) ↔ (𝐴 -s 𝐵) <s (𝐶 -s 𝐷))) |
| 11 | 7, 10 | bitr2d 280 | 1 ⊢ (𝜑 → ((𝐴 -s 𝐵) <s (𝐶 -s 𝐷) ↔ (𝐷 -s 𝐶) <s (𝐵 -s 𝐴))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∈ wcel 2109 class class class wbr 5124 ‘cfv 6536 (class class class)co 7410 No csur 27608 <s cslt 27609 -us cnegs 27982 -s csubs 27983 |
| 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 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2708 ax-rep 5254 ax-sep 5271 ax-nul 5281 ax-pow 5340 ax-pr 5407 ax-un 7734 |
| 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 2066 df-mo 2540 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2810 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3062 df-rmo 3364 df-reu 3365 df-rab 3421 df-v 3466 df-sbc 3771 df-csb 3880 df-dif 3934 df-un 3936 df-in 3938 df-ss 3948 df-pss 3951 df-nul 4314 df-if 4506 df-pw 4582 df-sn 4607 df-pr 4609 df-tp 4611 df-op 4613 df-ot 4615 df-uni 4889 df-int 4928 df-iun 4974 df-br 5125 df-opab 5187 df-mpt 5207 df-tr 5235 df-id 5553 df-eprel 5558 df-po 5566 df-so 5567 df-fr 5611 df-se 5612 df-we 5613 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-pred 6295 df-ord 6360 df-on 6361 df-suc 6363 df-iota 6489 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7367 df-ov 7413 df-oprab 7414 df-mpo 7415 df-1st 7993 df-2nd 7994 df-frecs 8285 df-wrecs 8316 df-recs 8390 df-1o 8485 df-2o 8486 df-nadd 8683 df-no 27611 df-slt 27612 df-bday 27613 df-sle 27714 df-sslt 27750 df-scut 27752 df-0s 27793 df-made 27812 df-old 27813 df-left 27815 df-right 27816 df-norec 27902 df-norec2 27913 df-adds 27924 df-negs 27984 df-subs 27985 |
| This theorem is referenced by: sltsubsub3bd 28046 slesubsub2bd 28048 mulsproplem5 28080 mulsproplem7 28082 mulsproplem8 28083 mulsproplem12 28087 ssltmul1 28107 ssltmul2 28108 |
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