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Mirrors > Home > MPE Home > Th. List > posdifsd | Structured version Visualization version GIF version |
Description: Comparison of two surreals whose difference is positive. (Contributed by Scott Fenton, 10-Mar-2025.) |
Ref | Expression |
---|---|
posdifsd.1 | ⊢ (𝜑 → 𝐴 ∈ No ) |
posdifsd.2 | ⊢ (𝜑 → 𝐵 ∈ No ) |
Ref | Expression |
---|---|
posdifsd | ⊢ (𝜑 → (𝐴 <s 𝐵 ↔ 0s <s (𝐵 -s 𝐴))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0sno 27294 | . . . 4 ⊢ 0s ∈ No | |
2 | 1 | a1i 11 | . . 3 ⊢ (𝜑 → 0s ∈ No ) |
3 | posdifsd.2 | . . . 4 ⊢ (𝜑 → 𝐵 ∈ No ) | |
4 | posdifsd.1 | . . . 4 ⊢ (𝜑 → 𝐴 ∈ No ) | |
5 | 3, 4 | subscld 27502 | . . 3 ⊢ (𝜑 → (𝐵 -s 𝐴) ∈ No ) |
6 | 2, 5, 4 | sltadd1d 27448 | . 2 ⊢ (𝜑 → ( 0s <s (𝐵 -s 𝐴) ↔ ( 0s +s 𝐴) <s ((𝐵 -s 𝐴) +s 𝐴))) |
7 | addslid 27419 | . . . 4 ⊢ (𝐴 ∈ No → ( 0s +s 𝐴) = 𝐴) | |
8 | 4, 7 | syl 17 | . . 3 ⊢ (𝜑 → ( 0s +s 𝐴) = 𝐴) |
9 | npcans 27509 | . . . 4 ⊢ ((𝐵 ∈ No ∧ 𝐴 ∈ No ) → ((𝐵 -s 𝐴) +s 𝐴) = 𝐵) | |
10 | 3, 4, 9 | syl2anc 585 | . . 3 ⊢ (𝜑 → ((𝐵 -s 𝐴) +s 𝐴) = 𝐵) |
11 | 8, 10 | breq12d 5157 | . 2 ⊢ (𝜑 → (( 0s +s 𝐴) <s ((𝐵 -s 𝐴) +s 𝐴) ↔ 𝐴 <s 𝐵)) |
12 | 6, 11 | bitr2d 280 | 1 ⊢ (𝜑 → (𝐴 <s 𝐵 ↔ 0s <s (𝐵 -s 𝐴))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 = wceq 1542 ∈ wcel 2107 class class class wbr 5144 (class class class)co 7396 No csur 27110 <s cslt 27111 0s c0s 27290 +s cadds 27410 -s csubs 27462 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2704 ax-rep 5281 ax-sep 5295 ax-nul 5302 ax-pow 5359 ax-pr 5423 ax-un 7712 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2535 df-eu 2564 df-clab 2711 df-cleq 2725 df-clel 2811 df-nfc 2886 df-ne 2942 df-ral 3063 df-rex 3072 df-rmo 3377 df-reu 3378 df-rab 3434 df-v 3477 df-sbc 3776 df-csb 3892 df-dif 3949 df-un 3951 df-in 3953 df-ss 3963 df-pss 3965 df-nul 4321 df-if 4525 df-pw 4600 df-sn 4625 df-pr 4627 df-tp 4629 df-op 4631 df-ot 4633 df-uni 4905 df-int 4947 df-iun 4995 df-br 5145 df-opab 5207 df-mpt 5228 df-tr 5262 df-id 5570 df-eprel 5576 df-po 5584 df-so 5585 df-fr 5627 df-se 5628 df-we 5629 df-xp 5678 df-rel 5679 df-cnv 5680 df-co 5681 df-dm 5682 df-rn 5683 df-res 5684 df-ima 5685 df-pred 6292 df-ord 6359 df-on 6360 df-suc 6362 df-iota 6487 df-fun 6537 df-fn 6538 df-f 6539 df-f1 6540 df-fo 6541 df-f1o 6542 df-fv 6543 df-riota 7352 df-ov 7399 df-oprab 7400 df-mpo 7401 df-1st 7962 df-2nd 7963 df-frecs 8253 df-wrecs 8284 df-recs 8358 df-1o 8453 df-2o 8454 df-nadd 8653 df-no 27113 df-slt 27114 df-bday 27115 df-sle 27215 df-sslt 27250 df-scut 27252 df-0s 27292 df-made 27309 df-old 27310 df-left 27312 df-right 27313 df-norec 27389 df-norec2 27400 df-adds 27411 df-negs 27463 df-subs 27464 |
This theorem is referenced by: sltmul2 27590 precsexlem9 27628 |
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