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| Mirrors > Home > MPE Home > Th. List > divscan2wd | Structured version Visualization version GIF version | ||
| Description: A weak cancellation law for surreal division. (Contributed by Scott Fenton, 13-Mar-2025.) |
| Ref | Expression |
|---|---|
| divscan2wd.1 | ⊢ (𝜑 → 𝐴 ∈ No ) |
| divscan2wd.2 | ⊢ (𝜑 → 𝐵 ∈ No ) |
| divscan2wd.3 | ⊢ (𝜑 → 𝐵 ≠ 0s ) |
| divscan2wd.4 | ⊢ (𝜑 → ∃𝑥 ∈ No (𝐵 ·s 𝑥) = 1s ) |
| Ref | Expression |
|---|---|
| divscan2wd | ⊢ (𝜑 → (𝐵 ·s (𝐴 /su 𝐵)) = 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2739 | . 2 ⊢ (𝐴 /su 𝐵) = (𝐴 /su 𝐵) | |
| 2 | divscan2wd.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ No ) | |
| 3 | divscan2wd.2 | . . . 4 ⊢ (𝜑 → 𝐵 ∈ No ) | |
| 4 | divscan2wd.3 | . . . 4 ⊢ (𝜑 → 𝐵 ≠ 0s ) | |
| 5 | divscan2wd.4 | . . . 4 ⊢ (𝜑 → ∃𝑥 ∈ No (𝐵 ·s 𝑥) = 1s ) | |
| 6 | 2, 3, 4, 5 | divsclwd 28206 | . . 3 ⊢ (𝜑 → (𝐴 /su 𝐵) ∈ No ) |
| 7 | 2, 6, 3, 4, 5 | divmulswd 28204 | . 2 ⊢ (𝜑 → ((𝐴 /su 𝐵) = (𝐴 /su 𝐵) ↔ (𝐵 ·s (𝐴 /su 𝐵)) = 𝐴)) |
| 8 | 1, 7 | mpbii 234 | 1 ⊢ (𝜑 → (𝐵 ·s (𝐴 /su 𝐵)) = 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1547 ∈ wcel 2119 ≠ wne 2934 ∃wrex 3063 (class class class)co 7356 No csur 27621 0s c0s 27815 1s c1s 27816 ·s cmuls 28116 /su cdivs 28197 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-rep 5199 ax-sep 5218 ax-nul 5228 ax-pow 5294 ax-pr 5362 ax-un 7678 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-ral 3054 df-rex 3064 df-rmo 3344 df-reu 3345 df-rab 3392 df-v 3433 df-sbc 3724 df-csb 3832 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3903 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-tp 4560 df-op 4562 df-ot 4564 df-uni 4839 df-int 4878 df-iun 4923 df-br 5073 df-opab 5135 df-mpt 5154 df-tr 5180 df-id 5513 df-eprel 5518 df-po 5526 df-so 5527 df-fr 5571 df-se 5572 df-we 5573 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 df-pred 6252 df-ord 6313 df-on 6314 df-suc 6316 df-iota 6441 df-fun 6487 df-fn 6488 df-f 6489 df-f1 6490 df-fo 6491 df-f1o 6492 df-fv 6493 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 27624 df-lts 27625 df-bday 27626 df-les 27727 df-slts 27768 df-cuts 27770 df-0s 27817 df-1s 27818 df-made 27837 df-old 27838 df-left 27840 df-right 27841 df-norec 27948 df-norec2 27959 df-adds 27970 df-negs 28031 df-subs 28032 df-muls 28117 df-divs 28198 |
| This theorem is referenced by: divscan1wd 28208 ltdivmulswd 28209 divsasswd 28213 divscan2d 28235 pw2divscan2d 28452 |
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