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| Mirrors > Home > MPE Home > Th. List > divdivs1d | Structured version Visualization version GIF version | ||
| Description: Surreal division into a fraction. (Contributed by Scott Fenton, 7-Aug-2025.) |
| Ref | Expression |
|---|---|
| divdivs1d.1 | ⊢ (𝜑 → 𝐴 ∈ No ) |
| divdivs1d.2 | ⊢ (𝜑 → 𝐵 ∈ No ) |
| divdivs1d.3 | ⊢ (𝜑 → 𝐶 ∈ No ) |
| divdivs1d.4 | ⊢ (𝜑 → 𝐵 ≠ 0s ) |
| divdivs1d.5 | ⊢ (𝜑 → 𝐶 ≠ 0s ) |
| Ref | Expression |
|---|---|
| divdivs1d | ⊢ (𝜑 → ((𝐴 /su 𝐵) /su 𝐶) = (𝐴 /su (𝐵 ·s 𝐶))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | divdivs1d.2 | . . . . . 6 ⊢ (𝜑 → 𝐵 ∈ No ) | |
| 2 | divdivs1d.3 | . . . . . 6 ⊢ (𝜑 → 𝐶 ∈ No ) | |
| 3 | divdivs1d.1 | . . . . . . 7 ⊢ (𝜑 → 𝐴 ∈ No ) | |
| 4 | 1, 2 | mulscld 28115 | . . . . . . 7 ⊢ (𝜑 → (𝐵 ·s 𝐶) ∈ No ) |
| 5 | divdivs1d.4 | . . . . . . . 8 ⊢ (𝜑 → 𝐵 ≠ 0s ) | |
| 6 | divdivs1d.5 | . . . . . . . 8 ⊢ (𝜑 → 𝐶 ≠ 0s ) | |
| 7 | 1, 2 | mulsne0bd 28166 | . . . . . . . 8 ⊢ (𝜑 → ((𝐵 ·s 𝐶) ≠ 0s ↔ (𝐵 ≠ 0s ∧ 𝐶 ≠ 0s ))) |
| 8 | 5, 6, 7 | mpbir2and 714 | . . . . . . 7 ⊢ (𝜑 → (𝐵 ·s 𝐶) ≠ 0s ) |
| 9 | 3, 4, 8 | divscld 28204 | . . . . . 6 ⊢ (𝜑 → (𝐴 /su (𝐵 ·s 𝐶)) ∈ No ) |
| 10 | 1, 2, 9 | mulsassd 28147 | . . . . 5 ⊢ (𝜑 → ((𝐵 ·s 𝐶) ·s (𝐴 /su (𝐵 ·s 𝐶))) = (𝐵 ·s (𝐶 ·s (𝐴 /su (𝐵 ·s 𝐶))))) |
| 11 | 3, 4, 8 | divscan2d 28205 | . . . . 5 ⊢ (𝜑 → ((𝐵 ·s 𝐶) ·s (𝐴 /su (𝐵 ·s 𝐶))) = 𝐴) |
| 12 | 10, 11 | eqtr3d 2772 | . . . 4 ⊢ (𝜑 → (𝐵 ·s (𝐶 ·s (𝐴 /su (𝐵 ·s 𝐶)))) = 𝐴) |
| 13 | 2, 9 | mulscld 28115 | . . . . 5 ⊢ (𝜑 → (𝐶 ·s (𝐴 /su (𝐵 ·s 𝐶))) ∈ No ) |
| 14 | 3, 13, 1, 5 | divmulsd 28202 | . . . 4 ⊢ (𝜑 → ((𝐴 /su 𝐵) = (𝐶 ·s (𝐴 /su (𝐵 ·s 𝐶))) ↔ (𝐵 ·s (𝐶 ·s (𝐴 /su (𝐵 ·s 𝐶)))) = 𝐴)) |
| 15 | 12, 14 | mpbird 257 | . . 3 ⊢ (𝜑 → (𝐴 /su 𝐵) = (𝐶 ·s (𝐴 /su (𝐵 ·s 𝐶)))) |
| 16 | 15 | eqcomd 2741 | . 2 ⊢ (𝜑 → (𝐶 ·s (𝐴 /su (𝐵 ·s 𝐶))) = (𝐴 /su 𝐵)) |
| 17 | 3, 1, 5 | divscld 28204 | . . 3 ⊢ (𝜑 → (𝐴 /su 𝐵) ∈ No ) |
| 18 | 17, 9, 2, 6 | divmulsd 28202 | . 2 ⊢ (𝜑 → (((𝐴 /su 𝐵) /su 𝐶) = (𝐴 /su (𝐵 ·s 𝐶)) ↔ (𝐶 ·s (𝐴 /su (𝐵 ·s 𝐶))) = (𝐴 /su 𝐵))) |
| 19 | 16, 18 | mpbird 257 | 1 ⊢ (𝜑 → ((𝐴 /su 𝐵) /su 𝐶) = (𝐴 /su (𝐵 ·s 𝐶))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 ≠ wne 2930 (class class class)co 7356 No csur 27591 0s c0s 27785 ·s cmuls 28086 /su cdivs 28167 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2184 ax-ext 2707 ax-rep 5201 ax-sep 5220 ax-nul 5230 ax-pow 5296 ax-pr 5364 ax-un 7678 ax-dc 10357 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2538 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2810 df-nfc 2884 df-ne 2931 df-ral 3050 df-rex 3060 df-rmo 3340 df-reu 3341 df-rab 3388 df-v 3429 df-sbc 3726 df-csb 3834 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-pss 3905 df-nul 4264 df-if 4457 df-pw 4533 df-sn 4558 df-pr 4560 df-tp 4562 df-op 4564 df-ot 4566 df-uni 4841 df-int 4880 df-iun 4925 df-br 5075 df-opab 5137 df-mpt 5156 df-tr 5182 df-id 5515 df-eprel 5520 df-po 5528 df-so 5529 df-fr 5573 df-se 5574 df-we 5575 df-xp 5626 df-rel 5627 df-cnv 5628 df-co 5629 df-dm 5630 df-rn 5631 df-res 5632 df-ima 5633 df-pred 6254 df-ord 6315 df-on 6316 df-lim 6317 df-suc 6318 df-iota 6443 df-fun 6489 df-fn 6490 df-f 6491 df-f1 6492 df-fo 6493 df-f1o 6494 df-fv 6495 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-om 7807 df-1st 7931 df-2nd 7932 df-frecs 8220 df-wrecs 8251 df-recs 8300 df-rdg 8338 df-1o 8394 df-2o 8395 df-oadd 8398 df-nadd 8591 df-no 27594 df-lts 27595 df-bday 27596 df-les 27697 df-slts 27738 df-cuts 27740 df-0s 27787 df-1s 27788 df-made 27807 df-old 27808 df-left 27810 df-right 27811 df-norec 27918 df-norec2 27929 df-adds 27940 df-negs 28001 df-subs 28002 df-muls 28087 df-divs 28168 |
| This theorem is referenced by: pw2cut 28440 |
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