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| Mirrors > Home > MPE Home > Th. List > divscl | Structured version Visualization version GIF version | ||
| Description: Surreal division closure law. (Contributed by Scott Fenton, 16-Mar-2025.) |
| Ref | Expression |
|---|---|
| divscl | ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ∧ 𝐵 ≠ 0s ) → (𝐴 /su 𝐵) ∈ No) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | recsex 28612 | . . 3 ⊢ ((𝐵 ∈ No ∧ 𝐵 ≠ 0s ) → ∃𝑥 ∈ No (𝐵 ·s 𝑥) = 1s ) | |
| 2 | 1 | 3adant1 1148 | . 2 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ∧ 𝐵 ≠ 0s ) → ∃𝑥 ∈ No (𝐵 ·s 𝑥) = 1s ) |
| 3 | divsclw 28588 | . 2 ⊢ (((𝐴 ∈ No ∧ 𝐵 ∈ No ∧ 𝐵 ≠ 0s ) ∧ ∃𝑥 ∈ No (𝐵 ·s 𝑥) = 1s ) → (𝐴 /su 𝐵) ∈ No) | |
| 4 | 2, 3 | mpdan 700 | 1 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ∧ 𝐵 ≠ 0s ) → (𝐴 /su 𝐵) ∈ No) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ w3a 1103 = wceq 1569 ∈ wcel 2144 ≠ wne 2955 ∃wrex 3086 (class class class)co 7422 Nocsur 28004 0s c0s 28198 1s c1s 28199 ·s cmuls 28499 /su cdivs 28580 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7753 ax-dc 10529 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3848 df-ss 3897 df-pss 4013 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-tp 4589 df-op 4835 df-ot 4858 df-uni 4867 df-int 4907 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-se 5604 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6543 df-fn 6544 df-f 6545 df-f1 6546 df-fo 6547 df-f1o 6548 df-fv 6549 df-riota 7379 df-ov 7425 df-oprab 7426 df-mpo 7427 df-om 7880 df-1st 8003 df-2nd 8004 df-frecs 8304 df-wrecs 8335 df-recs 8384 df-rdg 8423 df-1o 8481 df-2o 8482 df-oadd 8485 df-nadd 8680 df-no 28007 df-lts 28008 df-bday 28009 df-les 28109 df-slts 28151 df-cuts 28153 df-0s 28200 df-1s 28201 df-made 28220 df-old 28221 df-left 28223 df-right 28224 df-norec 28331 df-norec2 28342 df-adds 28353 df-negs 28414 df-subs 28415 df-muls 28500 df-divs 28581 |
| This theorem is used by: divscld 28617 |
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