| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > subsubs2d | Structured version Visualization version GIF version | ||
| Description: Law for double surreal subtraction. (Contributed by Scott Fenton, 16-Apr-2025.) |
| Ref | Expression |
|---|---|
| subsubs4d.1 | ⊢ (𝜑 → 𝐴 ∈ No) |
| subsubs4d.2 | ⊢ (𝜑 → 𝐵 ∈ No) |
| subsubs4d.3 | ⊢ (𝜑 → 𝐶 ∈ No) |
| Ref | Expression |
|---|---|
| subsubs2d | ⊢ (𝜑 → (𝐴 −s (𝐵 −s 𝐶)) = (𝐴 +s (𝐶 −s 𝐵))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | subsubs4d.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ No) | |
| 2 | subsubs4d.2 | . . . 4 ⊢ (𝜑 → 𝐵 ∈ No) | |
| 3 | subsubs4d.3 | . . . 4 ⊢ (𝜑 → 𝐶 ∈ No) | |
| 4 | 2, 3 | subscld 28506 | . . 3 ⊢ (𝜑 → (𝐵 −s 𝐶) ∈ No) |
| 5 | 1, 4 | subsvald 28504 | . 2 ⊢ (𝜑 → (𝐴 −s (𝐵 −s 𝐶)) = (𝐴 +s ( -s‘(𝐵 −s 𝐶)))) |
| 6 | 2, 3 | negsubsdi2d 28523 | . . 3 ⊢ (𝜑 → ( -s‘(𝐵 −s 𝐶)) = (𝐶 −s 𝐵)) |
| 7 | 6 | oveq2d 7467 | . 2 ⊢ (𝜑 → (𝐴 +s ( -s‘(𝐵 −s 𝐶))) = (𝐴 +s (𝐶 −s 𝐵))) |
| 8 | 5, 7 | eqtrd 2798 | 1 ⊢ (𝜑 → (𝐴 −s (𝐵 −s 𝐶)) = (𝐴 +s (𝐶 −s 𝐵))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2147 ‘cfv 6566 (class class class)co 7451 Nocsur 28054 +s cadds 28402 -scnegs 28462 −s csubs 28463 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5238 ax-sep 5255 ax-nul 5266 ax-pow 5334 ax-pr 5398 ax-un 7783 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-tp 4593 df-op 4841 df-ot 4864 df-uni 4873 df-int 4913 df-iun 4958 df-br 5109 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5553 df-eprel 5558 df-po 5566 df-so 5567 df-fr 5611 df-se 5612 df-we 5613 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 df-pred 6330 df-ord 6391 df-on 6392 df-suc 6394 df-iota 6520 df-fun 6568 df-fn 6569 df-f 6570 df-f1 6571 df-fo 6572 df-f1o 6573 df-fv 6574 df-riota 7408 df-ov 7454 df-oprab 7455 df-mpo 7456 df-1st 8035 df-2nd 8036 df-frecs 8337 df-wrecs 8368 df-recs 8417 df-1o 8514 df-2o 8515 df-nadd 8713 df-no 28057 df-lts 28058 df-bday 28059 df-les 28159 df-slts 28201 df-cuts 28203 df-0s 28250 df-made 28270 df-old 28271 df-left 28273 df-right 28274 df-norec 28381 df-norec2 28392 df-adds 28403 df-negs 28464 df-subs 28465 |
| This theorem is used by: nncansd 28540 mulsunif2lem 28612 n0subs 28806 zmulscld 28840 |
| Copyright terms: Public domain | W3C validator |