| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > oaword | Structured version Visualization version GIF version | ||
| Description: Weak ordering property of ordinal addition. (Contributed by NM, 6-Dec-2004.) (Proof shortened by Andrew Salmon, 22-Oct-2011.) |
| Ref | Expression |
|---|---|
| oaword | ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐴 ⊆ 𝐵 ↔ (𝐶 +o 𝐴) ⊆ (𝐶 +o 𝐵))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | oaord 8530 | . . . 4 ⊢ ((𝐵 ∈ On ∧ 𝐴 ∈ On ∧ 𝐶 ∈ On) → (𝐵 ∈ 𝐴 ↔ (𝐶 +o 𝐵) ∈ (𝐶 +o 𝐴))) | |
| 2 | 1 | 3com12 1140 | . . 3 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐵 ∈ 𝐴 ↔ (𝐶 +o 𝐵) ∈ (𝐶 +o 𝐴))) |
| 3 | 2 | notbid 321 | . 2 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → (¬ 𝐵 ∈ 𝐴 ↔ ¬ (𝐶 +o 𝐵) ∈ (𝐶 +o 𝐴))) |
| 4 | ontri1 6395 | . . 3 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴 ⊆ 𝐵 ↔ ¬ 𝐵 ∈ 𝐴)) | |
| 5 | 4 | 3adant3 1149 | . 2 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐴 ⊆ 𝐵 ↔ ¬ 𝐵 ∈ 𝐴)) |
| 6 | oacl 8518 | . . . . 5 ⊢ ((𝐶 ∈ On ∧ 𝐴 ∈ On) → (𝐶 +o 𝐴) ∈ On) | |
| 7 | 6 | ancoms 463 | . . . 4 ⊢ ((𝐴 ∈ On ∧ 𝐶 ∈ On) → (𝐶 +o 𝐴) ∈ On) |
| 8 | 7 | 3adant2 1148 | . . 3 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐶 +o 𝐴) ∈ On) |
| 9 | oacl 8518 | . . . . 5 ⊢ ((𝐶 ∈ On ∧ 𝐵 ∈ On) → (𝐶 +o 𝐵) ∈ On) | |
| 10 | 9 | ancoms 463 | . . . 4 ⊢ ((𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐶 +o 𝐵) ∈ On) |
| 11 | 10 | 3adant1 1147 | . . 3 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐶 +o 𝐵) ∈ On) |
| 12 | ontri1 6395 | . . 3 ⊢ (((𝐶 +o 𝐴) ∈ On ∧ (𝐶 +o 𝐵) ∈ On) → ((𝐶 +o 𝐴) ⊆ (𝐶 +o 𝐵) ↔ ¬ (𝐶 +o 𝐵) ∈ (𝐶 +o 𝐴))) | |
| 13 | 8, 11, 12 | syl2anc 595 | . 2 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → ((𝐶 +o 𝐴) ⊆ (𝐶 +o 𝐵) ↔ ¬ (𝐶 +o 𝐵) ∈ (𝐶 +o 𝐴))) |
| 14 | 3, 5, 13 | 3bitr4d 314 | 1 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐴 ⊆ 𝐵 ↔ (𝐶 +o 𝐴) ⊆ (𝐶 +o 𝐵))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ↔ wb 209 ∧ w3a 1102 ∈ wcel 2142 ⊆ wss 3904 Oncon0 6360 (class class class)co 7412 +o coa 8448 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-rep 5237 ax-sep 5256 ax-nul 5268 ax-pr 5403 ax-un 7734 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1103 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-nf 1813 df-sb 2096 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3079 df-rex 3089 df-reu 3369 df-rab 3416 df-v 3456 df-sbc 3744 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-iun 4957 df-br 5109 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5555 df-eprel 5560 df-po 5568 df-so 5569 df-fr 5613 df-we 5615 df-xp 5666 df-rel 5667 df-cnv 5668 df-co 5669 df-dm 5670 df-rn 5671 df-res 5672 df-ima 5673 df-pred 6302 df-ord 6363 df-on 6364 df-lim 6365 df-suc 6366 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7861 df-2nd 7985 df-frecs 8276 df-wrecs 8307 df-recs 8356 df-rdg 8395 df-oadd 8455 |
| This theorem is used by: oaword1 8535 oaass 8544 omwordri 8555 omlimcl 8561 oaabs2 8633 oasubex 44041 oaabsb 44049 omabs2 44087 |
| Copyright terms: Public domain | W3C validator |