| Mathbox for Rohan Ridenour |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > rr-phpd | Structured version Visualization version GIF version | ||
| Description: Equivalent of php 9236 without negation. (Contributed by Rohan Ridenour, 3-Aug-2023.) |
| Ref | Expression |
|---|---|
| rr-phpd.1 | ⊢ (𝜑 → 𝐴 ∈ ω) |
| rr-phpd.2 | ⊢ (𝜑 → 𝐵 ⊆ 𝐴) |
| rr-phpd.3 | ⊢ (𝜑 → 𝐴 ≈ 𝐵) |
| Ref | Expression |
|---|---|
| rr-phpd | ⊢ (𝜑 → 𝐴 = 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rr-phpd.3 | . 2 ⊢ (𝜑 → 𝐴 ≈ 𝐵) | |
| 2 | rr-phpd.1 | . . . 4 ⊢ (𝜑 → 𝐴 ∈ ω) | |
| 3 | rr-phpd.2 | . . . . . 6 ⊢ (𝜑 → 𝐵 ⊆ 𝐴) | |
| 4 | 3 | adantr 486 | . . . . 5 ⊢ ((𝜑 ∧ ¬ 𝐴 = 𝐵) → 𝐵 ⊆ 𝐴) |
| 5 | simpr 490 | . . . . . 6 ⊢ ((𝜑 ∧ ¬ 𝐴 = 𝐵) → ¬ 𝐴 = 𝐵) | |
| 6 | 5 | neqcomd 2773 | . . . . 5 ⊢ ((𝜑 ∧ ¬ 𝐴 = 𝐵) → ¬ 𝐵 = 𝐴) |
| 7 | dfpss2 4018 | . . . . 5 ⊢ (𝐵 ⊊ 𝐴 ↔ (𝐵 ⊆ 𝐴 ∧ ¬ 𝐵 = 𝐴)) | |
| 8 | 4, 6, 7 | sylanbrc 595 | . . . 4 ⊢ ((𝜑 ∧ ¬ 𝐴 = 𝐵) → 𝐵 ⊊ 𝐴) |
| 9 | php 9236 | . . . 4 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ⊊ 𝐴) → ¬ 𝐴 ≈ 𝐵) | |
| 10 | 2, 8, 9 | syl2an2r 698 | . . 3 ⊢ ((𝜑 ∧ ¬ 𝐴 = 𝐵) → ¬ 𝐴 ≈ 𝐵) |
| 11 | 10 | ex 418 | . 2 ⊢ (𝜑 → (¬ 𝐴 = 𝐵 → ¬ 𝐴 ≈ 𝐵)) |
| 12 | 1, 11 | mt4d 118 | 1 ⊢ (𝜑 → 𝐴 = 𝐵) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ∧ wa 401 = wceq 1569 ∈ wcel 2146 ⊆ wss 3900 ⊊ wpss 4016 class class class wbr 5106 ωcom 7887 ≈ cen 8984 |
| 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 1944 ax-6 2001 ax-7 2042 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2196 ax-12 2215 ax-ext 2735 ax-sep 5252 ax-nul 5263 ax-pr 5395 ax-un 7761 |
| 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 2101 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-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-op 4839 df-uni 4871 df-br 5107 df-opab 5171 df-mpt 5190 df-tr 5216 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-ord 6372 df-on 6373 df-lim 6374 df-suc 6375 df-iota 6501 df-fun 6549 df-fn 6550 df-f 6551 df-f1 6552 df-fo 6553 df-f1o 6554 df-fv 6555 df-om 7888 df-1o 8490 df-en 8988 df-dom 8989 df-fin 8991 |
| This theorem is used by: (None) |
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