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| Mirrors > Home > MPE Home > Th. List > Mathboxes > dalemcceb | Structured version Visualization version GIF version | ||
| Description: Lemma for dath 40933. Frequently-used utility lemma. (Contributed by NM, 15-Aug-2012.) |
| Ref | Expression |
|---|---|
| da.ps0 | ⊢ (𝜓 ↔ ((𝑐 ∈ 𝐴 ∧ 𝑑 ∈ 𝐴) ∧ ¬ 𝑐 ≤ 𝑌 ∧ (𝑑 ≠ 𝑐 ∧ ¬ 𝑑 ≤ 𝑌 ∧ 𝐶 ≤ (𝑐 ∨ 𝑑)))) |
| da.a1 | ⊢ 𝐴 = (Atoms‘𝐾) |
| Ref | Expression |
|---|---|
| dalemcceb | ⊢ (𝜓 → 𝑐 ∈ (Base‘𝐾)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | da.ps0 | . . 3 ⊢ (𝜓 ↔ ((𝑐 ∈ 𝐴 ∧ 𝑑 ∈ 𝐴) ∧ ¬ 𝑐 ≤ 𝑌 ∧ (𝑑 ≠ 𝑐 ∧ ¬ 𝑑 ≤ 𝑌 ∧ 𝐶 ≤ (𝑐 ∨ 𝑑)))) | |
| 2 | 1 | dalemccea 40880 | . 2 ⊢ (𝜓 → 𝑐 ∈ 𝐴) |
| 3 | eqid 2763 | . . 3 ⊢ (Base‘𝐾) = (Base‘𝐾) | |
| 4 | da.a1 | . . 3 ⊢ 𝐴 = (Atoms‘𝐾) | |
| 5 | 3, 4 | atbase 40486 | . 2 ⊢ (𝑐 ∈ 𝐴 → 𝑐 ∈ (Base‘𝐾)) |
| 6 | 2, 5 | syl 18 | 1 ⊢ (𝜓 → 𝑐 ∈ (Base‘𝐾)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 401 ∧ w3a 1103 = wceq 1569 ∈ wcel 2146 ≠ wne 2958 class class class wbr 5105 ‘cfv 6546 (class class class)co 7427 Basecbs 17399 Atomscatm 40460 |
| 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 5251 ax-nul 5262 ax-pr 5394 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 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 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-rab 3416 df-v 3455 df-ss 3900 df-dif 4049 df-in 4093 df-un 4153 df-nul 4281 df-if 4485 df-pw 4561 df-sn 4588 df-pr 4590 df-op 4838 df-uni 4870 df-br 5106 df-opab 5170 df-mpt 5189 df-id 5549 df-xp 5660 df-rel 5661 df-cnv 5662 df-co 5663 df-dm 5664 df-iota 6500 df-fun 6548 df-fv 6554 df-ats 40464 |
| This theorem is used by: dalem21 40891 dalem25 40895 dalem38 40907 dalem39 40908 dalem44 40913 dalem45 40914 dalem48 40917 dalem52 40921 |
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