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| Mirrors > Home > MPE Home > Th. List > Mathboxes > fuco2eld | Structured version Visualization version GIF version | ||
| Description: Equivalence of product functor. (Contributed by Zhi Wang, 29-Sep-2025.) |
| Ref | Expression |
|---|---|
| fuco2eld.w | ⊢ (𝜑 → 𝑊 = (𝑆 × 𝑅)) |
| fuco2eld.u | ⊢ (𝜑 → 𝑈 = 〈〈𝐾, 𝐿〉, 〈𝐹, 𝐺〉〉) |
| fuco2eld.k | ⊢ (𝜑 → 𝐾𝑆𝐿) |
| fuco2eld.f | ⊢ (𝜑 → 𝐹𝑅𝐺) |
| Ref | Expression |
|---|---|
| fuco2eld | ⊢ (𝜑 → 𝑈 ∈ 𝑊) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fuco2eld.k | . . 3 ⊢ (𝜑 → 𝐾𝑆𝐿) | |
| 2 | fuco2eld.f | . . 3 ⊢ (𝜑 → 𝐹𝑅𝐺) | |
| 3 | fuco2el 50118 | . . 3 ⊢ (〈〈𝐾, 𝐿〉, 〈𝐹, 𝐺〉〉 ∈ (𝑆 × 𝑅) ↔ (𝐾𝑆𝐿 ∧ 𝐹𝑅𝐺)) | |
| 4 | 1, 2, 3 | sylanbrc 594 | . 2 ⊢ (𝜑 → 〈〈𝐾, 𝐿〉, 〈𝐹, 𝐺〉〉 ∈ (𝑆 × 𝑅)) |
| 5 | fuco2eld.u | . 2 ⊢ (𝜑 → 𝑈 = 〈〈𝐾, 𝐿〉, 〈𝐹, 𝐺〉〉) | |
| 6 | fuco2eld.w | . 2 ⊢ (𝜑 → 𝑊 = (𝑆 × 𝑅)) | |
| 7 | 4, 5, 6 | 3eltr4d 2878 | 1 ⊢ (𝜑 → 𝑈 ∈ 𝑊) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2143 〈cop 4595 class class class wbr 5109 × cxp 5659 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-ext 2735 ax-sep 5257 ax-pr 5404 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-sb 2097 df-clab 2742 df-cleq 2755 df-clel 2838 df-ral 3080 df-rex 3090 df-rab 3417 df-v 3457 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4488 df-sn 4590 df-pr 4592 df-op 4596 df-br 5110 df-opab 5174 df-xp 5667 |
| This theorem is used by: fuco11 50132 fuco11cl 50133 fuco21 50142 |
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