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| Mirrors > Home > MPE Home > Th. List > funcsetcestrclem4 | Structured version Visualization version GIF version | ||
| Description: Lemma 4 for funcsetcestrc 18132. (Contributed by AV, 27-Mar-2020.) |
| Ref | Expression |
|---|---|
| funcsetcestrc.s | ⊢ 𝑆 = (SetCat‘𝑈) |
| funcsetcestrc.c | ⊢ 𝐶 = (Base‘𝑆) |
| funcsetcestrc.f | ⊢ (𝜑 → 𝐹 = (𝑥 ∈ 𝐶 ↦ {〈(Base‘ndx), 𝑥〉})) |
| funcsetcestrc.u | ⊢ (𝜑 → 𝑈 ∈ WUni) |
| funcsetcestrc.o | ⊢ (𝜑 → ω ∈ 𝑈) |
| funcsetcestrc.g | ⊢ (𝜑 → 𝐺 = (𝑥 ∈ 𝐶, 𝑦 ∈ 𝐶 ↦ ( I ↾ (𝑦 ↑m 𝑥)))) |
| Ref | Expression |
|---|---|
| funcsetcestrclem4 | ⊢ (𝜑 → 𝐺 Fn (𝐶 × 𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2730 | . . 3 ⊢ (𝑥 ∈ 𝐶, 𝑦 ∈ 𝐶 ↦ ( I ↾ (𝑦 ↑m 𝑥))) = (𝑥 ∈ 𝐶, 𝑦 ∈ 𝐶 ↦ ( I ↾ (𝑦 ↑m 𝑥))) | |
| 2 | ovex 7423 | . . . 4 ⊢ (𝑦 ↑m 𝑥) ∈ V | |
| 3 | resiexg 7891 | . . . 4 ⊢ ((𝑦 ↑m 𝑥) ∈ V → ( I ↾ (𝑦 ↑m 𝑥)) ∈ V) | |
| 4 | 2, 3 | ax-mp 5 | . . 3 ⊢ ( I ↾ (𝑦 ↑m 𝑥)) ∈ V |
| 5 | 1, 4 | fnmpoi 8052 | . 2 ⊢ (𝑥 ∈ 𝐶, 𝑦 ∈ 𝐶 ↦ ( I ↾ (𝑦 ↑m 𝑥))) Fn (𝐶 × 𝐶) |
| 6 | funcsetcestrc.g | . . 3 ⊢ (𝜑 → 𝐺 = (𝑥 ∈ 𝐶, 𝑦 ∈ 𝐶 ↦ ( I ↾ (𝑦 ↑m 𝑥)))) | |
| 7 | 6 | fneq1d 6614 | . 2 ⊢ (𝜑 → (𝐺 Fn (𝐶 × 𝐶) ↔ (𝑥 ∈ 𝐶, 𝑦 ∈ 𝐶 ↦ ( I ↾ (𝑦 ↑m 𝑥))) Fn (𝐶 × 𝐶))) |
| 8 | 5, 7 | mpbiri 258 | 1 ⊢ (𝜑 → 𝐺 Fn (𝐶 × 𝐶)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1540 ∈ wcel 2109 Vcvv 3450 {csn 4592 〈cop 4598 ↦ cmpt 5191 I cid 5535 × cxp 5639 ↾ cres 5643 Fn wfn 6509 ‘cfv 6514 (class class class)co 7390 ∈ cmpo 7392 ωcom 7845 ↑m cmap 8802 WUnicwun 10660 ndxcnx 17170 Basecbs 17186 SetCatcsetc 18044 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-sep 5254 ax-nul 5264 ax-pow 5323 ax-pr 5390 ax-un 7714 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-ral 3046 df-rex 3055 df-rab 3409 df-v 3452 df-sbc 3757 df-csb 3866 df-dif 3920 df-un 3922 df-in 3924 df-ss 3934 df-nul 4300 df-if 4492 df-pw 4568 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4875 df-iun 4960 df-br 5111 df-opab 5173 df-mpt 5192 df-id 5536 df-xp 5647 df-rel 5648 df-cnv 5649 df-co 5650 df-dm 5651 df-rn 5652 df-res 5653 df-ima 5654 df-iota 6467 df-fun 6516 df-fn 6517 df-f 6518 df-fv 6522 df-ov 7393 df-oprab 7394 df-mpo 7395 df-1st 7971 df-2nd 7972 |
| This theorem is referenced by: funcsetcestrc 18132 |
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