Theorem mrcflem 16089

Description: The domain and range of the function expression for Moore closures. (Contributed by Stefan O'Rear, 31-Jan-2015.)

Assertion

Ref	Expression
mrcflem	⊢ (𝐶 ∈ (Moore‘𝑋) → (𝑥 ∈ 𝒫 𝑋 ↦ ∩ {𝑠 ∈ 𝐶 ∣ 𝑥 ⊆ 𝑠}):𝒫 𝑋⟶𝐶)

Distinct variable groups:   𝑥,𝑠,𝐶   𝑥,𝑋,𝑠

Proof of Theorem mrcflem

Step	Hyp	Ref	Expression
1		simpl 472	. . 3 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑥 ∈ 𝒫 𝑋) → 𝐶 ∈ (Moore‘𝑋))
2		ssrab2 3650	. . . 4 ⊢ {𝑠 ∈ 𝐶 ∣ 𝑥 ⊆ 𝑠} ⊆ 𝐶
3	2	a1i 11	. . 3 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑥 ∈ 𝒫 𝑋) → {𝑠 ∈ 𝐶 ∣ 𝑥 ⊆ 𝑠} ⊆ 𝐶)
4		mre1cl 16077	. . . . . 6 ⊢ (𝐶 ∈ (Moore‘𝑋) → 𝑋 ∈ 𝐶)
5	4	adantr 480	. . . . 5 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑥 ∈ 𝒫 𝑋) → 𝑋 ∈ 𝐶)
6		elpwi 4117	. . . . . 6 ⊢ (𝑥 ∈ 𝒫 𝑋 → 𝑥 ⊆ 𝑋)
7	6	adantl 481	. . . . 5 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑥 ∈ 𝒫 𝑋) → 𝑥 ⊆ 𝑋)
8		sseq2 3590	. . . . . 6 ⊢ (𝑠 = 𝑋 → (𝑥 ⊆ 𝑠 ↔ 𝑥 ⊆ 𝑋))
9	8	elrab 3331	. . . . 5 ⊢ (𝑋 ∈ {𝑠 ∈ 𝐶 ∣ 𝑥 ⊆ 𝑠} ↔ (𝑋 ∈ 𝐶 ∧ 𝑥 ⊆ 𝑋))
10	5, 7, 9	sylanbrc 695	. . . 4 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑥 ∈ 𝒫 𝑋) → 𝑋 ∈ {𝑠 ∈ 𝐶 ∣ 𝑥 ⊆ 𝑠})
11		ne0i 3880	. . . 4 ⊢ (𝑋 ∈ {𝑠 ∈ 𝐶 ∣ 𝑥 ⊆ 𝑠} → {𝑠 ∈ 𝐶 ∣ 𝑥 ⊆ 𝑠} ≠ ∅)
12	10, 11	syl 17	. . 3 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑥 ∈ 𝒫 𝑋) → {𝑠 ∈ 𝐶 ∣ 𝑥 ⊆ 𝑠} ≠ ∅)
13		mreintcl 16078	. . 3 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ {𝑠 ∈ 𝐶 ∣ 𝑥 ⊆ 𝑠} ⊆ 𝐶 ∧ {𝑠 ∈ 𝐶 ∣ 𝑥 ⊆ 𝑠} ≠ ∅) → ∩ {𝑠 ∈ 𝐶 ∣ 𝑥 ⊆ 𝑠} ∈ 𝐶)
14	1, 3, 12, 13	syl3anc 1318	. 2 ⊢ ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑥 ∈ 𝒫 𝑋) → ∩ {𝑠 ∈ 𝐶 ∣ 𝑥 ⊆ 𝑠} ∈ 𝐶)
15		eqid 2610	. 2 ⊢ (𝑥 ∈ 𝒫 𝑋 ↦ ∩ {𝑠 ∈ 𝐶 ∣ 𝑥 ⊆ 𝑠}) = (𝑥 ∈ 𝒫 𝑋 ↦ ∩ {𝑠 ∈ 𝐶 ∣ 𝑥 ⊆ 𝑠})
16	14, 15	fmptd 6292	1 ⊢ (𝐶 ∈ (Moore‘𝑋) → (𝑥 ∈ 𝒫 𝑋 ↦ ∩ {𝑠 ∈ 𝐶 ∣ 𝑥 ⊆ 𝑠}):𝒫 𝑋⟶𝐶)

Syntax hints:   → wi 4   ∧ wa 383   ∈ wcel 1977   ≠ wne 2780  {crab 2900   ⊆ wss 3540  ∅c0 3874  𝒫 cpw 4108  ∩ cint 4410   ↦ cmpt 4643  ⟶wf 5800  ‘cfv 5804  Moorecmre 16065

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-ral 2901  df-rex 2902  df-rab 2905  df-v 3175  df-sbc 3403  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-op 4132  df-uni 4373  df-int 4411  df-br 4584  df-opab 4644  df-mpt 4645  df-id 4953  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-fv 5812  df-mre 16069

This theorem is referenced by:  fnmrc  16090  mrcfval  16091  mrcf  16092