Theorem uhgrissubgr 29662

Description: The property of a hypergraph to be a subgraph. (Contributed by AV, 19-Nov-2020.)

Hypotheses

Ref	Expression
uhgrissubgr.v	⊢ 𝑉 = (Vtx‘𝑆)
uhgrissubgr.a	⊢ 𝐴 = (Vtx‘𝐺)
uhgrissubgr.i	⊢ 𝐼 = (iEdg‘𝑆)
uhgrissubgr.b	⊢ 𝐵 = (iEdg‘𝐺)

Assertion

Ref	Expression
uhgrissubgr	⊢ ((𝐺 ∈ 𝑊 ∧ Fun 𝐵 ∧ 𝑆 ∈ UHGraph) → (𝑆 SubGraph 𝐺 ↔ (𝑉 ⊆ 𝐴 ∧ 𝐼 ⊆ 𝐵)))

Proof of Theorem uhgrissubgr

Dummy variable 𝑒 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		uhgrissubgr.v	. . . 4 ⊢ 𝑉 = (Vtx‘𝑆)
2		uhgrissubgr.a	. . . 4 ⊢ 𝐴 = (Vtx‘𝐺)
3		uhgrissubgr.i	. . . 4 ⊢ 𝐼 = (iEdg‘𝑆)
4		uhgrissubgr.b	. . . 4 ⊢ 𝐵 = (iEdg‘𝐺)
5		eqid 2766	. . . 4 ⊢ (Edg‘𝑆) = (Edg‘𝑆)
6	1, 2, 3, 4, 5	subgrprop2 29661	. . 3 ⊢ (𝑆 SubGraph 𝐺 → (𝑉 ⊆ 𝐴 ∧ 𝐼 ⊆ 𝐵 ∧ (Edg‘𝑆) ⊆ 𝒫 𝑉))
7		3simpa 1166	. . 3 ⊢ ((𝑉 ⊆ 𝐴 ∧ 𝐼 ⊆ 𝐵 ∧ (Edg‘𝑆) ⊆ 𝒫 𝑉) → (𝑉 ⊆ 𝐴 ∧ 𝐼 ⊆ 𝐵))
8	6, 7	syl 18	. 2 ⊢ (𝑆 SubGraph 𝐺 → (𝑉 ⊆ 𝐴 ∧ 𝐼 ⊆ 𝐵))
9		simprl 783	. . . 4 ⊢ (((𝐺 ∈ 𝑊 ∧ Fun 𝐵 ∧ 𝑆 ∈ UHGraph) ∧ (𝑉 ⊆ 𝐴 ∧ 𝐼 ⊆ 𝐵)) → 𝑉 ⊆ 𝐴)
10		simp2 1155	. . . . . 6 ⊢ ((𝐺 ∈ 𝑊 ∧ Fun 𝐵 ∧ 𝑆 ∈ UHGraph) → Fun 𝐵)
11		simpr 490	. . . . . 6 ⊢ ((𝑉 ⊆ 𝐴 ∧ 𝐼 ⊆ 𝐵) → 𝐼 ⊆ 𝐵)
12		funssres 6587	. . . . . 6 ⊢ ((Fun 𝐵 ∧ 𝐼 ⊆ 𝐵) → (𝐵 ↾ dom 𝐼) = 𝐼)
13	10, 11, 12	syl2an 608	. . . . 5 ⊢ (((𝐺 ∈ 𝑊 ∧ Fun 𝐵 ∧ 𝑆 ∈ UHGraph) ∧ (𝑉 ⊆ 𝐴 ∧ 𝐼 ⊆ 𝐵)) → (𝐵 ↾ dom 𝐼) = 𝐼)
14	13	eqcomd 2772	. . . 4 ⊢ (((𝐺 ∈ 𝑊 ∧ Fun 𝐵 ∧ 𝑆 ∈ UHGraph) ∧ (𝑉 ⊆ 𝐴 ∧ 𝐼 ⊆ 𝐵)) → 𝐼 = (𝐵 ↾ dom 𝐼))
15		edguhgr 29516	. . . . . . . . 9 ⊢ ((𝑆 ∈ UHGraph ∧ 𝑒 ∈ (Edg‘𝑆)) → 𝑒 ∈ 𝒫 (Vtx‘𝑆))
16	15	ex 418	. . . . . . . 8 ⊢ (𝑆 ∈ UHGraph → (𝑒 ∈ (Edg‘𝑆) → 𝑒 ∈ 𝒫 (Vtx‘𝑆)))
17	1	pweqi 4583	. . . . . . . . 9 ⊢ 𝒫 𝑉 = 𝒫 (Vtx‘𝑆)
18	17	eleq2i 2858	. . . . . . . 8 ⊢ (𝑒 ∈ 𝒫 𝑉 ↔ 𝑒 ∈ 𝒫 (Vtx‘𝑆))
19	16, 18	imbitrrdi 255	. . . . . . 7 ⊢ (𝑆 ∈ UHGraph → (𝑒 ∈ (Edg‘𝑆) → 𝑒 ∈ 𝒫 𝑉))
20	19	ssrdv 3946	. . . . . 6 ⊢ (𝑆 ∈ UHGraph → (Edg‘𝑆) ⊆ 𝒫 𝑉)
21	20	3ad2ant3 1153	. . . . 5 ⊢ ((𝐺 ∈ 𝑊 ∧ Fun 𝐵 ∧ 𝑆 ∈ UHGraph) → (Edg‘𝑆) ⊆ 𝒫 𝑉)
22	21	adantr 486	. . . 4 ⊢ (((𝐺 ∈ 𝑊 ∧ Fun 𝐵 ∧ 𝑆 ∈ UHGraph) ∧ (𝑉 ⊆ 𝐴 ∧ 𝐼 ⊆ 𝐵)) → (Edg‘𝑆) ⊆ 𝒫 𝑉)
23	1, 2, 3, 4, 5	issubgr 29658	. . . . . 6 ⊢ ((𝐺 ∈ 𝑊 ∧ 𝑆 ∈ UHGraph) → (𝑆 SubGraph 𝐺 ↔ (𝑉 ⊆ 𝐴 ∧ 𝐼 = (𝐵 ↾ dom 𝐼) ∧ (Edg‘𝑆) ⊆ 𝒫 𝑉)))
24	23	3adant2 1149	. . . . 5 ⊢ ((𝐺 ∈ 𝑊 ∧ Fun 𝐵 ∧ 𝑆 ∈ UHGraph) → (𝑆 SubGraph 𝐺 ↔ (𝑉 ⊆ 𝐴 ∧ 𝐼 = (𝐵 ↾ dom 𝐼) ∧ (Edg‘𝑆) ⊆ 𝒫 𝑉)))
25	24	adantr 486	. . . 4 ⊢ (((𝐺 ∈ 𝑊 ∧ Fun 𝐵 ∧ 𝑆 ∈ UHGraph) ∧ (𝑉 ⊆ 𝐴 ∧ 𝐼 ⊆ 𝐵)) → (𝑆 SubGraph 𝐺 ↔ (𝑉 ⊆ 𝐴 ∧ 𝐼 = (𝐵 ↾ dom 𝐼) ∧ (Edg‘𝑆) ⊆ 𝒫 𝑉)))
26	9, 14, 22, 25	mpbir3and 1361	. . 3 ⊢ (((𝐺 ∈ 𝑊 ∧ Fun 𝐵 ∧ 𝑆 ∈ UHGraph) ∧ (𝑉 ⊆ 𝐴 ∧ 𝐼 ⊆ 𝐵)) → 𝑆 SubGraph 𝐺)
27	26	ex 418	. 2 ⊢ ((𝐺 ∈ 𝑊 ∧ Fun 𝐵 ∧ 𝑆 ∈ UHGraph) → ((𝑉 ⊆ 𝐴 ∧ 𝐼 ⊆ 𝐵) → 𝑆 SubGraph 𝐺))
28	8, 27	impbid2 229	1 ⊢ ((𝐺 ∈ 𝑊 ∧ Fun 𝐵 ∧ 𝑆 ∈ UHGraph) → (𝑆 SubGraph 𝐺 ↔ (𝑉 ⊆ 𝐴 ∧ 𝐼 ⊆ 𝐵)))

This proof depends on syntax axioms:   → wi 4   ↔ wb 209   ∧ wa 401   ∧ w3a 1103   = wceq 1570   ∈ wcel 2146   ⊆ wss 3908  𝒫 cpw 4567   class class class wbr 5114  dom cdm 5666   ↾ cres 5668  Fun wfun 6537  ‘cfv 6543  Vtxcvtx 29383  iEdgciedg 29384  Edgcedg 29434  UHGraphcuhgr 29443   SubGraph csubgr 29654

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2148  ax-9 2156  ax-10 2179  ax-11 2195  ax-12 2216  ax-ext 2738  ax-sep 5262  ax-nul 5274  ax-pr 5409  ax-un 7745

This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-mo 2570  df-eu 2600  df-clab 2745  df-cleq 2758  df-clel 2841  df-nfc 2915  df-ne 2962  df-ral 3083  df-rex 3093  df-rab 3420  df-v 3460  df-sbc 3748  df-dif 3911  df-un 3913  df-in 3915  df-ss 3925  df-nul 4290  df-if 4493  df-pw 4569  df-sn 4595  df-pr 4597  df-op 4601  df-uni 4878  df-br 5115  df-opab 5179  df-mpt 5198  df-id 5561  df-xp 5672  df-rel 5673  df-cnv 5674  df-co 5675  df-dm 5676  df-rn 5677  df-res 5678  df-iota 6499  df-fun 6545  df-fn 6546  df-f 6547  df-fv 6551  df-edg 29435  df-uhgr 29445  df-subgr 29655

This theorem is used by:  uhgrsubgrself  29667  isubgrsubgr  48675