Theorem ssc1 16304

Description: Infer subset relation on objects from the subcategory subset relation. (Contributed by Mario Carneiro, 6-Jan-2017.)

Hypotheses

Ref	Expression
isssc.1	⊢ (𝜑 → 𝐻 Fn (𝑆 × 𝑆))
isssc.2	⊢ (𝜑 → 𝐽 Fn (𝑇 × 𝑇))
ssc1.3	⊢ (𝜑 → 𝐻 ⊆cat 𝐽)

Assertion

Ref	Expression
ssc1	⊢ (𝜑 → 𝑆 ⊆ 𝑇)

Proof of Theorem ssc1

Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		ssc1.3	. . 3 ⊢ (𝜑 → 𝐻 ⊆cat 𝐽)
2		isssc.1	. . . 4 ⊢ (𝜑 → 𝐻 Fn (𝑆 × 𝑆))
3		isssc.2	. . . 4 ⊢ (𝜑 → 𝐽 Fn (𝑇 × 𝑇))
4		sscrel 16296	. . . . . . 7 ⊢ Rel ⊆cat
5	4	brrelex2i 5083	. . . . . 6 ⊢ (𝐻 ⊆cat 𝐽 → 𝐽 ∈ V)
6	1, 5	syl 17	. . . . 5 ⊢ (𝜑 → 𝐽 ∈ V)
7	3	ssclem 16302	. . . . 5 ⊢ (𝜑 → (𝐽 ∈ V ↔ 𝑇 ∈ V))
8	6, 7	mpbid 221	. . . 4 ⊢ (𝜑 → 𝑇 ∈ V)
9	2, 3, 8	isssc 16303	. . 3 ⊢ (𝜑 → (𝐻 ⊆cat 𝐽 ↔ (𝑆 ⊆ 𝑇 ∧ ∀𝑥 ∈ 𝑆 ∀𝑦 ∈ 𝑆 (𝑥𝐻𝑦) ⊆ (𝑥𝐽𝑦))))
10	1, 9	mpbid 221	. 2 ⊢ (𝜑 → (𝑆 ⊆ 𝑇 ∧ ∀𝑥 ∈ 𝑆 ∀𝑦 ∈ 𝑆 (𝑥𝐻𝑦) ⊆ (𝑥𝐽𝑦)))
11	10	simpld 474	1 ⊢ (𝜑 → 𝑆 ⊆ 𝑇)

Syntax hints:   → wi 4   ∧ wa 383   ∈ wcel 1977  ∀wral 2896  Vcvv 3173   ⊆ wss 3540   class class class wbr 4583   × cxp 5036   Fn wfn 5799  (class class class)co 6549   ⊆_cat cssc 16290

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-rep 4699  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847

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-reu 2903  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  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-iun 4457  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-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-ov 6552  df-ixp 7795  df-ssc 16293

This theorem is referenced by:  ssctr  16308  ssceq  16309  subcss1  16325  issubc3  16332  subsubc  16336