ressprs - Mathbox for Thierry Arnoux

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Theorem ressprs 32638

Description: The restriction of a proset is a proset. (Contributed by Thierry Arnoux, 11-Sep-2015.)

**Hypothesis**
Ref	Expression
ressprs.b	⊢ 𝐵 = (Base‘𝐾)

**Assertion**
Ref	Expression
ressprs	⊢ ((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) → (𝐾 ↾_s 𝐴) ∈ Proset )

Proof of Theorem ressprs Dummy variables 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		ovexd 7440	. . 3 ⊢ ((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) → (𝐾 ↾_s 𝐴) ∈ V)
2		simp-4l 780	. . . . . . . 8 ⊢ (((((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐴) ∧ 𝑧 ∈ 𝐴) → 𝐾 ∈ Proset )
3		simp-4r 781	. . . . . . . . 9 ⊢ (((((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐴) ∧ 𝑧 ∈ 𝐴) → 𝐴 ⊆ 𝐵)
4		simpllr 773	. . . . . . . . 9 ⊢ (((((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐴) ∧ 𝑧 ∈ 𝐴) → 𝑥 ∈ 𝐴)
5	3, 4	sseldd 3978	. . . . . . . 8 ⊢ (((((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐴) ∧ 𝑧 ∈ 𝐴) → 𝑥 ∈ 𝐵)
6	2, 5	jca 511	. . . . . . 7 ⊢ (((((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐴) ∧ 𝑧 ∈ 𝐴) → (𝐾 ∈ Proset ∧ 𝑥 ∈ 𝐵))
7		simplr 766	. . . . . . . 8 ⊢ (((((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐴) ∧ 𝑧 ∈ 𝐴) → 𝑦 ∈ 𝐴)
8	3, 7	sseldd 3978	. . . . . . 7 ⊢ (((((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐴) ∧ 𝑧 ∈ 𝐴) → 𝑦 ∈ 𝐵)
9		simpr 484	. . . . . . . 8 ⊢ (((((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐴) ∧ 𝑧 ∈ 𝐴) → 𝑧 ∈ 𝐴)
10	3, 9	sseldd 3978	. . . . . . 7 ⊢ (((((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐴) ∧ 𝑧 ∈ 𝐴) → 𝑧 ∈ 𝐵)
11		ressprs.b	. . . . . . . . . . . 12 ⊢ 𝐵 = (Base‘𝐾)
12		eqid 2726	. . . . . . . . . . . 12 ⊢ (le‘𝐾) = (le‘𝐾)
13	11, 12	isprs 18262	. . . . . . . . . . 11 ⊢ (𝐾 ∈ Proset ↔ (𝐾 ∈ V ∧ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ∀𝑧 ∈ 𝐵 (𝑥(le‘𝐾)𝑥 ∧ ((𝑥(le‘𝐾)𝑦 ∧ 𝑦(le‘𝐾)𝑧) → 𝑥(le‘𝐾)𝑧))))
14	13	simprbi 496	. . . . . . . . . 10 ⊢ (𝐾 ∈ Proset → ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ∀𝑧 ∈ 𝐵 (𝑥(le‘𝐾)𝑥 ∧ ((𝑥(le‘𝐾)𝑦 ∧ 𝑦(le‘𝐾)𝑧) → 𝑥(le‘𝐾)𝑧)))
15	14	r19.21bi 3242	. . . . . . . . 9 ⊢ ((𝐾 ∈ Proset ∧ 𝑥 ∈ 𝐵) → ∀𝑦 ∈ 𝐵 ∀𝑧 ∈ 𝐵 (𝑥(le‘𝐾)𝑥 ∧ ((𝑥(le‘𝐾)𝑦 ∧ 𝑦(le‘𝐾)𝑧) → 𝑥(le‘𝐾)𝑧)))
16	15	r19.21bi 3242	. . . . . . . 8 ⊢ (((𝐾 ∈ Proset ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝐵) → ∀𝑧 ∈ 𝐵 (𝑥(le‘𝐾)𝑥 ∧ ((𝑥(le‘𝐾)𝑦 ∧ 𝑦(le‘𝐾)𝑧) → 𝑥(le‘𝐾)𝑧)))
17	16	r19.21bi 3242	. . . . . . 7 ⊢ ((((𝐾 ∈ Proset ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝐵) ∧ 𝑧 ∈ 𝐵) → (𝑥(le‘𝐾)𝑥 ∧ ((𝑥(le‘𝐾)𝑦 ∧ 𝑦(le‘𝐾)𝑧) → 𝑥(le‘𝐾)𝑧)))
18	6, 8, 10, 17	syl21anc 835	. . . . . 6 ⊢ (((((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐴) ∧ 𝑧 ∈ 𝐴) → (𝑥(le‘𝐾)𝑥 ∧ ((𝑥(le‘𝐾)𝑦 ∧ 𝑦(le‘𝐾)𝑧) → 𝑥(le‘𝐾)𝑧)))
19	18	ralrimiva 3140	. . . . 5 ⊢ ((((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐴) → ∀𝑧 ∈ 𝐴 (𝑥(le‘𝐾)𝑥 ∧ ((𝑥(le‘𝐾)𝑦 ∧ 𝑦(le‘𝐾)𝑧) → 𝑥(le‘𝐾)𝑧)))
20	19	ralrimiva 3140	. . . 4 ⊢ (((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐴) → ∀𝑦 ∈ 𝐴 ∀𝑧 ∈ 𝐴 (𝑥(le‘𝐾)𝑥 ∧ ((𝑥(le‘𝐾)𝑦 ∧ 𝑦(le‘𝐾)𝑧) → 𝑥(le‘𝐾)𝑧)))
21	20	ralrimiva 3140	. . 3 ⊢ ((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) → ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ∀𝑧 ∈ 𝐴 (𝑥(le‘𝐾)𝑥 ∧ ((𝑥(le‘𝐾)𝑦 ∧ 𝑦(le‘𝐾)𝑧) → 𝑥(le‘𝐾)𝑧)))
22		eqid 2726	. . . . . . 7 ⊢ (𝐾 ↾_s 𝐴) = (𝐾 ↾_s 𝐴)
23	22, 11	ressbas2 17191	. . . . . 6 ⊢ (𝐴 ⊆ 𝐵 → 𝐴 = (Base‘(𝐾 ↾_s 𝐴)))
24	23	adantl 481	. . . . 5 ⊢ ((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) → 𝐴 = (Base‘(𝐾 ↾_s 𝐴)))
25	11	fvexi 6899	. . . . . . . . . . . 12 ⊢ 𝐵 ∈ V
26	25	ssex 5314	. . . . . . . . . . 11 ⊢ (𝐴 ⊆ 𝐵 → 𝐴 ∈ V)
27	22, 12	ressle 17334	. . . . . . . . . . 11 ⊢ (𝐴 ∈ V → (le‘𝐾) = (le‘(𝐾 ↾_s 𝐴)))
28	26, 27	syl 17	. . . . . . . . . 10 ⊢ (𝐴 ⊆ 𝐵 → (le‘𝐾) = (le‘(𝐾 ↾_s 𝐴)))
29	28	adantl 481	. . . . . . . . 9 ⊢ ((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) → (le‘𝐾) = (le‘(𝐾 ↾_s 𝐴)))
30	29	breqd 5152	. . . . . . . 8 ⊢ ((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) → (𝑥(le‘𝐾)𝑥 ↔ 𝑥(le‘(𝐾 ↾_s 𝐴))𝑥))
31	29	breqd 5152	. . . . . . . . . 10 ⊢ ((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) → (𝑥(le‘𝐾)𝑦 ↔ 𝑥(le‘(𝐾 ↾_s 𝐴))𝑦))
32	29	breqd 5152	. . . . . . . . . 10 ⊢ ((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) → (𝑦(le‘𝐾)𝑧 ↔ 𝑦(le‘(𝐾 ↾_s 𝐴))𝑧))
33	31, 32	anbi12d 630	. . . . . . . . 9 ⊢ ((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) → ((𝑥(le‘𝐾)𝑦 ∧ 𝑦(le‘𝐾)𝑧) ↔ (𝑥(le‘(𝐾 ↾_s 𝐴))𝑦 ∧ 𝑦(le‘(𝐾 ↾_s 𝐴))𝑧)))
34	29	breqd 5152	. . . . . . . . 9 ⊢ ((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) → (𝑥(le‘𝐾)𝑧 ↔ 𝑥(le‘(𝐾 ↾_s 𝐴))𝑧))
35	33, 34	imbi12d 344	. . . . . . . 8 ⊢ ((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) → (((𝑥(le‘𝐾)𝑦 ∧ 𝑦(le‘𝐾)𝑧) → 𝑥(le‘𝐾)𝑧) ↔ ((𝑥(le‘(𝐾 ↾_s 𝐴))𝑦 ∧ 𝑦(le‘(𝐾 ↾_s 𝐴))𝑧) → 𝑥(le‘(𝐾 ↾_s 𝐴))𝑧)))
36	30, 35	anbi12d 630	. . . . . . 7 ⊢ ((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) → ((𝑥(le‘𝐾)𝑥 ∧ ((𝑥(le‘𝐾)𝑦 ∧ 𝑦(le‘𝐾)𝑧) → 𝑥(le‘𝐾)𝑧)) ↔ (𝑥(le‘(𝐾 ↾_s 𝐴))𝑥 ∧ ((𝑥(le‘(𝐾 ↾_s 𝐴))𝑦 ∧ 𝑦(le‘(𝐾 ↾_s 𝐴))𝑧) → 𝑥(le‘(𝐾 ↾_s 𝐴))𝑧))))
37	24, 36	raleqbidv 3336	. . . . . 6 ⊢ ((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) → (∀𝑧 ∈ 𝐴 (𝑥(le‘𝐾)𝑥 ∧ ((𝑥(le‘𝐾)𝑦 ∧ 𝑦(le‘𝐾)𝑧) → 𝑥(le‘𝐾)𝑧)) ↔ ∀𝑧 ∈ (Base‘(𝐾 ↾_s 𝐴))(𝑥(le‘(𝐾 ↾_s 𝐴))𝑥 ∧ ((𝑥(le‘(𝐾 ↾_s 𝐴))𝑦 ∧ 𝑦(le‘(𝐾 ↾_s 𝐴))𝑧) → 𝑥(le‘(𝐾 ↾_s 𝐴))𝑧))))
38	24, 37	raleqbidv 3336	. . . . 5 ⊢ ((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) → (∀𝑦 ∈ 𝐴 ∀𝑧 ∈ 𝐴 (𝑥(le‘𝐾)𝑥 ∧ ((𝑥(le‘𝐾)𝑦 ∧ 𝑦(le‘𝐾)𝑧) → 𝑥(le‘𝐾)𝑧)) ↔ ∀𝑦 ∈ (Base‘(𝐾 ↾_s 𝐴))∀𝑧 ∈ (Base‘(𝐾 ↾_s 𝐴))(𝑥(le‘(𝐾 ↾_s 𝐴))𝑥 ∧ ((𝑥(le‘(𝐾 ↾_s 𝐴))𝑦 ∧ 𝑦(le‘(𝐾 ↾_s 𝐴))𝑧) → 𝑥(le‘(𝐾 ↾_s 𝐴))𝑧))))
39	24, 38	raleqbidv 3336	. . . 4 ⊢ ((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) → (∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ∀𝑧 ∈ 𝐴 (𝑥(le‘𝐾)𝑥 ∧ ((𝑥(le‘𝐾)𝑦 ∧ 𝑦(le‘𝐾)𝑧) → 𝑥(le‘𝐾)𝑧)) ↔ ∀𝑥 ∈ (Base‘(𝐾 ↾_s 𝐴))∀𝑦 ∈ (Base‘(𝐾 ↾_s 𝐴))∀𝑧 ∈ (Base‘(𝐾 ↾_s 𝐴))(𝑥(le‘(𝐾 ↾_s 𝐴))𝑥 ∧ ((𝑥(le‘(𝐾 ↾_s 𝐴))𝑦 ∧ 𝑦(le‘(𝐾 ↾_s 𝐴))𝑧) → 𝑥(le‘(𝐾 ↾_s 𝐴))𝑧))))
40	39	anbi2d 628	. . 3 ⊢ ((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) → (((𝐾 ↾_s 𝐴) ∈ V ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ∀𝑧 ∈ 𝐴 (𝑥(le‘𝐾)𝑥 ∧ ((𝑥(le‘𝐾)𝑦 ∧ 𝑦(le‘𝐾)𝑧) → 𝑥(le‘𝐾)𝑧))) ↔ ((𝐾 ↾_s 𝐴) ∈ V ∧ ∀𝑥 ∈ (Base‘(𝐾 ↾_s 𝐴))∀𝑦 ∈ (Base‘(𝐾 ↾_s 𝐴))∀𝑧 ∈ (Base‘(𝐾 ↾_s 𝐴))(𝑥(le‘(𝐾 ↾_s 𝐴))𝑥 ∧ ((𝑥(le‘(𝐾 ↾_s 𝐴))𝑦 ∧ 𝑦(le‘(𝐾 ↾_s 𝐴))𝑧) → 𝑥(le‘(𝐾 ↾_s 𝐴))𝑧)))))
41	1, 21, 40	mpbi2and 709	. 2 ⊢ ((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) → ((𝐾 ↾_s 𝐴) ∈ V ∧ ∀𝑥 ∈ (Base‘(𝐾 ↾_s 𝐴))∀𝑦 ∈ (Base‘(𝐾 ↾_s 𝐴))∀𝑧 ∈ (Base‘(𝐾 ↾_s 𝐴))(𝑥(le‘(𝐾 ↾_s 𝐴))𝑥 ∧ ((𝑥(le‘(𝐾 ↾_s 𝐴))𝑦 ∧ 𝑦(le‘(𝐾 ↾_s 𝐴))𝑧) → 𝑥(le‘(𝐾 ↾_s 𝐴))𝑧))))
42		eqid 2726	. . 3 ⊢ (Base‘(𝐾 ↾_s 𝐴)) = (Base‘(𝐾 ↾_s 𝐴))
43		eqid 2726	. . 3 ⊢ (le‘(𝐾 ↾_s 𝐴)) = (le‘(𝐾 ↾_s 𝐴))
44	42, 43	isprs 18262	. 2 ⊢ ((𝐾 ↾_s 𝐴) ∈ Proset ↔ ((𝐾 ↾_s 𝐴) ∈ V ∧ ∀𝑥 ∈ (Base‘(𝐾 ↾_s 𝐴))∀𝑦 ∈ (Base‘(𝐾 ↾_s 𝐴))∀𝑧 ∈ (Base‘(𝐾 ↾_s 𝐴))(𝑥(le‘(𝐾 ↾_s 𝐴))𝑥 ∧ ((𝑥(le‘(𝐾 ↾_s 𝐴))𝑦 ∧ 𝑦(le‘(𝐾 ↾_s 𝐴))𝑧) → 𝑥(le‘(𝐾 ↾_s 𝐴))𝑧))))
45	41, 44	sylibr 233	1 ⊢ ((𝐾 ∈ Proset ∧ 𝐴 ⊆ 𝐵) → (𝐾 ↾_s 𝐴) ∈ Proset )

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 395 = wceq 1533 ∈ wcel 2098 ∀wral 3055 Vcvv 3468 ⊆ wss 3943 class class class wbr 5141 ‘cfv 6537 (class class class)co 7405 Basecbs 17153 ↾_s cress 17182 lecple 17213 Proset cproset 18258

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2163 ax-ext 2697 ax-sep 5292 ax-nul 5299 ax-pow 5356 ax-pr 5420 ax-un 7722 ax-cnex 11168 ax-resscn 11169 ax-1cn 11170 ax-icn 11171 ax-addcl 11172 ax-addrcl 11173 ax-mulcl 11174 ax-mulrcl 11175 ax-mulcom 11176 ax-addass 11177 ax-mulass 11178 ax-distr 11179 ax-i2m1 11180 ax-1ne0 11181 ax-1rid 11182 ax-rnegex 11183 ax-rrecex 11184 ax-cnre 11185 ax-pre-lttri 11186 ax-pre-lttrn 11187 ax-pre-ltadd 11188 ax-pre-mulgt0 11189

This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2704 df-cleq 2718 df-clel 2804 df-nfc 2879 df-ne 2935 df-nel 3041 df-ral 3056 df-rex 3065 df-reu 3371 df-rab 3427 df-v 3470 df-sbc 3773 df-csb 3889 df-dif 3946 df-un 3948 df-in 3950 df-ss 3960 df-pss 3962 df-nul 4318 df-if 4524 df-pw 4599 df-sn 4624 df-pr 4626 df-op 4630 df-uni 4903 df-iun 4992 df-br 5142 df-opab 5204 df-mpt 5225 df-tr 5259 df-id 5567 df-eprel 5573 df-po 5581 df-so 5582 df-fr 5624 df-we 5626 df-xp 5675 df-rel 5676 df-cnv 5677 df-co 5678 df-dm 5679 df-rn 5680 df-res 5681 df-ima 5682 df-pred 6294 df-ord 6361 df-on 6362 df-lim 6363 df-suc 6364 df-iota 6489 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7361 df-ov 7408 df-oprab 7409 df-mpo 7410 df-om 7853 df-2nd 7975 df-frecs 8267 df-wrecs 8298 df-recs 8372 df-rdg 8411 df-er 8705 df-en 8942 df-dom 8943 df-sdom 8944 df-pnf 11254 df-mnf 11255 df-xr 11256 df-ltxr 11257 df-le 11258 df-sub 11450 df-neg 11451 df-nn 12217 df-2 12279 df-3 12280 df-4 12281 df-5 12282 df-6 12283 df-7 12284 df-8 12285 df-9 12286 df-dec 12682 df-sets 17106 df-slot 17124 df-ndx 17136 df-base 17154 df-ress 17183 df-ple 17226 df-proset 18260

This theorem is referenced by: prsssdm 33427 ordtrestNEW 33431 ordtrest2NEW 33433

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