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Theorem opsrtoslem1 21926

Description: Lemma for opsrtos 21928. (Contributed by Mario Carneiro, 8-Feb-2015.)

**Hypotheses**
Ref	Expression
opsrso.o	⊢ 𝑂 = ((𝐼 ordPwSer 𝑅)‘𝑇)
opsrso.i	⊢ (𝜑 → 𝐼 ∈ 𝑉)
opsrso.r	⊢ (𝜑 → 𝑅 ∈ Toset)
opsrso.t	⊢ (𝜑 → 𝑇 ⊆ (𝐼 × 𝐼))
opsrso.w	⊢ (𝜑 → 𝑇 We 𝐼)
opsrtoslem.s	⊢ 𝑆 = (𝐼 mPwSer 𝑅)
opsrtoslem.b	⊢ 𝐵 = (Base‘𝑆)
opsrtoslem.q	⊢ < = (lt‘𝑅)
opsrtoslem.c	⊢ 𝐶 = (𝑇 <_bag 𝐼)
opsrtoslem.d	⊢ 𝐷 = {ℎ ∈ (ℕ₀ ↑_m 𝐼) ∣ (^◡ℎ “ ℕ) ∈ Fin}
opsrtoslem.ps	⊢ (𝜓 ↔ ∃𝑧 ∈ 𝐷 ((𝑥‘𝑧) < (𝑦‘𝑧) ∧ ∀𝑤 ∈ 𝐷 (𝑤𝐶𝑧 → (𝑥‘𝑤) = (𝑦‘𝑤))))
opsrtoslem.l	⊢ ≤ = (le‘𝑂)

**Assertion**
Ref	Expression
opsrtoslem1	⊢ (𝜑 → ≤ = (({⟨𝑥, 𝑦⟩ ∣ 𝜓} ∩ (𝐵 × 𝐵)) ∪ ( I ↾ 𝐵)))

Distinct variable groups: 𝑥,𝑦,𝐵 𝑥,𝑤,𝑦,𝑧,𝐶 𝑤,ℎ,𝑥,𝑦,𝑧,𝐼 𝜑,ℎ,𝑤,𝑥,𝑦,𝑧 𝑤,𝐷,𝑥,𝑦,𝑧 𝑤, < ,𝑥,𝑦,𝑧 𝑤,𝑅,𝑥,𝑦,𝑧 𝑤,𝑇,𝑥,𝑦,𝑧 Allowed substitution hints: 𝜓(𝑥,𝑦,𝑧,𝑤,ℎ) 𝐵(𝑧,𝑤,ℎ) 𝐶(ℎ) 𝐷(ℎ) 𝑅(ℎ) 𝑆(𝑥,𝑦,𝑧,𝑤,ℎ) < (ℎ) 𝑇(ℎ) ≤ (𝑥,𝑦,𝑧,𝑤,ℎ) 𝑂(𝑥,𝑦,𝑧,𝑤,ℎ) 𝑉(𝑥,𝑦,𝑧,𝑤,ℎ)

**Proof of Theorem opsrtoslem1**
Step	Hyp	Ref	Expression
1		opsrtoslem.s	. . 3 ⊢ 𝑆 = (𝐼 mPwSer 𝑅)
2		opsrso.o	. . 3 ⊢ 𝑂 = ((𝐼 ordPwSer 𝑅)‘𝑇)
3		opsrtoslem.b	. . 3 ⊢ 𝐵 = (Base‘𝑆)
4		opsrtoslem.q	. . 3 ⊢ < = (lt‘𝑅)
5		opsrtoslem.c	. . 3 ⊢ 𝐶 = (𝑇 <_bag 𝐼)
6		opsrtoslem.d	. . 3 ⊢ 𝐷 = {ℎ ∈ (ℕ₀ ↑_m 𝐼) ∣ (^◡ℎ “ ℕ) ∈ Fin}
7		opsrtoslem.l	. . 3 ⊢ ≤ = (le‘𝑂)
8		opsrso.t	. . 3 ⊢ (𝜑 → 𝑇 ⊆ (𝐼 × 𝐼))
9	1, 2, 3, 4, 5, 6, 7, 8	opsrle 21912	. 2 ⊢ (𝜑 → ≤ = {⟨𝑥, 𝑦⟩ ∣ ({𝑥, 𝑦} ⊆ 𝐵 ∧ (∃𝑧 ∈ 𝐷 ((𝑥‘𝑧) < (𝑦‘𝑧) ∧ ∀𝑤 ∈ 𝐷 (𝑤𝐶𝑧 → (𝑥‘𝑤) = (𝑦‘𝑤))) ∨ 𝑥 = 𝑦))})
10		unopab 5220	. . 3 ⊢ ({⟨𝑥, 𝑦⟩ ∣ ({𝑥, 𝑦} ⊆ 𝐵 ∧ 𝜓)} ∪ {⟨𝑥, 𝑦⟩ ∣ ({𝑥, 𝑦} ⊆ 𝐵 ∧ 𝑥 = 𝑦)}) = {⟨𝑥, 𝑦⟩ ∣ (({𝑥, 𝑦} ⊆ 𝐵 ∧ 𝜓) ∨ ({𝑥, 𝑦} ⊆ 𝐵 ∧ 𝑥 = 𝑦))}
11		inopab 5819	. . . . 5 ⊢ ({⟨𝑥, 𝑦⟩ ∣ 𝜓} ∩ {⟨𝑥, 𝑦⟩ ∣ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)}) = {⟨𝑥, 𝑦⟩ ∣ (𝜓 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵))}
12		df-xp 5672	. . . . . 6 ⊢ (𝐵 × 𝐵) = {⟨𝑥, 𝑦⟩ ∣ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)}
13	12	ineq2i 4201	. . . . 5 ⊢ ({⟨𝑥, 𝑦⟩ ∣ 𝜓} ∩ (𝐵 × 𝐵)) = ({⟨𝑥, 𝑦⟩ ∣ 𝜓} ∩ {⟨𝑥, 𝑦⟩ ∣ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)})
14		vex 3470	. . . . . . . . 9 ⊢ 𝑥 ∈ V
15		vex 3470	. . . . . . . . 9 ⊢ 𝑦 ∈ V
16	14, 15	prss 4815	. . . . . . . 8 ⊢ ((𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) ↔ {𝑥, 𝑦} ⊆ 𝐵)
17	16	anbi1i 623	. . . . . . 7 ⊢ (((𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) ∧ 𝜓) ↔ ({𝑥, 𝑦} ⊆ 𝐵 ∧ 𝜓))
18		ancom 460	. . . . . . 7 ⊢ (((𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) ∧ 𝜓) ↔ (𝜓 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)))
19	17, 18	bitr3i 277	. . . . . 6 ⊢ (({𝑥, 𝑦} ⊆ 𝐵 ∧ 𝜓) ↔ (𝜓 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)))
20	19	opabbii 5205	. . . . 5 ⊢ {⟨𝑥, 𝑦⟩ ∣ ({𝑥, 𝑦} ⊆ 𝐵 ∧ 𝜓)} = {⟨𝑥, 𝑦⟩ ∣ (𝜓 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵))}
21	11, 13, 20	3eqtr4i 2762	. . . 4 ⊢ ({⟨𝑥, 𝑦⟩ ∣ 𝜓} ∩ (𝐵 × 𝐵)) = {⟨𝑥, 𝑦⟩ ∣ ({𝑥, 𝑦} ⊆ 𝐵 ∧ 𝜓)}
22		opabresid 6039	. . . . 5 ⊢ ( I ↾ 𝐵) = {⟨𝑥, 𝑦⟩ ∣ (𝑥 ∈ 𝐵 ∧ 𝑦 = 𝑥)}
23		equcom 2013	. . . . . . . . 9 ⊢ (𝑥 = 𝑦 ↔ 𝑦 = 𝑥)
24	23	anbi2i 622	. . . . . . . 8 ⊢ ((𝑥 ∈ 𝐵 ∧ 𝑥 = 𝑦) ↔ (𝑥 ∈ 𝐵 ∧ 𝑦 = 𝑥))
25		eleq1w 2808	. . . . . . . . . 10 ⊢ (𝑥 = 𝑦 → (𝑥 ∈ 𝐵 ↔ 𝑦 ∈ 𝐵))
26	25	biimpac 478	. . . . . . . . 9 ⊢ ((𝑥 ∈ 𝐵 ∧ 𝑥 = 𝑦) → 𝑦 ∈ 𝐵)
27	26	pm4.71i 559	. . . . . . . 8 ⊢ ((𝑥 ∈ 𝐵 ∧ 𝑥 = 𝑦) ↔ ((𝑥 ∈ 𝐵 ∧ 𝑥 = 𝑦) ∧ 𝑦 ∈ 𝐵))
28	24, 27	bitr3i 277	. . . . . . 7 ⊢ ((𝑥 ∈ 𝐵 ∧ 𝑦 = 𝑥) ↔ ((𝑥 ∈ 𝐵 ∧ 𝑥 = 𝑦) ∧ 𝑦 ∈ 𝐵))
29		an32 643	. . . . . . 7 ⊢ (((𝑥 ∈ 𝐵 ∧ 𝑥 = 𝑦) ∧ 𝑦 ∈ 𝐵) ↔ ((𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) ∧ 𝑥 = 𝑦))
30	16	anbi1i 623	. . . . . . 7 ⊢ (((𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) ∧ 𝑥 = 𝑦) ↔ ({𝑥, 𝑦} ⊆ 𝐵 ∧ 𝑥 = 𝑦))
31	28, 29, 30	3bitri 297	. . . . . 6 ⊢ ((𝑥 ∈ 𝐵 ∧ 𝑦 = 𝑥) ↔ ({𝑥, 𝑦} ⊆ 𝐵 ∧ 𝑥 = 𝑦))
32	31	opabbii 5205	. . . . 5 ⊢ {⟨𝑥, 𝑦⟩ ∣ (𝑥 ∈ 𝐵 ∧ 𝑦 = 𝑥)} = {⟨𝑥, 𝑦⟩ ∣ ({𝑥, 𝑦} ⊆ 𝐵 ∧ 𝑥 = 𝑦)}
33	22, 32	eqtri 2752	. . . 4 ⊢ ( I ↾ 𝐵) = {⟨𝑥, 𝑦⟩ ∣ ({𝑥, 𝑦} ⊆ 𝐵 ∧ 𝑥 = 𝑦)}
34	21, 33	uneq12i 4153	. . 3 ⊢ (({⟨𝑥, 𝑦⟩ ∣ 𝜓} ∩ (𝐵 × 𝐵)) ∪ ( I ↾ 𝐵)) = ({⟨𝑥, 𝑦⟩ ∣ ({𝑥, 𝑦} ⊆ 𝐵 ∧ 𝜓)} ∪ {⟨𝑥, 𝑦⟩ ∣ ({𝑥, 𝑦} ⊆ 𝐵 ∧ 𝑥 = 𝑦)})
35		opsrtoslem.ps	. . . . . . 7 ⊢ (𝜓 ↔ ∃𝑧 ∈ 𝐷 ((𝑥‘𝑧) < (𝑦‘𝑧) ∧ ∀𝑤 ∈ 𝐷 (𝑤𝐶𝑧 → (𝑥‘𝑤) = (𝑦‘𝑤))))
36	35	orbi1i 910	. . . . . 6 ⊢ ((𝜓 ∨ 𝑥 = 𝑦) ↔ (∃𝑧 ∈ 𝐷 ((𝑥‘𝑧) < (𝑦‘𝑧) ∧ ∀𝑤 ∈ 𝐷 (𝑤𝐶𝑧 → (𝑥‘𝑤) = (𝑦‘𝑤))) ∨ 𝑥 = 𝑦))
37	36	anbi2i 622	. . . . 5 ⊢ (({𝑥, 𝑦} ⊆ 𝐵 ∧ (𝜓 ∨ 𝑥 = 𝑦)) ↔ ({𝑥, 𝑦} ⊆ 𝐵 ∧ (∃𝑧 ∈ 𝐷 ((𝑥‘𝑧) < (𝑦‘𝑧) ∧ ∀𝑤 ∈ 𝐷 (𝑤𝐶𝑧 → (𝑥‘𝑤) = (𝑦‘𝑤))) ∨ 𝑥 = 𝑦)))
38		andi 1004	. . . . 5 ⊢ (({𝑥, 𝑦} ⊆ 𝐵 ∧ (𝜓 ∨ 𝑥 = 𝑦)) ↔ (({𝑥, 𝑦} ⊆ 𝐵 ∧ 𝜓) ∨ ({𝑥, 𝑦} ⊆ 𝐵 ∧ 𝑥 = 𝑦)))
39	37, 38	bitr3i 277	. . . 4 ⊢ (({𝑥, 𝑦} ⊆ 𝐵 ∧ (∃𝑧 ∈ 𝐷 ((𝑥‘𝑧) < (𝑦‘𝑧) ∧ ∀𝑤 ∈ 𝐷 (𝑤𝐶𝑧 → (𝑥‘𝑤) = (𝑦‘𝑤))) ∨ 𝑥 = 𝑦)) ↔ (({𝑥, 𝑦} ⊆ 𝐵 ∧ 𝜓) ∨ ({𝑥, 𝑦} ⊆ 𝐵 ∧ 𝑥 = 𝑦)))
40	39	opabbii 5205	. . 3 ⊢ {⟨𝑥, 𝑦⟩ ∣ ({𝑥, 𝑦} ⊆ 𝐵 ∧ (∃𝑧 ∈ 𝐷 ((𝑥‘𝑧) < (𝑦‘𝑧) ∧ ∀𝑤 ∈ 𝐷 (𝑤𝐶𝑧 → (𝑥‘𝑤) = (𝑦‘𝑤))) ∨ 𝑥 = 𝑦))} = {⟨𝑥, 𝑦⟩ ∣ (({𝑥, 𝑦} ⊆ 𝐵 ∧ 𝜓) ∨ ({𝑥, 𝑦} ⊆ 𝐵 ∧ 𝑥 = 𝑦))}
41	10, 34, 40	3eqtr4ri 2763	. 2 ⊢ {⟨𝑥, 𝑦⟩ ∣ ({𝑥, 𝑦} ⊆ 𝐵 ∧ (∃𝑧 ∈ 𝐷 ((𝑥‘𝑧) < (𝑦‘𝑧) ∧ ∀𝑤 ∈ 𝐷 (𝑤𝐶𝑧 → (𝑥‘𝑤) = (𝑦‘𝑤))) ∨ 𝑥 = 𝑦))} = (({⟨𝑥, 𝑦⟩ ∣ 𝜓} ∩ (𝐵 × 𝐵)) ∪ ( I ↾ 𝐵))
42	9, 41	eqtrdi 2780	1 ⊢ (𝜑 → ≤ = (({⟨𝑥, 𝑦⟩ ∣ 𝜓} ∩ (𝐵 × 𝐵)) ∪ ( I ↾ 𝐵)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 ∨ wo 844 = wceq 1533 ∈ wcel 2098 ∀wral 3053 ∃wrex 3062 {crab 3424 ∪ cun 3938 ∩ cin 3939 ⊆ wss 3940 {cpr 4622 class class class wbr 5138 {copab 5200 I cid 5563 We wwe 5620 × cxp 5664 ^◡ccnv 5665 ↾ cres 5668 “ cima 5669 ‘cfv 6533 (class class class)co 7401 ↑_m cmap 8816 Fincfn 8935 ℕcn 12209 ℕ₀cn0 12469 Basecbs 17143 lecple 17203 ltcplt 18263 Tosetctos 18371 mPwSer cmps 21766 <_bag cltb 21769 ordPwSer copws 21770

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 2695 ax-rep 5275 ax-sep 5289 ax-nul 5296 ax-pow 5353 ax-pr 5417 ax-un 7718 ax-cnex 11162 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182

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 2526 df-eu 2555 df-clab 2702 df-cleq 2716 df-clel 2802 df-nfc 2877 df-ne 2933 df-nel 3039 df-ral 3054 df-rex 3063 df-reu 3369 df-rab 3425 df-v 3468 df-sbc 3770 df-csb 3886 df-dif 3943 df-un 3945 df-in 3947 df-ss 3957 df-pss 3959 df-nul 4315 df-if 4521 df-pw 4596 df-sn 4621 df-pr 4623 df-op 4627 df-uni 4900 df-iun 4989 df-br 5139 df-opab 5201 df-mpt 5222 df-tr 5256 df-id 5564 df-eprel 5570 df-po 5578 df-so 5579 df-fr 5621 df-we 5623 df-xp 5672 df-rel 5673 df-cnv 5674 df-co 5675 df-dm 5676 df-rn 5677 df-res 5678 df-ima 5679 df-pred 6290 df-ord 6357 df-on 6358 df-lim 6359 df-suc 6360 df-iota 6485 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-ov 7404 df-oprab 7405 df-mpo 7406 df-om 7849 df-2nd 7969 df-frecs 8261 df-wrecs 8292 df-recs 8366 df-rdg 8405 df-er 8699 df-en 8936 df-dom 8937 df-sdom 8938 df-pnf 11247 df-mnf 11248 df-ltxr 11250 df-nn 12210 df-2 12272 df-3 12273 df-4 12274 df-5 12275 df-6 12276 df-7 12277 df-8 12278 df-9 12279 df-dec 12675 df-sets 17096 df-slot 17114 df-ndx 17126 df-base 17144 df-ple 17216 df-psr 21771 df-opsr 21775

This theorem is referenced by: opsrtoslem2 21927

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