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Theorem plngrotlem3 28993

Description: Lemma for plngrot 28994. (Contributed by Thierry Arnoux, 17-Jun-2026.)

**Hypotheses**
Ref	Expression
plngval.p	⊢ 𝑃 = (Base‘𝐺)
plngval.i	⊢ 𝐼 = (Itv‘𝐺)
plngval.1	⊢ 𝐿 = (LineG‘𝐺)
plngval.e	⊢ 𝐸 = (hlG‘𝐺)
plngval.g	⊢ (𝜑 → 𝐺 ∈ TarskiG)
plngrot.x	⊢ (𝜑 → 𝑋 ∈ (𝑃 ∖ (𝑍𝐿𝑌)))
plngrot.y	⊢ (𝜑 → 𝑌 ∈ 𝑃)
plngrot.z	⊢ (𝜑 → 𝑍 ∈ (𝑃 ∖ (𝑋𝐿𝑌)))
plngrot.1	⊢ (𝜑 → 𝑋 ≠ 𝑌)
plngrotlem3.1	⊢ 𝑂 = {⟨𝑎, 𝑏⟩ ∣ ((𝑎 ∈ (𝑃 ∖ (𝑋𝐿𝑌)) ∧ 𝑏 ∈ (𝑃 ∖ (𝑋𝐿𝑌))) ∧ ∃𝑡 ∈ (𝑋𝐿𝑌)𝑡 ∈ (𝑎𝐼𝑏))}

**Assertion**
Ref	Expression
plngrotlem3	⊢ (𝜑 → ((𝑋𝐿𝑌)𝐸𝑍) ⊆ ((𝑍𝐿𝑌)𝐸𝑋))

Distinct variable groups: 𝑡,𝐸 𝐺,𝑎,𝑏,𝑡 𝐼,𝑎,𝑏,𝑡 𝐿,𝑎,𝑏,𝑡 𝑂,𝑎,𝑏,𝑡 𝑃,𝑎,𝑏,𝑡 𝑋,𝑎,𝑏,𝑡 𝑌,𝑎,𝑏,𝑡 𝑍,𝑎,𝑏,𝑡 𝜑,𝑡 Allowed substitution hints: 𝜑(𝑎,𝑏) 𝐸(𝑎,𝑏)

Proof of Theorem plngrotlem3 Dummy variable 𝑤 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		plngval.p	. . . 4 ⊢ 𝑃 = (Base‘𝐺)
2		plngval.i	. . . 4 ⊢ 𝐼 = (Itv‘𝐺)
3		plngval.1	. . . 4 ⊢ 𝐿 = (LineG‘𝐺)
4		plngval.e	. . . 4 ⊢ 𝐸 = (hlG‘𝐺)
5		plngval.g	. . . . 5 ⊢ (𝜑 → 𝐺 ∈ TarskiG)
6	5	ad3antrrr 740	. . . 4 ⊢ ((((𝜑 ∧ 𝑤 ∈ 𝑃) ∧ 𝑌 ∈ (𝑍𝐼𝑤)) ∧ 𝑌 ≠ 𝑤) → 𝐺 ∈ TarskiG)
7		plngrot.x	. . . . 5 ⊢ (𝜑 → 𝑋 ∈ (𝑃 ∖ (𝑍𝐿𝑌)))
8	7	ad3antrrr 740	. . . 4 ⊢ ((((𝜑 ∧ 𝑤 ∈ 𝑃) ∧ 𝑌 ∈ (𝑍𝐼𝑤)) ∧ 𝑌 ≠ 𝑤) → 𝑋 ∈ (𝑃 ∖ (𝑍𝐿𝑌)))
9		plngrot.y	. . . . 5 ⊢ (𝜑 → 𝑌 ∈ 𝑃)
10	9	ad3antrrr 740	. . . 4 ⊢ ((((𝜑 ∧ 𝑤 ∈ 𝑃) ∧ 𝑌 ∈ (𝑍𝐼𝑤)) ∧ 𝑌 ≠ 𝑤) → 𝑌 ∈ 𝑃)
11		plngrot.z	. . . . 5 ⊢ (𝜑 → 𝑍 ∈ (𝑃 ∖ (𝑋𝐿𝑌)))
12	11	ad3antrrr 740	. . . 4 ⊢ ((((𝜑 ∧ 𝑤 ∈ 𝑃) ∧ 𝑌 ∈ (𝑍𝐼𝑤)) ∧ 𝑌 ≠ 𝑤) → 𝑍 ∈ (𝑃 ∖ (𝑋𝐿𝑌)))
13		plngrot.1	. . . . 5 ⊢ (𝜑 → 𝑋 ≠ 𝑌)
14	13	ad3antrrr 740	. . . 4 ⊢ ((((𝜑 ∧ 𝑤 ∈ 𝑃) ∧ 𝑌 ∈ (𝑍𝐼𝑤)) ∧ 𝑌 ≠ 𝑤) → 𝑋 ≠ 𝑌)
15		plngrotlem3.1	. . . 4 ⊢ 𝑂 = {⟨𝑎, 𝑏⟩ ∣ ((𝑎 ∈ (𝑃 ∖ (𝑋𝐿𝑌)) ∧ 𝑏 ∈ (𝑃 ∖ (𝑋𝐿𝑌))) ∧ ∃𝑡 ∈ (𝑋𝐿𝑌)𝑡 ∈ (𝑎𝐼𝑏))}
16		simpllr 785	. . . 4 ⊢ ((((𝜑 ∧ 𝑤 ∈ 𝑃) ∧ 𝑌 ∈ (𝑍𝐼𝑤)) ∧ 𝑌 ≠ 𝑤) → 𝑤 ∈ 𝑃)
17		simplr 778	. . . 4 ⊢ ((((𝜑 ∧ 𝑤 ∈ 𝑃) ∧ 𝑌 ∈ (𝑍𝐼𝑤)) ∧ 𝑌 ≠ 𝑤) → 𝑌 ∈ (𝑍𝐼𝑤))
18		simpr 488	. . . 4 ⊢ ((((𝜑 ∧ 𝑤 ∈ 𝑃) ∧ 𝑌 ∈ (𝑍𝐼𝑤)) ∧ 𝑌 ≠ 𝑤) → 𝑌 ≠ 𝑤)
19	1, 2, 3, 4, 6, 8, 10, 12, 14, 15, 16, 17, 18	plngrotlem2 28992	. . 3 ⊢ ((((𝜑 ∧ 𝑤 ∈ 𝑃) ∧ 𝑌 ∈ (𝑍𝐼𝑤)) ∧ 𝑌 ≠ 𝑤) → ((𝑋𝐿𝑌)𝐸𝑍) ⊆ ((𝑍𝐿𝑌)𝐸𝑋))
20	19	anasss 470	. 2 ⊢ (((𝜑 ∧ 𝑤 ∈ 𝑃) ∧ (𝑌 ∈ (𝑍𝐼𝑤) ∧ 𝑌 ≠ 𝑤)) → ((𝑋𝐿𝑌)𝐸𝑍) ⊆ ((𝑍𝐿𝑌)𝐸𝑋))
21		eqid 2762	. . 3 ⊢ (dist‘𝐺) = (dist‘𝐺)
22	11	eldifad 3916	. . 3 ⊢ (𝜑 → 𝑍 ∈ 𝑃)
23	1	fvexi 6881	. . . . 5 ⊢ 𝑃 ∈ V
24	23	a1i 11	. . . 4 ⊢ (𝜑 → 𝑃 ∈ V)
25	7	eldifad 3916	. . . 4 ⊢ (𝜑 → 𝑋 ∈ 𝑃)
26	24, 25, 9, 13	nehash2 14487	. . 3 ⊢ (𝜑 → 2 ≤ (♯‘𝑃))
27	1, 21, 2, 5, 22, 9, 26	tgbtwndiff 28672	. 2 ⊢ (𝜑 → ∃𝑤 ∈ 𝑃 (𝑌 ∈ (𝑍𝐼𝑤) ∧ 𝑌 ≠ 𝑤))
28	20, 27	r19.29a 3170	1 ⊢ (𝜑 → ((𝑋𝐿𝑌)𝐸𝑍) ⊆ ((𝑍𝐿𝑌)𝐸𝑋))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 399 = wceq 1560 ∈ wcel 2142 ≠ wne 2957 ∃wrex 3086 Vcvv 3454 ∖ cdif 3901 ⊆ wss 3904 {copab 5162 ‘cfv 6521 (class class class)co 7396 Basecbs 17245 distcds 17295 TarskiGcstrkg 28593 Itvcitv 28599 LineGclng 28600 hlGcplng 28977

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-rep 5227 ax-sep 5246 ax-nul 5256 ax-pow 5322 ax-pr 5390 ax-un 7718 ax-cnex 11129 ax-resscn 11130 ax-1cn 11131 ax-icn 11132 ax-addcl 11133 ax-addrcl 11134 ax-mulcl 11135 ax-mulrcl 11136 ax-mulcom 11137 ax-addass 11138 ax-mulass 11139 ax-distr 11140 ax-i2m1 11141 ax-1ne0 11142 ax-1rid 11143 ax-rnegex 11144 ax-rrecex 11145 ax-cnre 11146 ax-pre-lttri 11147 ax-pre-lttrn 11148 ax-pre-ltadd 11149 ax-pre-mulgt0 11150

This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1099 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-nf 1804 df-sb 2091 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3456 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4481 df-pw 4557 df-sn 4583 df-pr 4585 df-tp 4587 df-op 4589 df-uni 4866 df-int 4906 df-iun 4951 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5542 df-eprel 5547 df-po 5555 df-so 5556 df-fr 5600 df-we 5602 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-pred 6288 df-ord 6349 df-on 6350 df-lim 6351 df-suc 6352 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-f1 6526 df-fo 6527 df-f1o 6528 df-fv 6529 df-riota 7353 df-ov 7399 df-oprab 7400 df-mpo 7401 df-om 7847 df-1st 7970 df-2nd 7971 df-frecs 8262 df-wrecs 8293 df-recs 8342 df-rdg 8381 df-1o 8437 df-oadd 8441 df-er 8678 df-map 8810 df-pm 8811 df-en 8928 df-dom 8929 df-sdom 8930 df-fin 8931 df-dju 9859 df-card 9897 df-pnf 11218 df-mnf 11219 df-xr 11220 df-ltxr 11221 df-le 11222 df-sub 11416 df-neg 11417 df-nn 12211 df-2 12280 df-3 12281 df-n0 12482 df-xnn0 12555 df-z 12569 df-uz 12840 df-fz 13513 df-fzo 13660 df-hash 14344 df-word 14527 df-concat 14584 df-s1 14610 df-s2 14861 df-s3 14862 df-trkgc 28614 df-trkgb 28615 df-trkgcb 28616 df-trkgld 28618 df-trkg 28619 df-cgrg 28677 df-leg 28749 df-hlg 28767 df-mir 28823 df-rag 28864 df-perpg 28866 df-hpg 28928 df-plng 28978

This theorem is referenced by: plngrot 28994

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