Theorem ablpnpcan 19852

Description: Cancellation law for mixed addition and subtraction. (pnpcan 11546 analog.) (Contributed by NM, 29-May-2015.)

Hypotheses

Ref	Expression
ablsubadd.b	⊢ 𝐵 = (Base‘𝐺)
ablsubadd.p	⊢ + = (+g‘𝐺)
ablsubadd.m	⊢ − = (-g‘𝐺)
ablsubsub.g	⊢ (𝜑 → 𝐺 ∈ Abel)
ablsubsub.x	⊢ (𝜑 → 𝑋 ∈ 𝐵)
ablsubsub.y	⊢ (𝜑 → 𝑌 ∈ 𝐵)
ablsubsub.z	⊢ (𝜑 → 𝑍 ∈ 𝐵)
ablpnpcan.g	⊢ (𝜑 → 𝐺 ∈ Abel)
ablpnpcan.x	⊢ (𝜑 → 𝑋 ∈ 𝐵)
ablpnpcan.y	⊢ (𝜑 → 𝑌 ∈ 𝐵)
ablpnpcan.z	⊢ (𝜑 → 𝑍 ∈ 𝐵)

Assertion

Ref	Expression
ablpnpcan	⊢ (𝜑 → ((𝑋 + 𝑌) − (𝑋 + 𝑍)) = (𝑌 − 𝑍))

Proof of Theorem ablpnpcan

Step	Hyp	Ref	Expression
1		ablsubsub.g	. . 3 ⊢ (𝜑 → 𝐺 ∈ Abel)
2		ablsubsub.x	. . 3 ⊢ (𝜑 → 𝑋 ∈ 𝐵)
3		ablsubsub.y	. . 3 ⊢ (𝜑 → 𝑌 ∈ 𝐵)
4		ablsubsub.z	. . 3 ⊢ (𝜑 → 𝑍 ∈ 𝐵)
5		ablsubadd.b	. . . 4 ⊢ 𝐵 = (Base‘𝐺)
6		ablsubadd.p	. . . 4 ⊢ + = (+g‘𝐺)
7		ablsubadd.m	. . . 4 ⊢ − = (-g‘𝐺)
8	5, 6, 7	ablsub4 19843	. . 3 ⊢ ((𝐺 ∈ Abel ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵)) → ((𝑋 + 𝑌) − (𝑋 + 𝑍)) = ((𝑋 − 𝑋) + (𝑌 − 𝑍)))
9	1, 2, 3, 2, 4, 8	syl122anc 1378	. 2 ⊢ (𝜑 → ((𝑋 + 𝑌) − (𝑋 + 𝑍)) = ((𝑋 − 𝑋) + (𝑌 − 𝑍)))
10		ablgrp 19818	. . . . 5 ⊢ (𝐺 ∈ Abel → 𝐺 ∈ Grp)
11	1, 10	syl 17	. . . 4 ⊢ (𝜑 → 𝐺 ∈ Grp)
12		eqid 2735	. . . . 5 ⊢ (0g‘𝐺) = (0g‘𝐺)
13	5, 12, 7	grpsubid 19055	. . . 4 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ 𝐵) → (𝑋 − 𝑋) = (0g‘𝐺))
14	11, 2, 13	syl2anc 584	. . 3 ⊢ (𝜑 → (𝑋 − 𝑋) = (0g‘𝐺))
15	14	oveq1d 7446	. 2 ⊢ (𝜑 → ((𝑋 − 𝑋) + (𝑌 − 𝑍)) = ((0g‘𝐺) + (𝑌 − 𝑍)))
16	5, 7	grpsubcl 19051	. . . 4 ⊢ ((𝐺 ∈ Grp ∧ 𝑌 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵) → (𝑌 − 𝑍) ∈ 𝐵)
17	11, 3, 4, 16	syl3anc 1370	. . 3 ⊢ (𝜑 → (𝑌 − 𝑍) ∈ 𝐵)
18	5, 6, 12	grplid 18998	. . 3 ⊢ ((𝐺 ∈ Grp ∧ (𝑌 − 𝑍) ∈ 𝐵) → ((0g‘𝐺) + (𝑌 − 𝑍)) = (𝑌 − 𝑍))
19	11, 17, 18	syl2anc 584	. 2 ⊢ (𝜑 → ((0g‘𝐺) + (𝑌 − 𝑍)) = (𝑌 − 𝑍))
20	9, 15, 19	3eqtrd 2779	1 ⊢ (𝜑 → ((𝑋 + 𝑌) − (𝑋 + 𝑍)) = (𝑌 − 𝑍))

Syntax hints:   → wi 4   = wceq 1537   ∈ wcel 2106  ‘cfv 6563  (class class class)co 7431  Basecbs 17245  +_gcplusg 17298  0_gc0g 17486  Grpcgrp 18964  -_gcsg 18966  Abelcabl 19814

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1908  ax-6 1965  ax-7 2005  ax-8 2108  ax-9 2116  ax-10 2139  ax-11 2155  ax-12 2175  ax-ext 2706  ax-sep 5302  ax-nul 5312  ax-pow 5371  ax-pr 5438  ax-un 7754

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1540  df-fal 1550  df-ex 1777  df-nf 1781  df-sb 2063  df-mo 2538  df-eu 2567  df-clab 2713  df-cleq 2727  df-clel 2814  df-nfc 2890  df-ne 2939  df-ral 3060  df-rex 3069  df-rmo 3378  df-reu 3379  df-rab 3434  df-v 3480  df-sbc 3792  df-csb 3909  df-dif 3966  df-un 3968  df-in 3970  df-ss 3980  df-nul 4340  df-if 4532  df-pw 4607  df-sn 4632  df-pr 4634  df-op 4638  df-uni 4913  df-iun 4998  df-br 5149  df-opab 5211  df-mpt 5232  df-id 5583  df-xp 5695  df-rel 5696  df-cnv 5697  df-co 5698  df-dm 5699  df-rn 5700  df-res 5701  df-ima 5702  df-iota 6516  df-fun 6565  df-fn 6566  df-f 6567  df-fv 6571  df-riota 7388  df-ov 7434  df-oprab 7435  df-mpo 7436  df-1st 8013  df-2nd 8014  df-0g 17488  df-mgm 18666  df-sgrp 18745  df-mnd 18761  df-grp 18967  df-minusg 18968  df-sbg 18969  df-cmn 19815  df-abl 19816

This theorem is referenced by:  hdmaprnlem7N  41838