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Theorem srgpcomp 19683
Description: If two elements of a semiring commute, they also commute if one of the elements is raised to a higher power. (Contributed by AV, 23-Aug-2019.)
Hypotheses
Ref Expression
srgpcomp.s 𝑆 = (Base‘𝑅)
srgpcomp.m × = (.r𝑅)
srgpcomp.g 𝐺 = (mulGrp‘𝑅)
srgpcomp.e = (.g𝐺)
srgpcomp.r (𝜑𝑅 ∈ SRing)
srgpcomp.a (𝜑𝐴𝑆)
srgpcomp.b (𝜑𝐵𝑆)
srgpcomp.k (𝜑𝐾 ∈ ℕ0)
srgpcomp.c (𝜑 → (𝐴 × 𝐵) = (𝐵 × 𝐴))
Assertion
Ref Expression
srgpcomp (𝜑 → ((𝐾 𝐵) × 𝐴) = (𝐴 × (𝐾 𝐵)))

Proof of Theorem srgpcomp
Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 srgpcomp.k . 2 (𝜑𝐾 ∈ ℕ0)
2 oveq1 7262 . . . . . 6 (𝑥 = 0 → (𝑥 𝐵) = (0 𝐵))
32oveq1d 7270 . . . . 5 (𝑥 = 0 → ((𝑥 𝐵) × 𝐴) = ((0 𝐵) × 𝐴))
42oveq2d 7271 . . . . 5 (𝑥 = 0 → (𝐴 × (𝑥 𝐵)) = (𝐴 × (0 𝐵)))
53, 4eqeq12d 2754 . . . 4 (𝑥 = 0 → (((𝑥 𝐵) × 𝐴) = (𝐴 × (𝑥 𝐵)) ↔ ((0 𝐵) × 𝐴) = (𝐴 × (0 𝐵))))
65imbi2d 340 . . 3 (𝑥 = 0 → ((𝜑 → ((𝑥 𝐵) × 𝐴) = (𝐴 × (𝑥 𝐵))) ↔ (𝜑 → ((0 𝐵) × 𝐴) = (𝐴 × (0 𝐵)))))
7 oveq1 7262 . . . . . 6 (𝑥 = 𝑦 → (𝑥 𝐵) = (𝑦 𝐵))
87oveq1d 7270 . . . . 5 (𝑥 = 𝑦 → ((𝑥 𝐵) × 𝐴) = ((𝑦 𝐵) × 𝐴))
97oveq2d 7271 . . . . 5 (𝑥 = 𝑦 → (𝐴 × (𝑥 𝐵)) = (𝐴 × (𝑦 𝐵)))
108, 9eqeq12d 2754 . . . 4 (𝑥 = 𝑦 → (((𝑥 𝐵) × 𝐴) = (𝐴 × (𝑥 𝐵)) ↔ ((𝑦 𝐵) × 𝐴) = (𝐴 × (𝑦 𝐵))))
1110imbi2d 340 . . 3 (𝑥 = 𝑦 → ((𝜑 → ((𝑥 𝐵) × 𝐴) = (𝐴 × (𝑥 𝐵))) ↔ (𝜑 → ((𝑦 𝐵) × 𝐴) = (𝐴 × (𝑦 𝐵)))))
12 oveq1 7262 . . . . . 6 (𝑥 = (𝑦 + 1) → (𝑥 𝐵) = ((𝑦 + 1) 𝐵))
1312oveq1d 7270 . . . . 5 (𝑥 = (𝑦 + 1) → ((𝑥 𝐵) × 𝐴) = (((𝑦 + 1) 𝐵) × 𝐴))
1412oveq2d 7271 . . . . 5 (𝑥 = (𝑦 + 1) → (𝐴 × (𝑥 𝐵)) = (𝐴 × ((𝑦 + 1) 𝐵)))
1513, 14eqeq12d 2754 . . . 4 (𝑥 = (𝑦 + 1) → (((𝑥 𝐵) × 𝐴) = (𝐴 × (𝑥 𝐵)) ↔ (((𝑦 + 1) 𝐵) × 𝐴) = (𝐴 × ((𝑦 + 1) 𝐵))))
1615imbi2d 340 . . 3 (𝑥 = (𝑦 + 1) → ((𝜑 → ((𝑥 𝐵) × 𝐴) = (𝐴 × (𝑥 𝐵))) ↔ (𝜑 → (((𝑦 + 1) 𝐵) × 𝐴) = (𝐴 × ((𝑦 + 1) 𝐵)))))
17 oveq1 7262 . . . . . 6 (𝑥 = 𝐾 → (𝑥 𝐵) = (𝐾 𝐵))
1817oveq1d 7270 . . . . 5 (𝑥 = 𝐾 → ((𝑥 𝐵) × 𝐴) = ((𝐾 𝐵) × 𝐴))
1917oveq2d 7271 . . . . 5 (𝑥 = 𝐾 → (𝐴 × (𝑥 𝐵)) = (𝐴 × (𝐾 𝐵)))
2018, 19eqeq12d 2754 . . . 4 (𝑥 = 𝐾 → (((𝑥 𝐵) × 𝐴) = (𝐴 × (𝑥 𝐵)) ↔ ((𝐾 𝐵) × 𝐴) = (𝐴 × (𝐾 𝐵))))
2120imbi2d 340 . . 3 (𝑥 = 𝐾 → ((𝜑 → ((𝑥 𝐵) × 𝐴) = (𝐴 × (𝑥 𝐵))) ↔ (𝜑 → ((𝐾 𝐵) × 𝐴) = (𝐴 × (𝐾 𝐵)))))
22 srgpcomp.b . . . . . 6 (𝜑𝐵𝑆)
23 srgpcomp.g . . . . . . . 8 𝐺 = (mulGrp‘𝑅)
24 srgpcomp.s . . . . . . . 8 𝑆 = (Base‘𝑅)
2523, 24mgpbas 19641 . . . . . . 7 𝑆 = (Base‘𝐺)
26 eqid 2738 . . . . . . . 8 (1r𝑅) = (1r𝑅)
2723, 26ringidval 19654 . . . . . . 7 (1r𝑅) = (0g𝐺)
28 srgpcomp.e . . . . . . 7 = (.g𝐺)
2925, 27, 28mulg0 18622 . . . . . 6 (𝐵𝑆 → (0 𝐵) = (1r𝑅))
3022, 29syl 17 . . . . 5 (𝜑 → (0 𝐵) = (1r𝑅))
3130oveq1d 7270 . . . 4 (𝜑 → ((0 𝐵) × 𝐴) = ((1r𝑅) × 𝐴))
32 srgpcomp.r . . . . . 6 (𝜑𝑅 ∈ SRing)
33 srgpcomp.a . . . . . 6 (𝜑𝐴𝑆)
34 srgpcomp.m . . . . . . 7 × = (.r𝑅)
3524, 34, 26srgridm 19673 . . . . . 6 ((𝑅 ∈ SRing ∧ 𝐴𝑆) → (𝐴 × (1r𝑅)) = 𝐴)
3632, 33, 35syl2anc 583 . . . . 5 (𝜑 → (𝐴 × (1r𝑅)) = 𝐴)
3730oveq2d 7271 . . . . 5 (𝜑 → (𝐴 × (0 𝐵)) = (𝐴 × (1r𝑅)))
3824, 34, 26srglidm 19672 . . . . . 6 ((𝑅 ∈ SRing ∧ 𝐴𝑆) → ((1r𝑅) × 𝐴) = 𝐴)
3932, 33, 38syl2anc 583 . . . . 5 (𝜑 → ((1r𝑅) × 𝐴) = 𝐴)
4036, 37, 393eqtr4rd 2789 . . . 4 (𝜑 → ((1r𝑅) × 𝐴) = (𝐴 × (0 𝐵)))
4131, 40eqtrd 2778 . . 3 (𝜑 → ((0 𝐵) × 𝐴) = (𝐴 × (0 𝐵)))
4223srgmgp 19661 . . . . . . . . . . . . 13 (𝑅 ∈ SRing → 𝐺 ∈ Mnd)
4332, 42syl 17 . . . . . . . . . . . 12 (𝜑𝐺 ∈ Mnd)
4443adantr 480 . . . . . . . . . . 11 ((𝜑𝑦 ∈ ℕ0) → 𝐺 ∈ Mnd)
45 simpr 484 . . . . . . . . . . 11 ((𝜑𝑦 ∈ ℕ0) → 𝑦 ∈ ℕ0)
4622adantr 480 . . . . . . . . . . 11 ((𝜑𝑦 ∈ ℕ0) → 𝐵𝑆)
4723, 34mgpplusg 19639 . . . . . . . . . . . 12 × = (+g𝐺)
4825, 28, 47mulgnn0p1 18630 . . . . . . . . . . 11 ((𝐺 ∈ Mnd ∧ 𝑦 ∈ ℕ0𝐵𝑆) → ((𝑦 + 1) 𝐵) = ((𝑦 𝐵) × 𝐵))
4944, 45, 46, 48syl3anc 1369 . . . . . . . . . 10 ((𝜑𝑦 ∈ ℕ0) → ((𝑦 + 1) 𝐵) = ((𝑦 𝐵) × 𝐵))
5049oveq1d 7270 . . . . . . . . 9 ((𝜑𝑦 ∈ ℕ0) → (((𝑦 + 1) 𝐵) × 𝐴) = (((𝑦 𝐵) × 𝐵) × 𝐴))
51 srgpcomp.c . . . . . . . . . . . . 13 (𝜑 → (𝐴 × 𝐵) = (𝐵 × 𝐴))
5251eqcomd 2744 . . . . . . . . . . . 12 (𝜑 → (𝐵 × 𝐴) = (𝐴 × 𝐵))
5352adantr 480 . . . . . . . . . . 11 ((𝜑𝑦 ∈ ℕ0) → (𝐵 × 𝐴) = (𝐴 × 𝐵))
5453oveq2d 7271 . . . . . . . . . 10 ((𝜑𝑦 ∈ ℕ0) → ((𝑦 𝐵) × (𝐵 × 𝐴)) = ((𝑦 𝐵) × (𝐴 × 𝐵)))
5532adantr 480 . . . . . . . . . . 11 ((𝜑𝑦 ∈ ℕ0) → 𝑅 ∈ SRing)
5625, 28mulgnn0cl 18635 . . . . . . . . . . . 12 ((𝐺 ∈ Mnd ∧ 𝑦 ∈ ℕ0𝐵𝑆) → (𝑦 𝐵) ∈ 𝑆)
5744, 45, 46, 56syl3anc 1369 . . . . . . . . . . 11 ((𝜑𝑦 ∈ ℕ0) → (𝑦 𝐵) ∈ 𝑆)
5833adantr 480 . . . . . . . . . . 11 ((𝜑𝑦 ∈ ℕ0) → 𝐴𝑆)
5924, 34srgass 19664 . . . . . . . . . . 11 ((𝑅 ∈ SRing ∧ ((𝑦 𝐵) ∈ 𝑆𝐵𝑆𝐴𝑆)) → (((𝑦 𝐵) × 𝐵) × 𝐴) = ((𝑦 𝐵) × (𝐵 × 𝐴)))
6055, 57, 46, 58, 59syl13anc 1370 . . . . . . . . . 10 ((𝜑𝑦 ∈ ℕ0) → (((𝑦 𝐵) × 𝐵) × 𝐴) = ((𝑦 𝐵) × (𝐵 × 𝐴)))
6124, 34srgass 19664 . . . . . . . . . . 11 ((𝑅 ∈ SRing ∧ ((𝑦 𝐵) ∈ 𝑆𝐴𝑆𝐵𝑆)) → (((𝑦 𝐵) × 𝐴) × 𝐵) = ((𝑦 𝐵) × (𝐴 × 𝐵)))
6255, 57, 58, 46, 61syl13anc 1370 . . . . . . . . . 10 ((𝜑𝑦 ∈ ℕ0) → (((𝑦 𝐵) × 𝐴) × 𝐵) = ((𝑦 𝐵) × (𝐴 × 𝐵)))
6354, 60, 623eqtr4d 2788 . . . . . . . . 9 ((𝜑𝑦 ∈ ℕ0) → (((𝑦 𝐵) × 𝐵) × 𝐴) = (((𝑦 𝐵) × 𝐴) × 𝐵))
6450, 63eqtrd 2778 . . . . . . . 8 ((𝜑𝑦 ∈ ℕ0) → (((𝑦 + 1) 𝐵) × 𝐴) = (((𝑦 𝐵) × 𝐴) × 𝐵))
6564adantr 480 . . . . . . 7 (((𝜑𝑦 ∈ ℕ0) ∧ ((𝑦 𝐵) × 𝐴) = (𝐴 × (𝑦 𝐵))) → (((𝑦 + 1) 𝐵) × 𝐴) = (((𝑦 𝐵) × 𝐴) × 𝐵))
66 oveq1 7262 . . . . . . . 8 (((𝑦 𝐵) × 𝐴) = (𝐴 × (𝑦 𝐵)) → (((𝑦 𝐵) × 𝐴) × 𝐵) = ((𝐴 × (𝑦 𝐵)) × 𝐵))
6724, 34srgass 19664 . . . . . . . . . 10 ((𝑅 ∈ SRing ∧ (𝐴𝑆 ∧ (𝑦 𝐵) ∈ 𝑆𝐵𝑆)) → ((𝐴 × (𝑦 𝐵)) × 𝐵) = (𝐴 × ((𝑦 𝐵) × 𝐵)))
6855, 58, 57, 46, 67syl13anc 1370 . . . . . . . . 9 ((𝜑𝑦 ∈ ℕ0) → ((𝐴 × (𝑦 𝐵)) × 𝐵) = (𝐴 × ((𝑦 𝐵) × 𝐵)))
6949eqcomd 2744 . . . . . . . . . 10 ((𝜑𝑦 ∈ ℕ0) → ((𝑦 𝐵) × 𝐵) = ((𝑦 + 1) 𝐵))
7069oveq2d 7271 . . . . . . . . 9 ((𝜑𝑦 ∈ ℕ0) → (𝐴 × ((𝑦 𝐵) × 𝐵)) = (𝐴 × ((𝑦 + 1) 𝐵)))
7168, 70eqtrd 2778 . . . . . . . 8 ((𝜑𝑦 ∈ ℕ0) → ((𝐴 × (𝑦 𝐵)) × 𝐵) = (𝐴 × ((𝑦 + 1) 𝐵)))
7266, 71sylan9eqr 2801 . . . . . . 7 (((𝜑𝑦 ∈ ℕ0) ∧ ((𝑦 𝐵) × 𝐴) = (𝐴 × (𝑦 𝐵))) → (((𝑦 𝐵) × 𝐴) × 𝐵) = (𝐴 × ((𝑦 + 1) 𝐵)))
7365, 72eqtrd 2778 . . . . . 6 (((𝜑𝑦 ∈ ℕ0) ∧ ((𝑦 𝐵) × 𝐴) = (𝐴 × (𝑦 𝐵))) → (((𝑦 + 1) 𝐵) × 𝐴) = (𝐴 × ((𝑦 + 1) 𝐵)))
7473ex 412 . . . . 5 ((𝜑𝑦 ∈ ℕ0) → (((𝑦 𝐵) × 𝐴) = (𝐴 × (𝑦 𝐵)) → (((𝑦 + 1) 𝐵) × 𝐴) = (𝐴 × ((𝑦 + 1) 𝐵))))
7574expcom 413 . . . 4 (𝑦 ∈ ℕ0 → (𝜑 → (((𝑦 𝐵) × 𝐴) = (𝐴 × (𝑦 𝐵)) → (((𝑦 + 1) 𝐵) × 𝐴) = (𝐴 × ((𝑦 + 1) 𝐵)))))
7675a2d 29 . . 3 (𝑦 ∈ ℕ0 → ((𝜑 → ((𝑦 𝐵) × 𝐴) = (𝐴 × (𝑦 𝐵))) → (𝜑 → (((𝑦 + 1) 𝐵) × 𝐴) = (𝐴 × ((𝑦 + 1) 𝐵)))))
776, 11, 16, 21, 41, 76nn0ind 12345 . 2 (𝐾 ∈ ℕ0 → (𝜑 → ((𝐾 𝐵) × 𝐴) = (𝐴 × (𝐾 𝐵))))
781, 77mpcom 38 1 (𝜑 → ((𝐾 𝐵) × 𝐴) = (𝐴 × (𝐾 𝐵)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395   = wceq 1539  wcel 2108  cfv 6418  (class class class)co 7255  0cc0 10802  1c1 10803   + caddc 10805  0cn0 12163  Basecbs 16840  .rcmulr 16889  Mndcmnd 18300  .gcmg 18615  mulGrpcmgp 19635  1rcur 19652  SRingcsrg 19656
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-9 2118  ax-10 2139  ax-11 2156  ax-12 2173  ax-ext 2709  ax-sep 5218  ax-nul 5225  ax-pow 5283  ax-pr 5347  ax-un 7566  ax-cnex 10858  ax-resscn 10859  ax-1cn 10860  ax-icn 10861  ax-addcl 10862  ax-addrcl 10863  ax-mulcl 10864  ax-mulrcl 10865  ax-mulcom 10866  ax-addass 10867  ax-mulass 10868  ax-distr 10869  ax-i2m1 10870  ax-1ne0 10871  ax-1rid 10872  ax-rnegex 10873  ax-rrecex 10874  ax-cnre 10875  ax-pre-lttri 10876  ax-pre-lttrn 10877  ax-pre-ltadd 10878  ax-pre-mulgt0 10879
This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3or 1086  df-3an 1087  df-tru 1542  df-fal 1552  df-ex 1784  df-nf 1788  df-sb 2069  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2817  df-nfc 2888  df-ne 2943  df-nel 3049  df-ral 3068  df-rex 3069  df-reu 3070  df-rmo 3071  df-rab 3072  df-v 3424  df-sbc 3712  df-csb 3829  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-pss 3902  df-nul 4254  df-if 4457  df-pw 4532  df-sn 4559  df-pr 4561  df-tp 4563  df-op 4565  df-uni 4837  df-iun 4923  df-br 5071  df-opab 5133  df-mpt 5154  df-tr 5188  df-id 5480  df-eprel 5486  df-po 5494  df-so 5495  df-fr 5535  df-we 5537  df-xp 5586  df-rel 5587  df-cnv 5588  df-co 5589  df-dm 5590  df-rn 5591  df-res 5592  df-ima 5593  df-pred 6191  df-ord 6254  df-on 6255  df-lim 6256  df-suc 6257  df-iota 6376  df-fun 6420  df-fn 6421  df-f 6422  df-f1 6423  df-fo 6424  df-f1o 6425  df-fv 6426  df-riota 7212  df-ov 7258  df-oprab 7259  df-mpo 7260  df-om 7688  df-1st 7804  df-2nd 7805  df-frecs 8068  df-wrecs 8099  df-recs 8173  df-rdg 8212  df-er 8456  df-en 8692  df-dom 8693  df-sdom 8694  df-pnf 10942  df-mnf 10943  df-xr 10944  df-ltxr 10945  df-le 10946  df-sub 11137  df-neg 11138  df-nn 11904  df-2 11966  df-n0 12164  df-z 12250  df-uz 12512  df-fz 13169  df-seq 13650  df-sets 16793  df-slot 16811  df-ndx 16823  df-base 16841  df-plusg 16901  df-0g 17069  df-mgm 18241  df-sgrp 18290  df-mnd 18301  df-mulg 18616  df-mgp 19636  df-ur 19653  df-srg 19657
This theorem is referenced by:  srgpcompp  19684  mplcoe5lem  21150
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