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Theorem mulgpropd 17353
Description: Two structures with the same group-nature have the same group multiple function. 𝐾 is expected to either be V (when strong equality is available) or 𝐵 (when closure is available). (Contributed by Stefan O'Rear, 21-Mar-2015.) (Revised by Mario Carneiro, 2-Oct-2015.)
Hypotheses
Ref Expression
mulgpropd.m · = (.g𝐺)
mulgpropd.n × = (.g𝐻)
mulgpropd.b1 (𝜑𝐵 = (Base‘𝐺))
mulgpropd.b2 (𝜑𝐵 = (Base‘𝐻))
mulgpropd.i (𝜑𝐵𝐾)
mulgpropd.k ((𝜑 ∧ (𝑥𝐾𝑦𝐾)) → (𝑥(+g𝐺)𝑦) ∈ 𝐾)
mulgpropd.e ((𝜑 ∧ (𝑥𝐾𝑦𝐾)) → (𝑥(+g𝐺)𝑦) = (𝑥(+g𝐻)𝑦))
Assertion
Ref Expression
mulgpropd (𝜑· = × )
Distinct variable groups:   𝜑,𝑥,𝑦   𝑥,𝐵,𝑦   𝑥,𝐺,𝑦   𝑥,𝐻,𝑦   𝑥,𝐾,𝑦
Allowed substitution hints:   · (𝑥,𝑦)   × (𝑥,𝑦)

Proof of Theorem mulgpropd
Dummy variables 𝑎 𝑏 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 mulgpropd.b1 . . . . . . 7 (𝜑𝐵 = (Base‘𝐺))
2 mulgpropd.b2 . . . . . . 7 (𝜑𝐵 = (Base‘𝐻))
3 mulgpropd.i . . . . . . . . . 10 (𝜑𝐵𝐾)
4 ssel 3561 . . . . . . . . . . 11 (𝐵𝐾 → (𝑥𝐵𝑥𝐾))
5 ssel 3561 . . . . . . . . . . 11 (𝐵𝐾 → (𝑦𝐵𝑦𝐾))
64, 5anim12d 583 . . . . . . . . . 10 (𝐵𝐾 → ((𝑥𝐵𝑦𝐵) → (𝑥𝐾𝑦𝐾)))
73, 6syl 17 . . . . . . . . 9 (𝜑 → ((𝑥𝐵𝑦𝐵) → (𝑥𝐾𝑦𝐾)))
87imp 443 . . . . . . . 8 ((𝜑 ∧ (𝑥𝐵𝑦𝐵)) → (𝑥𝐾𝑦𝐾))
9 mulgpropd.e . . . . . . . 8 ((𝜑 ∧ (𝑥𝐾𝑦𝐾)) → (𝑥(+g𝐺)𝑦) = (𝑥(+g𝐻)𝑦))
108, 9syldan 485 . . . . . . 7 ((𝜑 ∧ (𝑥𝐵𝑦𝐵)) → (𝑥(+g𝐺)𝑦) = (𝑥(+g𝐻)𝑦))
111, 2, 10grpidpropd 17030 . . . . . 6 (𝜑 → (0g𝐺) = (0g𝐻))
12113ad2ant1 1074 . . . . 5 ((𝜑𝑎 ∈ ℤ ∧ 𝑏𝐵) → (0g𝐺) = (0g𝐻))
13 1zzd 11241 . . . . . . . 8 ((𝜑𝑎 ∈ ℤ ∧ 𝑏𝐵) → 1 ∈ ℤ)
14 vex 3175 . . . . . . . . . . . 12 𝑏 ∈ V
1514fvconst2 6352 . . . . . . . . . . 11 (𝑥 ∈ ℕ → ((ℕ × {𝑏})‘𝑥) = 𝑏)
16 nnuz 11555 . . . . . . . . . . . 12 ℕ = (ℤ‘1)
1716eqcomi 2618 . . . . . . . . . . 11 (ℤ‘1) = ℕ
1815, 17eleq2s 2705 . . . . . . . . . 10 (𝑥 ∈ (ℤ‘1) → ((ℕ × {𝑏})‘𝑥) = 𝑏)
1918adantl 480 . . . . . . . . 9 (((𝜑𝑎 ∈ ℤ ∧ 𝑏𝐵) ∧ 𝑥 ∈ (ℤ‘1)) → ((ℕ × {𝑏})‘𝑥) = 𝑏)
2033ad2ant1 1074 . . . . . . . . . . 11 ((𝜑𝑎 ∈ ℤ ∧ 𝑏𝐵) → 𝐵𝐾)
21 simp3 1055 . . . . . . . . . . 11 ((𝜑𝑎 ∈ ℤ ∧ 𝑏𝐵) → 𝑏𝐵)
2220, 21sseldd 3568 . . . . . . . . . 10 ((𝜑𝑎 ∈ ℤ ∧ 𝑏𝐵) → 𝑏𝐾)
2322adantr 479 . . . . . . . . 9 (((𝜑𝑎 ∈ ℤ ∧ 𝑏𝐵) ∧ 𝑥 ∈ (ℤ‘1)) → 𝑏𝐾)
2419, 23eqeltrd 2687 . . . . . . . 8 (((𝜑𝑎 ∈ ℤ ∧ 𝑏𝐵) ∧ 𝑥 ∈ (ℤ‘1)) → ((ℕ × {𝑏})‘𝑥) ∈ 𝐾)
25 mulgpropd.k . . . . . . . . 9 ((𝜑 ∧ (𝑥𝐾𝑦𝐾)) → (𝑥(+g𝐺)𝑦) ∈ 𝐾)
26253ad2antl1 1215 . . . . . . . 8 (((𝜑𝑎 ∈ ℤ ∧ 𝑏𝐵) ∧ (𝑥𝐾𝑦𝐾)) → (𝑥(+g𝐺)𝑦) ∈ 𝐾)
2793ad2antl1 1215 . . . . . . . 8 (((𝜑𝑎 ∈ ℤ ∧ 𝑏𝐵) ∧ (𝑥𝐾𝑦𝐾)) → (𝑥(+g𝐺)𝑦) = (𝑥(+g𝐻)𝑦))
2813, 24, 26, 27seqfeq3 12668 . . . . . . 7 ((𝜑𝑎 ∈ ℤ ∧ 𝑏𝐵) → seq1((+g𝐺), (ℕ × {𝑏})) = seq1((+g𝐻), (ℕ × {𝑏})))
2928fveq1d 6090 . . . . . 6 ((𝜑𝑎 ∈ ℤ ∧ 𝑏𝐵) → (seq1((+g𝐺), (ℕ × {𝑏}))‘𝑎) = (seq1((+g𝐻), (ℕ × {𝑏}))‘𝑎))
301, 2, 10grpinvpropd 17259 . . . . . . . 8 (𝜑 → (invg𝐺) = (invg𝐻))
31303ad2ant1 1074 . . . . . . 7 ((𝜑𝑎 ∈ ℤ ∧ 𝑏𝐵) → (invg𝐺) = (invg𝐻))
3228fveq1d 6090 . . . . . . 7 ((𝜑𝑎 ∈ ℤ ∧ 𝑏𝐵) → (seq1((+g𝐺), (ℕ × {𝑏}))‘-𝑎) = (seq1((+g𝐻), (ℕ × {𝑏}))‘-𝑎))
3331, 32fveq12d 6094 . . . . . 6 ((𝜑𝑎 ∈ ℤ ∧ 𝑏𝐵) → ((invg𝐺)‘(seq1((+g𝐺), (ℕ × {𝑏}))‘-𝑎)) = ((invg𝐻)‘(seq1((+g𝐻), (ℕ × {𝑏}))‘-𝑎)))
3429, 33ifeq12d 4055 . . . . 5 ((𝜑𝑎 ∈ ℤ ∧ 𝑏𝐵) → if(0 < 𝑎, (seq1((+g𝐺), (ℕ × {𝑏}))‘𝑎), ((invg𝐺)‘(seq1((+g𝐺), (ℕ × {𝑏}))‘-𝑎))) = if(0 < 𝑎, (seq1((+g𝐻), (ℕ × {𝑏}))‘𝑎), ((invg𝐻)‘(seq1((+g𝐻), (ℕ × {𝑏}))‘-𝑎))))
3512, 34ifeq12d 4055 . . . 4 ((𝜑𝑎 ∈ ℤ ∧ 𝑏𝐵) → if(𝑎 = 0, (0g𝐺), if(0 < 𝑎, (seq1((+g𝐺), (ℕ × {𝑏}))‘𝑎), ((invg𝐺)‘(seq1((+g𝐺), (ℕ × {𝑏}))‘-𝑎)))) = if(𝑎 = 0, (0g𝐻), if(0 < 𝑎, (seq1((+g𝐻), (ℕ × {𝑏}))‘𝑎), ((invg𝐻)‘(seq1((+g𝐻), (ℕ × {𝑏}))‘-𝑎)))))
3635mpt2eq3dva 6595 . . 3 (𝜑 → (𝑎 ∈ ℤ, 𝑏𝐵 ↦ if(𝑎 = 0, (0g𝐺), if(0 < 𝑎, (seq1((+g𝐺), (ℕ × {𝑏}))‘𝑎), ((invg𝐺)‘(seq1((+g𝐺), (ℕ × {𝑏}))‘-𝑎))))) = (𝑎 ∈ ℤ, 𝑏𝐵 ↦ if(𝑎 = 0, (0g𝐻), if(0 < 𝑎, (seq1((+g𝐻), (ℕ × {𝑏}))‘𝑎), ((invg𝐻)‘(seq1((+g𝐻), (ℕ × {𝑏}))‘-𝑎))))))
37 eqidd 2610 . . . 4 (𝜑 → ℤ = ℤ)
38 eqidd 2610 . . . 4 (𝜑 → if(𝑎 = 0, (0g𝐺), if(0 < 𝑎, (seq1((+g𝐺), (ℕ × {𝑏}))‘𝑎), ((invg𝐺)‘(seq1((+g𝐺), (ℕ × {𝑏}))‘-𝑎)))) = if(𝑎 = 0, (0g𝐺), if(0 < 𝑎, (seq1((+g𝐺), (ℕ × {𝑏}))‘𝑎), ((invg𝐺)‘(seq1((+g𝐺), (ℕ × {𝑏}))‘-𝑎)))))
3937, 1, 38mpt2eq123dv 6593 . . 3 (𝜑 → (𝑎 ∈ ℤ, 𝑏𝐵 ↦ if(𝑎 = 0, (0g𝐺), if(0 < 𝑎, (seq1((+g𝐺), (ℕ × {𝑏}))‘𝑎), ((invg𝐺)‘(seq1((+g𝐺), (ℕ × {𝑏}))‘-𝑎))))) = (𝑎 ∈ ℤ, 𝑏 ∈ (Base‘𝐺) ↦ if(𝑎 = 0, (0g𝐺), if(0 < 𝑎, (seq1((+g𝐺), (ℕ × {𝑏}))‘𝑎), ((invg𝐺)‘(seq1((+g𝐺), (ℕ × {𝑏}))‘-𝑎))))))
40 eqidd 2610 . . . 4 (𝜑 → if(𝑎 = 0, (0g𝐻), if(0 < 𝑎, (seq1((+g𝐻), (ℕ × {𝑏}))‘𝑎), ((invg𝐻)‘(seq1((+g𝐻), (ℕ × {𝑏}))‘-𝑎)))) = if(𝑎 = 0, (0g𝐻), if(0 < 𝑎, (seq1((+g𝐻), (ℕ × {𝑏}))‘𝑎), ((invg𝐻)‘(seq1((+g𝐻), (ℕ × {𝑏}))‘-𝑎)))))
4137, 2, 40mpt2eq123dv 6593 . . 3 (𝜑 → (𝑎 ∈ ℤ, 𝑏𝐵 ↦ if(𝑎 = 0, (0g𝐻), if(0 < 𝑎, (seq1((+g𝐻), (ℕ × {𝑏}))‘𝑎), ((invg𝐻)‘(seq1((+g𝐻), (ℕ × {𝑏}))‘-𝑎))))) = (𝑎 ∈ ℤ, 𝑏 ∈ (Base‘𝐻) ↦ if(𝑎 = 0, (0g𝐻), if(0 < 𝑎, (seq1((+g𝐻), (ℕ × {𝑏}))‘𝑎), ((invg𝐻)‘(seq1((+g𝐻), (ℕ × {𝑏}))‘-𝑎))))))
4236, 39, 413eqtr3d 2651 . 2 (𝜑 → (𝑎 ∈ ℤ, 𝑏 ∈ (Base‘𝐺) ↦ if(𝑎 = 0, (0g𝐺), if(0 < 𝑎, (seq1((+g𝐺), (ℕ × {𝑏}))‘𝑎), ((invg𝐺)‘(seq1((+g𝐺), (ℕ × {𝑏}))‘-𝑎))))) = (𝑎 ∈ ℤ, 𝑏 ∈ (Base‘𝐻) ↦ if(𝑎 = 0, (0g𝐻), if(0 < 𝑎, (seq1((+g𝐻), (ℕ × {𝑏}))‘𝑎), ((invg𝐻)‘(seq1((+g𝐻), (ℕ × {𝑏}))‘-𝑎))))))
43 eqid 2609 . . 3 (Base‘𝐺) = (Base‘𝐺)
44 eqid 2609 . . 3 (+g𝐺) = (+g𝐺)
45 eqid 2609 . . 3 (0g𝐺) = (0g𝐺)
46 eqid 2609 . . 3 (invg𝐺) = (invg𝐺)
47 mulgpropd.m . . 3 · = (.g𝐺)
4843, 44, 45, 46, 47mulgfval 17311 . 2 · = (𝑎 ∈ ℤ, 𝑏 ∈ (Base‘𝐺) ↦ if(𝑎 = 0, (0g𝐺), if(0 < 𝑎, (seq1((+g𝐺), (ℕ × {𝑏}))‘𝑎), ((invg𝐺)‘(seq1((+g𝐺), (ℕ × {𝑏}))‘-𝑎)))))
49 eqid 2609 . . 3 (Base‘𝐻) = (Base‘𝐻)
50 eqid 2609 . . 3 (+g𝐻) = (+g𝐻)
51 eqid 2609 . . 3 (0g𝐻) = (0g𝐻)
52 eqid 2609 . . 3 (invg𝐻) = (invg𝐻)
53 mulgpropd.n . . 3 × = (.g𝐻)
5449, 50, 51, 52, 53mulgfval 17311 . 2 × = (𝑎 ∈ ℤ, 𝑏 ∈ (Base‘𝐻) ↦ if(𝑎 = 0, (0g𝐻), if(0 < 𝑎, (seq1((+g𝐻), (ℕ × {𝑏}))‘𝑎), ((invg𝐻)‘(seq1((+g𝐻), (ℕ × {𝑏}))‘-𝑎)))))
5542, 48, 543eqtr4g 2668 1 (𝜑· = × )
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 382  w3a 1030   = wceq 1474  wcel 1976  wss 3539  ifcif 4035  {csn 4124   class class class wbr 4577   × cxp 5026  cfv 5790  (class class class)co 6527  cmpt2 6529  0cc0 9792  1c1 9793   < clt 9930  -cneg 10118  cn 10867  cz 11210  cuz 11519  seqcseq 12618  Basecbs 15641  +gcplusg 15714  0gc0g 15869  invgcminusg 17192  .gcmg 17309
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1712  ax-4 1727  ax-5 1826  ax-6 1874  ax-7 1921  ax-8 1978  ax-9 1985  ax-10 2005  ax-11 2020  ax-12 2032  ax-13 2232  ax-ext 2589  ax-rep 4693  ax-sep 4703  ax-nul 4712  ax-pow 4764  ax-pr 4828  ax-un 6824  ax-inf2 8398  ax-cnex 9848  ax-resscn 9849  ax-1cn 9850  ax-icn 9851  ax-addcl 9852  ax-addrcl 9853  ax-mulcl 9854  ax-mulrcl 9855  ax-mulcom 9856  ax-addass 9857  ax-mulass 9858  ax-distr 9859  ax-i2m1 9860  ax-1ne0 9861  ax-1rid 9862  ax-rnegex 9863  ax-rrecex 9864  ax-cnre 9865  ax-pre-lttri 9866  ax-pre-lttrn 9867  ax-pre-ltadd 9868  ax-pre-mulgt0 9869
This theorem depends on definitions:  df-bi 195  df-or 383  df-an 384  df-3or 1031  df-3an 1032  df-tru 1477  df-ex 1695  df-nf 1700  df-sb 1867  df-eu 2461  df-mo 2462  df-clab 2596  df-cleq 2602  df-clel 2605  df-nfc 2739  df-ne 2781  df-nel 2782  df-ral 2900  df-rex 2901  df-reu 2902  df-rab 2904  df-v 3174  df-sbc 3402  df-csb 3499  df-dif 3542  df-un 3544  df-in 3546  df-ss 3553  df-pss 3555  df-nul 3874  df-if 4036  df-pw 4109  df-sn 4125  df-pr 4127  df-tp 4129  df-op 4131  df-uni 4367  df-iun 4451  df-br 4578  df-opab 4638  df-mpt 4639  df-tr 4675  df-eprel 4939  df-id 4943  df-po 4949  df-so 4950  df-fr 4987  df-we 4989  df-xp 5034  df-rel 5035  df-cnv 5036  df-co 5037  df-dm 5038  df-rn 5039  df-res 5040  df-ima 5041  df-pred 5583  df-ord 5629  df-on 5630  df-lim 5631  df-suc 5632  df-iota 5754  df-fun 5792  df-fn 5793  df-f 5794  df-f1 5795  df-fo 5796  df-f1o 5797  df-fv 5798  df-riota 6489  df-ov 6530  df-oprab 6531  df-mpt2 6532  df-om 6935  df-1st 7036  df-2nd 7037  df-wrecs 7271  df-recs 7332  df-rdg 7370  df-er 7606  df-en 7819  df-dom 7820  df-sdom 7821  df-pnf 9932  df-mnf 9933  df-xr 9934  df-ltxr 9935  df-le 9936  df-sub 10119  df-neg 10120  df-nn 10868  df-n0 11140  df-z 11211  df-uz 11520  df-fz 12153  df-seq 12619  df-0g 15871  df-minusg 17195  df-mulg 17310
This theorem is referenced by:  mulgass3  18406  coe1tm  19410  ply1coe  19433  evl1expd  19476
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