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Theorem frlmip 20985
Description: The inner product of a free module. (Contributed by Thierry Arnoux, 20-Jun-2019.)
Hypotheses
Ref Expression
frlmphl.y 𝑌 = (𝑅 freeLMod 𝐼)
frlmphl.b 𝐵 = (Base‘𝑅)
frlmphl.t · = (.r𝑅)
Assertion
Ref Expression
frlmip ((𝐼𝑊𝑅𝑉) → (𝑓 ∈ (𝐵m 𝐼), 𝑔 ∈ (𝐵m 𝐼) ↦ (𝑅 Σg (𝑥𝐼 ↦ ((𝑓𝑥) · (𝑔𝑥))))) = (·𝑖𝑌))
Distinct variable groups:   𝐵,𝑓,𝑔,𝑥   𝑓,𝐼,𝑔,𝑥   𝑅,𝑓,𝑔,𝑥   𝑓,𝑉,𝑔,𝑥   𝑓,𝑊,𝑔,𝑥
Allowed substitution hints:   · (𝑥,𝑓,𝑔)   𝑌(𝑥,𝑓,𝑔)

Proof of Theorem frlmip
StepHypRef Expression
1 frlmphl.y . . . 4 𝑌 = (𝑅 freeLMod 𝐼)
2 eqid 2738 . . . . . . 7 (𝑅 freeLMod 𝐼) = (𝑅 freeLMod 𝐼)
3 eqid 2738 . . . . . . 7 (Base‘(𝑅 freeLMod 𝐼)) = (Base‘(𝑅 freeLMod 𝐼))
42, 3frlmpws 20957 . . . . . 6 ((𝑅𝑉𝐼𝑊) → (𝑅 freeLMod 𝐼) = (((ringLMod‘𝑅) ↑s 𝐼) ↾s (Base‘(𝑅 freeLMod 𝐼))))
54ancoms 459 . . . . 5 ((𝐼𝑊𝑅𝑉) → (𝑅 freeLMod 𝐼) = (((ringLMod‘𝑅) ↑s 𝐼) ↾s (Base‘(𝑅 freeLMod 𝐼))))
6 frlmphl.b . . . . . . . . . . 11 𝐵 = (Base‘𝑅)
76ressid 16954 . . . . . . . . . 10 (𝑅𝑉 → (𝑅s 𝐵) = 𝑅)
8 eqidd 2739 . . . . . . . . . . 11 (𝑅𝑉 → ((subringAlg ‘𝑅)‘𝐵) = ((subringAlg ‘𝑅)‘𝐵))
96eqimssi 3979 . . . . . . . . . . . 12 𝐵 ⊆ (Base‘𝑅)
109a1i 11 . . . . . . . . . . 11 (𝑅𝑉𝐵 ⊆ (Base‘𝑅))
118, 10srasca 20447 . . . . . . . . . 10 (𝑅𝑉 → (𝑅s 𝐵) = (Scalar‘((subringAlg ‘𝑅)‘𝐵)))
127, 11eqtr3d 2780 . . . . . . . . 9 (𝑅𝑉𝑅 = (Scalar‘((subringAlg ‘𝑅)‘𝐵)))
1312oveq1d 7290 . . . . . . . 8 (𝑅𝑉 → (𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)})) = ((Scalar‘((subringAlg ‘𝑅)‘𝐵))Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)})))
1413adantl 482 . . . . . . 7 ((𝐼𝑊𝑅𝑉) → (𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)})) = ((Scalar‘((subringAlg ‘𝑅)‘𝐵))Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)})))
15 fvex 6787 . . . . . . . . 9 ((subringAlg ‘𝑅)‘𝐵) ∈ V
16 rlmval 20461 . . . . . . . . . . . 12 (ringLMod‘𝑅) = ((subringAlg ‘𝑅)‘(Base‘𝑅))
176fveq2i 6777 . . . . . . . . . . . 12 ((subringAlg ‘𝑅)‘𝐵) = ((subringAlg ‘𝑅)‘(Base‘𝑅))
1816, 17eqtr4i 2769 . . . . . . . . . . 11 (ringLMod‘𝑅) = ((subringAlg ‘𝑅)‘𝐵)
1918oveq1i 7285 . . . . . . . . . 10 ((ringLMod‘𝑅) ↑s 𝐼) = (((subringAlg ‘𝑅)‘𝐵) ↑s 𝐼)
20 eqid 2738 . . . . . . . . . 10 (Scalar‘((subringAlg ‘𝑅)‘𝐵)) = (Scalar‘((subringAlg ‘𝑅)‘𝐵))
2119, 20pwsval 17197 . . . . . . . . 9 ((((subringAlg ‘𝑅)‘𝐵) ∈ V ∧ 𝐼𝑊) → ((ringLMod‘𝑅) ↑s 𝐼) = ((Scalar‘((subringAlg ‘𝑅)‘𝐵))Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)})))
2215, 21mpan 687 . . . . . . . 8 (𝐼𝑊 → ((ringLMod‘𝑅) ↑s 𝐼) = ((Scalar‘((subringAlg ‘𝑅)‘𝐵))Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)})))
2322adantr 481 . . . . . . 7 ((𝐼𝑊𝑅𝑉) → ((ringLMod‘𝑅) ↑s 𝐼) = ((Scalar‘((subringAlg ‘𝑅)‘𝐵))Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)})))
2414, 23eqtr4d 2781 . . . . . 6 ((𝐼𝑊𝑅𝑉) → (𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)})) = ((ringLMod‘𝑅) ↑s 𝐼))
251fveq2i 6777 . . . . . . 7 (Base‘𝑌) = (Base‘(𝑅 freeLMod 𝐼))
2625a1i 11 . . . . . 6 ((𝐼𝑊𝑅𝑉) → (Base‘𝑌) = (Base‘(𝑅 freeLMod 𝐼)))
2724, 26oveq12d 7293 . . . . 5 ((𝐼𝑊𝑅𝑉) → ((𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)})) ↾s (Base‘𝑌)) = (((ringLMod‘𝑅) ↑s 𝐼) ↾s (Base‘(𝑅 freeLMod 𝐼))))
285, 27eqtr4d 2781 . . . 4 ((𝐼𝑊𝑅𝑉) → (𝑅 freeLMod 𝐼) = ((𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)})) ↾s (Base‘𝑌)))
291, 28eqtrid 2790 . . 3 ((𝐼𝑊𝑅𝑉) → 𝑌 = ((𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)})) ↾s (Base‘𝑌)))
3029fveq2d 6778 . 2 ((𝐼𝑊𝑅𝑉) → (·𝑖𝑌) = (·𝑖‘((𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)})) ↾s (Base‘𝑌))))
31 fvex 6787 . . . 4 (Base‘𝑌) ∈ V
32 eqid 2738 . . . . 5 ((𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)})) ↾s (Base‘𝑌)) = ((𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)})) ↾s (Base‘𝑌))
33 eqid 2738 . . . . 5 (·𝑖‘(𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)}))) = (·𝑖‘(𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)})))
3432, 33ressip 17055 . . . 4 ((Base‘𝑌) ∈ V → (·𝑖‘(𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)}))) = (·𝑖‘((𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)})) ↾s (Base‘𝑌))))
3531, 34ax-mp 5 . . 3 (·𝑖‘(𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)}))) = (·𝑖‘((𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)})) ↾s (Base‘𝑌)))
36 eqid 2738 . . . . 5 (𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)})) = (𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)}))
37 simpr 485 . . . . 5 ((𝐼𝑊𝑅𝑉) → 𝑅𝑉)
38 snex 5354 . . . . . . 7 {((subringAlg ‘𝑅)‘𝐵)} ∈ V
39 xpexg 7600 . . . . . . 7 ((𝐼𝑊 ∧ {((subringAlg ‘𝑅)‘𝐵)} ∈ V) → (𝐼 × {((subringAlg ‘𝑅)‘𝐵)}) ∈ V)
4038, 39mpan2 688 . . . . . 6 (𝐼𝑊 → (𝐼 × {((subringAlg ‘𝑅)‘𝐵)}) ∈ V)
4140adantr 481 . . . . 5 ((𝐼𝑊𝑅𝑉) → (𝐼 × {((subringAlg ‘𝑅)‘𝐵)}) ∈ V)
42 eqid 2738 . . . . 5 (Base‘(𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)}))) = (Base‘(𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)})))
4315snnz 4712 . . . . . 6 {((subringAlg ‘𝑅)‘𝐵)} ≠ ∅
44 dmxp 5838 . . . . . 6 ({((subringAlg ‘𝑅)‘𝐵)} ≠ ∅ → dom (𝐼 × {((subringAlg ‘𝑅)‘𝐵)}) = 𝐼)
4543, 44mp1i 13 . . . . 5 ((𝐼𝑊𝑅𝑉) → dom (𝐼 × {((subringAlg ‘𝑅)‘𝐵)}) = 𝐼)
4636, 37, 41, 42, 45, 33prdsip 17172 . . . 4 ((𝐼𝑊𝑅𝑉) → (·𝑖‘(𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)}))) = (𝑓 ∈ (Base‘(𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)}))), 𝑔 ∈ (Base‘(𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)}))) ↦ (𝑅 Σg (𝑥𝐼 ↦ ((𝑓𝑥)(·𝑖‘((𝐼 × {((subringAlg ‘𝑅)‘𝐵)})‘𝑥))(𝑔𝑥))))))
4736, 37, 41, 42, 45prdsbas 17168 . . . . . 6 ((𝐼𝑊𝑅𝑉) → (Base‘(𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)}))) = X𝑥𝐼 (Base‘((𝐼 × {((subringAlg ‘𝑅)‘𝐵)})‘𝑥)))
48 eqidd 2739 . . . . . . . . . 10 (𝑥𝐼 → ((subringAlg ‘𝑅)‘𝐵) = ((subringAlg ‘𝑅)‘𝐵))
499a1i 11 . . . . . . . . . 10 (𝑥𝐼𝐵 ⊆ (Base‘𝑅))
5048, 49srabase 20441 . . . . . . . . 9 (𝑥𝐼 → (Base‘𝑅) = (Base‘((subringAlg ‘𝑅)‘𝐵)))
516a1i 11 . . . . . . . . 9 (𝑥𝐼𝐵 = (Base‘𝑅))
5215fvconst2 7079 . . . . . . . . . 10 (𝑥𝐼 → ((𝐼 × {((subringAlg ‘𝑅)‘𝐵)})‘𝑥) = ((subringAlg ‘𝑅)‘𝐵))
5352fveq2d 6778 . . . . . . . . 9 (𝑥𝐼 → (Base‘((𝐼 × {((subringAlg ‘𝑅)‘𝐵)})‘𝑥)) = (Base‘((subringAlg ‘𝑅)‘𝐵)))
5450, 51, 533eqtr4rd 2789 . . . . . . . 8 (𝑥𝐼 → (Base‘((𝐼 × {((subringAlg ‘𝑅)‘𝐵)})‘𝑥)) = 𝐵)
5554adantl 482 . . . . . . 7 (((𝐼𝑊𝑅𝑉) ∧ 𝑥𝐼) → (Base‘((𝐼 × {((subringAlg ‘𝑅)‘𝐵)})‘𝑥)) = 𝐵)
5655ixpeq2dva 8700 . . . . . 6 ((𝐼𝑊𝑅𝑉) → X𝑥𝐼 (Base‘((𝐼 × {((subringAlg ‘𝑅)‘𝐵)})‘𝑥)) = X𝑥𝐼 𝐵)
576fvexi 6788 . . . . . . . 8 𝐵 ∈ V
58 ixpconstg 8694 . . . . . . . 8 ((𝐼𝑊𝐵 ∈ V) → X𝑥𝐼 𝐵 = (𝐵m 𝐼))
5957, 58mpan2 688 . . . . . . 7 (𝐼𝑊X𝑥𝐼 𝐵 = (𝐵m 𝐼))
6059adantr 481 . . . . . 6 ((𝐼𝑊𝑅𝑉) → X𝑥𝐼 𝐵 = (𝐵m 𝐼))
6147, 56, 603eqtrd 2782 . . . . 5 ((𝐼𝑊𝑅𝑉) → (Base‘(𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)}))) = (𝐵m 𝐼))
62 frlmphl.t . . . . . . . . . 10 · = (.r𝑅)
6352, 49sraip 20451 . . . . . . . . . 10 (𝑥𝐼 → (.r𝑅) = (·𝑖‘((𝐼 × {((subringAlg ‘𝑅)‘𝐵)})‘𝑥)))
6462, 63eqtr2id 2791 . . . . . . . . 9 (𝑥𝐼 → (·𝑖‘((𝐼 × {((subringAlg ‘𝑅)‘𝐵)})‘𝑥)) = · )
6564oveqd 7292 . . . . . . . 8 (𝑥𝐼 → ((𝑓𝑥)(·𝑖‘((𝐼 × {((subringAlg ‘𝑅)‘𝐵)})‘𝑥))(𝑔𝑥)) = ((𝑓𝑥) · (𝑔𝑥)))
6665mpteq2ia 5177 . . . . . . 7 (𝑥𝐼 ↦ ((𝑓𝑥)(·𝑖‘((𝐼 × {((subringAlg ‘𝑅)‘𝐵)})‘𝑥))(𝑔𝑥))) = (𝑥𝐼 ↦ ((𝑓𝑥) · (𝑔𝑥)))
6766oveq2i 7286 . . . . . 6 (𝑅 Σg (𝑥𝐼 ↦ ((𝑓𝑥)(·𝑖‘((𝐼 × {((subringAlg ‘𝑅)‘𝐵)})‘𝑥))(𝑔𝑥)))) = (𝑅 Σg (𝑥𝐼 ↦ ((𝑓𝑥) · (𝑔𝑥))))
6867a1i 11 . . . . 5 ((𝐼𝑊𝑅𝑉) → (𝑅 Σg (𝑥𝐼 ↦ ((𝑓𝑥)(·𝑖‘((𝐼 × {((subringAlg ‘𝑅)‘𝐵)})‘𝑥))(𝑔𝑥)))) = (𝑅 Σg (𝑥𝐼 ↦ ((𝑓𝑥) · (𝑔𝑥)))))
6961, 61, 68mpoeq123dv 7350 . . . 4 ((𝐼𝑊𝑅𝑉) → (𝑓 ∈ (Base‘(𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)}))), 𝑔 ∈ (Base‘(𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)}))) ↦ (𝑅 Σg (𝑥𝐼 ↦ ((𝑓𝑥)(·𝑖‘((𝐼 × {((subringAlg ‘𝑅)‘𝐵)})‘𝑥))(𝑔𝑥))))) = (𝑓 ∈ (𝐵m 𝐼), 𝑔 ∈ (𝐵m 𝐼) ↦ (𝑅 Σg (𝑥𝐼 ↦ ((𝑓𝑥) · (𝑔𝑥))))))
7046, 69eqtrd 2778 . . 3 ((𝐼𝑊𝑅𝑉) → (·𝑖‘(𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)}))) = (𝑓 ∈ (𝐵m 𝐼), 𝑔 ∈ (𝐵m 𝐼) ↦ (𝑅 Σg (𝑥𝐼 ↦ ((𝑓𝑥) · (𝑔𝑥))))))
7135, 70eqtr3id 2792 . 2 ((𝐼𝑊𝑅𝑉) → (·𝑖‘((𝑅Xs(𝐼 × {((subringAlg ‘𝑅)‘𝐵)})) ↾s (Base‘𝑌))) = (𝑓 ∈ (𝐵m 𝐼), 𝑔 ∈ (𝐵m 𝐼) ↦ (𝑅 Σg (𝑥𝐼 ↦ ((𝑓𝑥) · (𝑔𝑥))))))
7230, 71eqtr2d 2779 1 ((𝐼𝑊𝑅𝑉) → (𝑓 ∈ (𝐵m 𝐼), 𝑔 ∈ (𝐵m 𝐼) ↦ (𝑅 Σg (𝑥𝐼 ↦ ((𝑓𝑥) · (𝑔𝑥))))) = (·𝑖𝑌))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 396   = wceq 1539  wcel 2106  wne 2943  Vcvv 3432  wss 3887  c0 4256  {csn 4561  cmpt 5157   × cxp 5587  dom cdm 5589  cfv 6433  (class class class)co 7275  cmpo 7277  m cmap 8615  Xcixp 8685  Basecbs 16912  s cress 16941  .rcmulr 16963  Scalarcsca 16965  ·𝑖cip 16967   Σg cgsu 17151  Xscprds 17156  s cpws 17157  subringAlg csra 20430  ringLModcrglmod 20431   freeLMod cfrlm 20953
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2709  ax-rep 5209  ax-sep 5223  ax-nul 5230  ax-pow 5288  ax-pr 5352  ax-un 7588  ax-cnex 10927  ax-resscn 10928  ax-1cn 10929  ax-icn 10930  ax-addcl 10931  ax-addrcl 10932  ax-mulcl 10933  ax-mulrcl 10934  ax-mulcom 10935  ax-addass 10936  ax-mulass 10937  ax-distr 10938  ax-i2m1 10939  ax-1ne0 10940  ax-1rid 10941  ax-rnegex 10942  ax-rrecex 10943  ax-cnre 10944  ax-pre-lttri 10945  ax-pre-lttrn 10946  ax-pre-ltadd 10947  ax-pre-mulgt0 10948
This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3or 1087  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1783  df-nf 1787  df-sb 2068  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2816  df-nfc 2889  df-ne 2944  df-nel 3050  df-ral 3069  df-rex 3070  df-reu 3072  df-rab 3073  df-v 3434  df-sbc 3717  df-csb 3833  df-dif 3890  df-un 3892  df-in 3894  df-ss 3904  df-pss 3906  df-nul 4257  df-if 4460  df-pw 4535  df-sn 4562  df-pr 4564  df-tp 4566  df-op 4568  df-uni 4840  df-iun 4926  df-br 5075  df-opab 5137  df-mpt 5158  df-tr 5192  df-id 5489  df-eprel 5495  df-po 5503  df-so 5504  df-fr 5544  df-we 5546  df-xp 5595  df-rel 5596  df-cnv 5597  df-co 5598  df-dm 5599  df-rn 5600  df-res 5601  df-ima 5602  df-pred 6202  df-ord 6269  df-on 6270  df-lim 6271  df-suc 6272  df-iota 6391  df-fun 6435  df-fn 6436  df-f 6437  df-f1 6438  df-fo 6439  df-f1o 6440  df-fv 6441  df-riota 7232  df-ov 7278  df-oprab 7279  df-mpo 7280  df-om 7713  df-1st 7831  df-2nd 7832  df-frecs 8097  df-wrecs 8128  df-recs 8202  df-rdg 8241  df-1o 8297  df-er 8498  df-map 8617  df-ixp 8686  df-en 8734  df-dom 8735  df-sdom 8736  df-fin 8737  df-sup 9201  df-pnf 11011  df-mnf 11012  df-xr 11013  df-ltxr 11014  df-le 11015  df-sub 11207  df-neg 11208  df-nn 11974  df-2 12036  df-3 12037  df-4 12038  df-5 12039  df-6 12040  df-7 12041  df-8 12042  df-9 12043  df-n0 12234  df-z 12320  df-dec 12438  df-uz 12583  df-fz 13240  df-struct 16848  df-sets 16865  df-slot 16883  df-ndx 16895  df-base 16913  df-ress 16942  df-plusg 16975  df-mulr 16976  df-sca 16978  df-vsca 16979  df-ip 16980  df-tset 16981  df-ple 16982  df-ds 16984  df-hom 16986  df-cco 16987  df-prds 17158  df-pws 17160  df-sra 20434  df-rgmod 20435  df-dsmm 20939  df-frlm 20954
This theorem is referenced by:  frlmipval  20986  frlmphl  20988
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