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Theorem sravscag 14782
Description: The scalar product operation of a subring algebra. (Contributed by Stefan O'Rear, 27-Nov-2014.) (Revised by Mario Carneiro, 4-Oct-2015.) (Revised by Thierry Arnoux, 16-Jun-2019.) (Proof shortened by AV, 12-Nov-2024.)
Hypotheses
Ref Expression
srapart.a (𝜑𝐴 = ((subringAlg ‘𝑊)‘𝑆))
srapart.s (𝜑𝑆 ⊆ (Base‘𝑊))
srapart.ex (𝜑𝑊𝑋)
Assertion
Ref Expression
sravscag (𝜑 → (.r𝑊) = ( ·𝑠𝐴))

Proof of Theorem sravscag
StepHypRef Expression
1 srapart.ex . . . . 5 (𝜑𝑊𝑋)
2 scaslid 13509 . . . . . . 7 (Scalar = Slot (Scalar‘ndx) ∧ (Scalar‘ndx) ∈ ℕ)
32simpri 113 . . . . . 6 (Scalar‘ndx) ∈ ℕ
43a1i 9 . . . . 5 (𝜑 → (Scalar‘ndx) ∈ ℕ)
5 basfn 13413 . . . . . . . 8 Base Fn V
61elexd 2835 . . . . . . . 8 (𝜑𝑊 ∈ V)
7 funfvex 5712 . . . . . . . . 9 ((Fun Base ∧ 𝑊 ∈ dom Base) → (Base‘𝑊) ∈ V)
87funfni 5483 . . . . . . . 8 ((Base Fn V ∧ 𝑊 ∈ V) → (Base‘𝑊) ∈ V)
95, 6, 8sylancr 418 . . . . . . 7 (𝜑 → (Base‘𝑊) ∈ V)
10 srapart.s . . . . . . 7 (𝜑𝑆 ⊆ (Base‘𝑊))
119, 10ssexd 4273 . . . . . 6 (𝜑𝑆 ∈ V)
12 ressex 13421 . . . . . 6 ((𝑊𝑋𝑆 ∈ V) → (𝑊s 𝑆) ∈ V)
131, 11, 12syl2anc 415 . . . . 5 (𝜑 → (𝑊s 𝑆) ∈ V)
14 setsex 13386 . . . . 5 ((𝑊𝑋 ∧ (Scalar‘ndx) ∈ ℕ ∧ (𝑊s 𝑆) ∈ V) → (𝑊 sSet ⟨(Scalar‘ndx), (𝑊s 𝑆)⟩) ∈ V)
151, 4, 13, 14syl3anc 1278 . . . 4 (𝜑 → (𝑊 sSet ⟨(Scalar‘ndx), (𝑊s 𝑆)⟩) ∈ V)
16 vscaslid 13519 . . . . . 6 ( ·𝑠 = Slot ( ·𝑠 ‘ndx) ∧ ( ·𝑠 ‘ndx) ∈ ℕ)
1716simpri 113 . . . . 5 ( ·𝑠 ‘ndx) ∈ ℕ
1817a1i 9 . . . 4 (𝜑 → ( ·𝑠 ‘ndx) ∈ ℕ)
19 mulrslid 13488 . . . . . 6 (.r = Slot (.r‘ndx) ∧ (.r‘ndx) ∈ ℕ)
2019slotex 13381 . . . . 5 (𝑊𝑋 → (.r𝑊) ∈ V)
211, 20syl 14 . . . 4 (𝜑 → (.r𝑊) ∈ V)
22 setsex 13386 . . . 4 (((𝑊 sSet ⟨(Scalar‘ndx), (𝑊s 𝑆)⟩) ∈ V ∧ ( ·𝑠 ‘ndx) ∈ ℕ ∧ (.r𝑊) ∈ V) → ((𝑊 sSet ⟨(Scalar‘ndx), (𝑊s 𝑆)⟩) sSet ⟨( ·𝑠 ‘ndx), (.r𝑊)⟩) ∈ V)
2315, 18, 21, 22syl3anc 1278 . . 3 (𝜑 → ((𝑊 sSet ⟨(Scalar‘ndx), (𝑊s 𝑆)⟩) sSet ⟨( ·𝑠 ‘ndx), (.r𝑊)⟩) ∈ V)
24 slotsdifipndx 13531 . . . . 5 (( ·𝑠 ‘ndx) ≠ (·𝑖‘ndx) ∧ (Scalar‘ndx) ≠ (·𝑖‘ndx))
2524simpli 111 . . . 4 ( ·𝑠 ‘ndx) ≠ (·𝑖‘ndx)
26 ipslid 13527 . . . . 5 (·𝑖 = Slot (·𝑖‘ndx) ∧ (·𝑖‘ndx) ∈ ℕ)
2726simpri 113 . . . 4 (·𝑖‘ndx) ∈ ℕ
2816, 25, 27setsslnid 13406 . . 3 ((((𝑊 sSet ⟨(Scalar‘ndx), (𝑊s 𝑆)⟩) sSet ⟨( ·𝑠 ‘ndx), (.r𝑊)⟩) ∈ V ∧ (.r𝑊) ∈ V) → ( ·𝑠 ‘((𝑊 sSet ⟨(Scalar‘ndx), (𝑊s 𝑆)⟩) sSet ⟨( ·𝑠 ‘ndx), (.r𝑊)⟩)) = ( ·𝑠 ‘(((𝑊 sSet ⟨(Scalar‘ndx), (𝑊s 𝑆)⟩) sSet ⟨( ·𝑠 ‘ndx), (.r𝑊)⟩) sSet ⟨(·𝑖‘ndx), (.r𝑊)⟩)))
2923, 21, 28syl2anc 415 . 2 (𝜑 → ( ·𝑠 ‘((𝑊 sSet ⟨(Scalar‘ndx), (𝑊s 𝑆)⟩) sSet ⟨( ·𝑠 ‘ndx), (.r𝑊)⟩)) = ( ·𝑠 ‘(((𝑊 sSet ⟨(Scalar‘ndx), (𝑊s 𝑆)⟩) sSet ⟨( ·𝑠 ‘ndx), (.r𝑊)⟩) sSet ⟨(·𝑖‘ndx), (.r𝑊)⟩)))
3016setsslid 13405 . . 3 (((𝑊 sSet ⟨(Scalar‘ndx), (𝑊s 𝑆)⟩) ∈ V ∧ (.r𝑊) ∈ V) → (.r𝑊) = ( ·𝑠 ‘((𝑊 sSet ⟨(Scalar‘ndx), (𝑊s 𝑆)⟩) sSet ⟨( ·𝑠 ‘ndx), (.r𝑊)⟩)))
3115, 21, 30syl2anc 415 . 2 (𝜑 → (.r𝑊) = ( ·𝑠 ‘((𝑊 sSet ⟨(Scalar‘ndx), (𝑊s 𝑆)⟩) sSet ⟨( ·𝑠 ‘ndx), (.r𝑊)⟩)))
32 srapart.a . . . 4 (𝜑𝐴 = ((subringAlg ‘𝑊)‘𝑆))
33 sraval 14776 . . . . 5 ((𝑊 ∈ V ∧ 𝑆 ⊆ (Base‘𝑊)) → ((subringAlg ‘𝑊)‘𝑆) = (((𝑊 sSet ⟨(Scalar‘ndx), (𝑊s 𝑆)⟩) sSet ⟨( ·𝑠 ‘ndx), (.r𝑊)⟩) sSet ⟨(·𝑖‘ndx), (.r𝑊)⟩))
346, 10, 33syl2anc 415 . . . 4 (𝜑 → ((subringAlg ‘𝑊)‘𝑆) = (((𝑊 sSet ⟨(Scalar‘ndx), (𝑊s 𝑆)⟩) sSet ⟨( ·𝑠 ‘ndx), (.r𝑊)⟩) sSet ⟨(·𝑖‘ndx), (.r𝑊)⟩))
3532, 34eqtrd 2271 . . 3 (𝜑𝐴 = (((𝑊 sSet ⟨(Scalar‘ndx), (𝑊s 𝑆)⟩) sSet ⟨( ·𝑠 ‘ndx), (.r𝑊)⟩) sSet ⟨(·𝑖‘ndx), (.r𝑊)⟩))
3635fveq2d 5699 . 2 (𝜑 → ( ·𝑠𝐴) = ( ·𝑠 ‘(((𝑊 sSet ⟨(Scalar‘ndx), (𝑊s 𝑆)⟩) sSet ⟨( ·𝑠 ‘ndx), (.r𝑊)⟩) sSet ⟨(·𝑖‘ndx), (.r𝑊)⟩)))
3729, 31, 363eqtr4d 2281 1 (𝜑 → (.r𝑊) = ( ·𝑠𝐴))
Colors of variables:    wff set class
This proof depends on syntax axioms:  wi 4   = wceq 1402  wcel 2209  wne 2420  Vcvv 2821  wss 3220  cop 3712   Fn wfn 5372  cfv 5377  (class class class)co 6085  cn 9305  ndxcnx 13351   sSet csts 13352  Slot cslot 13353  Basecbs 13354  s cress 13355  .rcmulr 13434  Scalarcsca 13436   ·𝑠 cvsca 13437  ·𝑖cip 13438  subringAlg csra 14772
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-coll 4246  ax-sep 4249  ax-pow 4311  ax-pr 4346  ax-un 4578  ax-setind 4684  ax-cnex 8270  ax-resscn 8271  ax-1cn 8272  ax-1re 8273  ax-icn 8274  ax-addcl 8275  ax-addrcl 8276  ax-mulcl 8277  ax-addcom 8279  ax-addass 8281  ax-i2m1 8284  ax-0lt1 8285  ax-0id 8287  ax-rnegex 8288  ax-pre-ltirr 8291  ax-pre-lttrn 8293  ax-pre-ltadd 8295
This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-fal 1408  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ne 2421  df-nel 2516  df-ral 2533  df-rex 2534  df-reu 2535  df-rab 2537  df-v 2823  df-sbc 3052  df-csb 3148  df-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-nul 3521  df-pw 3690  df-sn 3715  df-pr 3716  df-op 3718  df-uni 3936  df-int 3971  df-iun 4014  df-br 4131  df-opab 4193  df-mpt 4194  df-id 4438  df-xp 4780  df-rel 4781  df-cnv 4782  df-co 4783  df-dm 4784  df-rn 4785  df-res 4786  df-ima 4787  df-iota 5337  df-fun 5379  df-fn 5380  df-f 5381  df-f1 5382  df-fo 5383  df-f1o 5384  df-fv 5385  df-ov 6088  df-oprab 6089  df-mpo 6090  df-pnf 8362  df-mnf 8363  df-ltxr 8365  df-inn 9306  df-2 9364  df-3 9365  df-4 9366  df-5 9367  df-6 9368  df-7 9369  df-8 9370  df-ndx 13357  df-slot 13358  df-base 13360  df-sets 13361  df-iress 13362  df-mulr 13447  df-sca 13449  df-vsca 13450  df-ip 13451  df-sra 14774
This theorem is used by:  sralmod  14789  rlmvscag  14800
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