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Theorem minmar1val 20502
Description: Third substitution for the definition of a matrix for a minor. (Contributed by AV, 31-Dec-2018.)
Hypotheses
Ref Expression
minmar1fval.a 𝐴 = (𝑁 Mat 𝑅)
minmar1fval.b 𝐵 = (Base‘𝐴)
minmar1fval.q 𝑄 = (𝑁 minMatR1 𝑅)
minmar1fval.o 1 = (1r𝑅)
minmar1fval.z 0 = (0g𝑅)
Assertion
Ref Expression
minmar1val ((𝑀𝐵𝐾𝑁𝐿𝑁) → (𝐾(𝑄𝑀)𝐿) = (𝑖𝑁, 𝑗𝑁 ↦ if(𝑖 = 𝐾, if(𝑗 = 𝐿, 1 , 0 ), (𝑖𝑀𝑗))))
Distinct variable groups:   𝑖,𝑁,𝑗   𝑅,𝑖,𝑗   𝑖,𝑀,𝑗   𝑖,𝐾,𝑗   𝑖,𝐿,𝑗
Allowed substitution hints:   𝐴(𝑖,𝑗)   𝐵(𝑖,𝑗)   𝑄(𝑖,𝑗)   1 (𝑖,𝑗)   0 (𝑖,𝑗)

Proof of Theorem minmar1val
Dummy variables 𝑘 𝑙 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 minmar1fval.a . . . 4 𝐴 = (𝑁 Mat 𝑅)
2 minmar1fval.b . . . 4 𝐵 = (Base‘𝐴)
3 minmar1fval.q . . . 4 𝑄 = (𝑁 minMatR1 𝑅)
4 minmar1fval.o . . . 4 1 = (1r𝑅)
5 minmar1fval.z . . . 4 0 = (0g𝑅)
61, 2, 3, 4, 5minmar1val0 20501 . . 3 (𝑀𝐵 → (𝑄𝑀) = (𝑘𝑁, 𝑙𝑁 ↦ (𝑖𝑁, 𝑗𝑁 ↦ if(𝑖 = 𝑘, if(𝑗 = 𝑙, 1 , 0 ), (𝑖𝑀𝑗)))))
763ad2ant1 1102 . 2 ((𝑀𝐵𝐾𝑁𝐿𝑁) → (𝑄𝑀) = (𝑘𝑁, 𝑙𝑁 ↦ (𝑖𝑁, 𝑗𝑁 ↦ if(𝑖 = 𝑘, if(𝑗 = 𝑙, 1 , 0 ), (𝑖𝑀𝑗)))))
8 simp2 1082 . . 3 ((𝑀𝐵𝐾𝑁𝐿𝑁) → 𝐾𝑁)
9 simpl3 1086 . . 3 (((𝑀𝐵𝐾𝑁𝐿𝑁) ∧ 𝑘 = 𝐾) → 𝐿𝑁)
101, 2matrcl 20266 . . . . . . . 8 (𝑀𝐵 → (𝑁 ∈ Fin ∧ 𝑅 ∈ V))
1110simpld 474 . . . . . . 7 (𝑀𝐵𝑁 ∈ Fin)
1211, 11jca 553 . . . . . 6 (𝑀𝐵 → (𝑁 ∈ Fin ∧ 𝑁 ∈ Fin))
13123ad2ant1 1102 . . . . 5 ((𝑀𝐵𝐾𝑁𝐿𝑁) → (𝑁 ∈ Fin ∧ 𝑁 ∈ Fin))
1413adantr 480 . . . 4 (((𝑀𝐵𝐾𝑁𝐿𝑁) ∧ (𝑘 = 𝐾𝑙 = 𝐿)) → (𝑁 ∈ Fin ∧ 𝑁 ∈ Fin))
15 mpt2exga 7291 . . . 4 ((𝑁 ∈ Fin ∧ 𝑁 ∈ Fin) → (𝑖𝑁, 𝑗𝑁 ↦ if(𝑖 = 𝑘, if(𝑗 = 𝑙, 1 , 0 ), (𝑖𝑀𝑗))) ∈ V)
1614, 15syl 17 . . 3 (((𝑀𝐵𝐾𝑁𝐿𝑁) ∧ (𝑘 = 𝐾𝑙 = 𝐿)) → (𝑖𝑁, 𝑗𝑁 ↦ if(𝑖 = 𝑘, if(𝑗 = 𝑙, 1 , 0 ), (𝑖𝑀𝑗))) ∈ V)
17 eqeq2 2662 . . . . . . 7 (𝑘 = 𝐾 → (𝑖 = 𝑘𝑖 = 𝐾))
1817adantr 480 . . . . . 6 ((𝑘 = 𝐾𝑙 = 𝐿) → (𝑖 = 𝑘𝑖 = 𝐾))
19 eqeq2 2662 . . . . . . . 8 (𝑙 = 𝐿 → (𝑗 = 𝑙𝑗 = 𝐿))
2019ifbid 4141 . . . . . . 7 (𝑙 = 𝐿 → if(𝑗 = 𝑙, 1 , 0 ) = if(𝑗 = 𝐿, 1 , 0 ))
2120adantl 481 . . . . . 6 ((𝑘 = 𝐾𝑙 = 𝐿) → if(𝑗 = 𝑙, 1 , 0 ) = if(𝑗 = 𝐿, 1 , 0 ))
2218, 21ifbieq1d 4142 . . . . 5 ((𝑘 = 𝐾𝑙 = 𝐿) → if(𝑖 = 𝑘, if(𝑗 = 𝑙, 1 , 0 ), (𝑖𝑀𝑗)) = if(𝑖 = 𝐾, if(𝑗 = 𝐿, 1 , 0 ), (𝑖𝑀𝑗)))
2322mpt2eq3dv 6763 . . . 4 ((𝑘 = 𝐾𝑙 = 𝐿) → (𝑖𝑁, 𝑗𝑁 ↦ if(𝑖 = 𝑘, if(𝑗 = 𝑙, 1 , 0 ), (𝑖𝑀𝑗))) = (𝑖𝑁, 𝑗𝑁 ↦ if(𝑖 = 𝐾, if(𝑗 = 𝐿, 1 , 0 ), (𝑖𝑀𝑗))))
2423adantl 481 . . 3 (((𝑀𝐵𝐾𝑁𝐿𝑁) ∧ (𝑘 = 𝐾𝑙 = 𝐿)) → (𝑖𝑁, 𝑗𝑁 ↦ if(𝑖 = 𝑘, if(𝑗 = 𝑙, 1 , 0 ), (𝑖𝑀𝑗))) = (𝑖𝑁, 𝑗𝑁 ↦ if(𝑖 = 𝐾, if(𝑗 = 𝐿, 1 , 0 ), (𝑖𝑀𝑗))))
258, 9, 16, 24ovmpt2dv2 6836 . 2 ((𝑀𝐵𝐾𝑁𝐿𝑁) → ((𝑄𝑀) = (𝑘𝑁, 𝑙𝑁 ↦ (𝑖𝑁, 𝑗𝑁 ↦ if(𝑖 = 𝑘, if(𝑗 = 𝑙, 1 , 0 ), (𝑖𝑀𝑗)))) → (𝐾(𝑄𝑀)𝐿) = (𝑖𝑁, 𝑗𝑁 ↦ if(𝑖 = 𝐾, if(𝑗 = 𝐿, 1 , 0 ), (𝑖𝑀𝑗)))))
267, 25mpd 15 1 ((𝑀𝐵𝐾𝑁𝐿𝑁) → (𝐾(𝑄𝑀)𝐿) = (𝑖𝑁, 𝑗𝑁 ↦ if(𝑖 = 𝐾, if(𝑗 = 𝐿, 1 , 0 ), (𝑖𝑀𝑗))))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 196  wa 383  w3a 1054   = wceq 1523  wcel 2030  Vcvv 3231  ifcif 4119  cfv 5926  (class class class)co 6690  cmpt2 6692  Fincfn 7997  Basecbs 15904  0gc0g 16147  1rcur 18547   Mat cmat 20261   minMatR1 cminmar1 20487
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1762  ax-4 1777  ax-5 1879  ax-6 1945  ax-7 1981  ax-8 2032  ax-9 2039  ax-10 2059  ax-11 2074  ax-12 2087  ax-13 2282  ax-ext 2631  ax-rep 4804  ax-sep 4814  ax-nul 4822  ax-pow 4873  ax-pr 4936  ax-un 6991
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3an 1056  df-tru 1526  df-ex 1745  df-nf 1750  df-sb 1938  df-eu 2502  df-mo 2503  df-clab 2638  df-cleq 2644  df-clel 2647  df-nfc 2782  df-ne 2824  df-ral 2946  df-rex 2947  df-reu 2948  df-rab 2950  df-v 3233  df-sbc 3469  df-csb 3567  df-dif 3610  df-un 3612  df-in 3614  df-ss 3621  df-nul 3949  df-if 4120  df-pw 4193  df-sn 4211  df-pr 4213  df-op 4217  df-uni 4469  df-iun 4554  df-br 4686  df-opab 4746  df-mpt 4763  df-id 5053  df-xp 5149  df-rel 5150  df-cnv 5151  df-co 5152  df-dm 5153  df-rn 5154  df-res 5155  df-ima 5156  df-iota 5889  df-fun 5928  df-fn 5929  df-f 5930  df-f1 5931  df-fo 5932  df-f1o 5933  df-fv 5934  df-ov 6693  df-oprab 6694  df-mpt2 6695  df-1st 7210  df-2nd 7211  df-slot 15908  df-base 15910  df-mat 20262  df-minmar1 20489
This theorem is referenced by:  minmar1eval  20503  maducoevalmin1  20506  smadiadet  20524  smadiadetglem2  20526
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