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Theorem proj1eq 4589
Description: Equality theorem for first projection operator. (Contributed by SF, 2-Jan-2015.)
Assertion
Ref Expression
proj1eq (A = B Proj1 A = Proj1 B)

Proof of Theorem proj1eq
StepHypRef Expression
1 imakeq2 4225 . 2 (A = B → (kImagek((Imagek(( Ins3k ∼ (( Ins3k SkIns2k Sk ) “k 111c) (( Ins2k Ins2k Sk ⊕ ( Ins2k Ins3k SkIns3k SIk SIk Sk )) “k 11111c)) “k 111c) ∩ ( Nn ×k V)) ∪ ( Ik ∩ ( ∼ Nn ×k V))) “k A) = (kImagek((Imagek(( Ins3k ∼ (( Ins3k SkIns2k Sk ) “k 111c) (( Ins2k Ins2k Sk ⊕ ( Ins2k Ins3k SkIns3k SIk SIk Sk )) “k 11111c)) “k 111c) ∩ ( Nn ×k V)) ∪ ( Ik ∩ ( ∼ Nn ×k V))) “k B))
2 dfproj12 4576 . 2 Proj1 A = (kImagek((Imagek(( Ins3k ∼ (( Ins3k SkIns2k Sk ) “k 111c) (( Ins2k Ins2k Sk ⊕ ( Ins2k Ins3k SkIns3k SIk SIk Sk )) “k 11111c)) “k 111c) ∩ ( Nn ×k V)) ∪ ( Ik ∩ ( ∼ Nn ×k V))) “k A)
3 dfproj12 4576 . 2 Proj1 B = (kImagek((Imagek(( Ins3k ∼ (( Ins3k SkIns2k Sk ) “k 111c) (( Ins2k Ins2k Sk ⊕ ( Ins2k Ins3k SkIns3k SIk SIk Sk )) “k 11111c)) “k 111c) ∩ ( Nn ×k V)) ∪ ( Ik ∩ ( ∼ Nn ×k V))) “k B)
41, 2, 33eqtr4g 2410 1 (A = B Proj1 A = Proj1 B)
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1642  Vcvv 2859  ccompl 3205   cdif 3206  cun 3207  cin 3208  csymdif 3209  1cc1c 4134  1cpw1 4135   ×k cxpk 4174  kccnvk 4175   Ins2k cins2k 4176   Ins3k cins3k 4177  k cimak 4179   SIk csik 4181  Imagekcimagek 4182   Sk cssetk 4183   Ik cidk 4184   Nn cnnc 4373   Proj1 cproj1 4563
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1546  ax-5 1557  ax-17 1616  ax-9 1654  ax-8 1675  ax-6 1729  ax-7 1734  ax-11 1746  ax-12 1925  ax-ext 2334  ax-nin 4078  ax-sn 4087
This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-3an 936  df-nan 1288  df-tru 1319  df-ex 1542  df-nf 1545  df-sb 1649  df-clab 2340  df-cleq 2346  df-clel 2349  df-nfc 2478  df-ne 2518  df-ral 2619  df-rex 2620  df-v 2861  df-nin 3211  df-compl 3212  df-in 3213  df-un 3214  df-dif 3215  df-symdif 3216  df-ss 3259  df-nul 3551  df-if 3663  df-pw 3724  df-sn 3741  df-pr 3742  df-opk 4058  df-1c 4136  df-pw1 4137  df-xpk 4185  df-cnvk 4186  df-ins2k 4187  df-ins3k 4188  df-imak 4189  df-cok 4190  df-sik 4192  df-ssetk 4193  df-imagek 4194  df-idk 4195  df-addc 4378  df-phi 4565  df-proj1 4567
This theorem is referenced by:  opth  4602
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