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Theorem chjvali 29132
Description: Value of join in C. (Contributed by NM, 9-Aug-2000.) (New usage is discouraged.)
Hypotheses
Ref Expression
chjval.1 𝐴C
chjval.2 𝐵C
Assertion
Ref Expression
chjvali (𝐴 𝐵) = (⊥‘(⊥‘(𝐴𝐵)))

Proof of Theorem chjvali
StepHypRef Expression
1 chjval.1 . 2 𝐴C
2 chjval.2 . 2 𝐵C
3 chjval 29131 . 2 ((𝐴C𝐵C ) → (𝐴 𝐵) = (⊥‘(⊥‘(𝐴𝐵))))
41, 2, 3mp2an 690 1 (𝐴 𝐵) = (⊥‘(⊥‘(𝐴𝐵)))
Colors of variables: wff setvar class
Syntax hints:   = wceq 1537  wcel 2114  cun 3936  cfv 6357  (class class class)co 7158   C cch 28708  cort 28709   chj 28712
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2795  ax-sep 5205  ax-nul 5212  ax-pr 5332  ax-hilex 28778
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2802  df-cleq 2816  df-clel 2895  df-nfc 2965  df-ral 3145  df-rex 3146  df-rab 3149  df-v 3498  df-sbc 3775  df-dif 3941  df-un 3943  df-in 3945  df-ss 3954  df-nul 4294  df-if 4470  df-pw 4543  df-sn 4570  df-pr 4572  df-op 4576  df-uni 4841  df-br 5069  df-opab 5131  df-id 5462  df-xp 5563  df-rel 5564  df-cnv 5565  df-co 5566  df-dm 5567  df-rn 5568  df-res 5569  df-ima 5570  df-iota 6316  df-fun 6359  df-fv 6365  df-ov 7161  df-oprab 7162  df-mpo 7163  df-sh 28986  df-ch 29000  df-chj 29089
This theorem is referenced by:  chj0i  29234  sshhococi  29325
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