Users' Mathboxes Mathbox for BJ < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >   Mathboxes  >  djurclALT Unicode version

Theorem djurclALT 16830
Description: Shortening of djurcl 7392 using djucllem 16828. (Contributed by BJ, 4-Jul-2022.) (Proof modification is discouraged.) (New usage is discouraged.)
Assertion
Ref Expression
djurclALT  |-  ( C  e.  B  ->  (
(inr  |`  B ) `  C )  e.  ( A B ) )

Proof of Theorem djurclALT
Dummy variable  x is distinct from all other variables.
StepHypRef Expression
1 1oex 6695 . . . . 5  |-  1o  e.  _V
2 df-inr 7388 . . . . 5  |- inr  =  ( x  e.  _V  |->  <. 1o ,  x >. )
31, 2djucllem 16828 . . . 4  |-  ( C  e.  B  ->  (
(inr  |`  B ) `  C )  e.  ( { 1o }  X.  B ) )
43olcd 746 . . 3  |-  ( C  e.  B  ->  (
( (inr  |`  B ) `
 C )  e.  ( { (/) }  X.  A )  \/  (
(inr  |`  B ) `  C )  e.  ( { 1o }  X.  B ) ) )
5 elun 3370 . . 3  |-  ( ( (inr  |`  B ) `  C )  e.  ( ( { (/) }  X.  A )  u.  ( { 1o }  X.  B
) )  <->  ( (
(inr  |`  B ) `  C )  e.  ( { (/) }  X.  A
)  \/  ( (inr  |`  B ) `  C
)  e.  ( { 1o }  X.  B
) ) )
64, 5sylibr 134 . 2  |-  ( C  e.  B  ->  (
(inr  |`  B ) `  C )  e.  ( ( { (/) }  X.  A )  u.  ( { 1o }  X.  B
) ) )
7 df-dju 7378 . 2  |-  ( A B )  =  ( ( { (/) }  X.  A )  u.  ( { 1o }  X.  B
) )
86, 7eleqtrrdi 2332 1  |-  ( C  e.  B  ->  (
(inr  |`  B ) `  C )  e.  ( A B ) )
Colors of variables:    wff set class
This proof depends on syntax axioms:    -> wi 4    \/ wo 720    e. wcel 2209    u. cun 3218   (/)c0 3520   {csn 3709    X. cxp 4772    |` cres 4776   ` cfv 5377   1oc1o 6680   ⊔ cdju 7377  inrcinr 7386
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-sep 4249  ax-nul 4259  ax-pow 4311  ax-pr 4346  ax-un 4578
This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  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-ral 2533  df-rex 2534  df-v 2823  df-sbc 3052  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-br 4131  df-opab 4193  df-mpt 4194  df-tr 4230  df-id 4438  df-iord 4511  df-on 4513  df-suc 4516  df-xp 4780  df-rel 4781  df-cnv 4782  df-co 4783  df-dm 4784  df-res 4786  df-iota 5337  df-fun 5379  df-fv 5385  df-1o 6687  df-dju 7378  df-inr 7388
This theorem is used by: (None)
  Copyright terms: Public domain W3C validator