ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  djuenun Unicode version

Theorem djuenun 7168
Description: Disjoint union is equinumerous to union for disjoint sets. (Contributed by Mario Carneiro, 29-Apr-2015.) (Revised by Jim Kingdon, 19-Aug-2023.)
Assertion
Ref Expression
djuenun  |-  ( ( A  ~~  B  /\  C  ~~  D  /\  ( B  i^i  D )  =  (/) )  ->  ( A C )  ~~  ( B  u.  D )
)

Proof of Theorem djuenun
StepHypRef Expression
1 djuen 7167 . . 3  |-  ( ( A  ~~  B  /\  C  ~~  D )  -> 
( A C )  ~~  ( B D )
)
213adant3 1007 . 2  |-  ( ( A  ~~  B  /\  C  ~~  D  /\  ( B  i^i  D )  =  (/) )  ->  ( A C )  ~~  ( B D ) )
3 relen 6710 . . . 4  |-  Rel  ~~
43brrelex2i 4648 . . 3  |-  ( A 
~~  B  ->  B  e.  _V )
53brrelex2i 4648 . . 3  |-  ( C 
~~  D  ->  D  e.  _V )
6 id 19 . . 3  |-  ( ( B  i^i  D )  =  (/)  ->  ( B  i^i  D )  =  (/) )
7 endjudisj 7166 . . 3  |-  ( ( B  e.  _V  /\  D  e.  _V  /\  ( B  i^i  D )  =  (/) )  ->  ( B D )  ~~  ( B  u.  D )
)
84, 5, 6, 7syl3an 1270 . 2  |-  ( ( A  ~~  B  /\  C  ~~  D  /\  ( B  i^i  D )  =  (/) )  ->  ( B D )  ~~  ( B  u.  D )
)
9 entr 6750 . 2  |-  ( ( ( A C )  ~~  ( B D )  /\  ( B D )  ~~  ( B  u.  D
) )  ->  ( A C )  ~~  ( B  u.  D )
)
102, 8, 9syl2anc 409 1  |-  ( ( A  ~~  B  /\  C  ~~  D  /\  ( B  i^i  D )  =  (/) )  ->  ( A C )  ~~  ( B  u.  D )
)
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ w3a 968    = wceq 1343    e. wcel 2136   _Vcvv 2726    u. cun 3114    i^i cin 3115   (/)c0 3409   class class class wbr 3982    ~~ cen 6704   ⊔ cdju 7002
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 604  ax-in2 605  ax-io 699  ax-5 1435  ax-7 1436  ax-gen 1437  ax-ie1 1481  ax-ie2 1482  ax-8 1492  ax-10 1493  ax-11 1494  ax-i12 1495  ax-bndl 1497  ax-4 1498  ax-17 1514  ax-i9 1518  ax-ial 1522  ax-i5r 1523  ax-13 2138  ax-14 2139  ax-ext 2147  ax-coll 4097  ax-sep 4100  ax-nul 4108  ax-pow 4153  ax-pr 4187  ax-un 4411
This theorem depends on definitions:  df-bi 116  df-3an 970  df-tru 1346  df-fal 1349  df-nf 1449  df-sb 1751  df-eu 2017  df-mo 2018  df-clab 2152  df-cleq 2158  df-clel 2161  df-nfc 2297  df-ne 2337  df-ral 2449  df-rex 2450  df-reu 2451  df-rab 2453  df-v 2728  df-sbc 2952  df-csb 3046  df-dif 3118  df-un 3120  df-in 3122  df-ss 3129  df-nul 3410  df-pw 3561  df-sn 3582  df-pr 3583  df-op 3585  df-uni 3790  df-iun 3868  df-br 3983  df-opab 4044  df-mpt 4045  df-tr 4081  df-id 4271  df-iord 4344  df-on 4346  df-suc 4349  df-xp 4610  df-rel 4611  df-cnv 4612  df-co 4613  df-dm 4614  df-rn 4615  df-res 4616  df-ima 4617  df-iota 5153  df-fun 5190  df-fn 5191  df-f 5192  df-f1 5193  df-fo 5194  df-f1o 5195  df-fv 5196  df-1st 6108  df-2nd 6109  df-1o 6384  df-er 6501  df-en 6707  df-dju 7003  df-inl 7012  df-inr 7013
This theorem is referenced by:  dju1en  7169  djucomen  7172  djuassen  7173  xpdjuen  7174
  Copyright terms: Public domain W3C validator