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Theorem acexmidlem1 5849
Description: Lemma for acexmid 5852. List the cases identified in acexmidlemcase 5848 and hook them up to the lemmas which handle each case. (Contributed by Jim Kingdon, 7-Aug-2019.)
Hypotheses
Ref Expression
acexmidlem.a  |-  A  =  { x  e.  { (/)
,  { (/) } }  |  ( x  =  (/)  \/  ph ) }
acexmidlem.b  |-  B  =  { x  e.  { (/)
,  { (/) } }  |  ( x  =  { (/) }  \/  ph ) }
acexmidlem.c  |-  C  =  { A ,  B }
Assertion
Ref Expression
acexmidlem1  |-  ( A. z  e.  C  E! v  e.  z  E. u  e.  y  (
z  e.  u  /\  v  e.  u )  ->  ( ph  \/  -.  ph ) )
Distinct variable groups:    x, y, z, v, u, A    x, B, y, z, v, u   
x, C, y, z, v, u    ph, x, y, z, v, u

Proof of Theorem acexmidlem1
StepHypRef Expression
1 acexmidlem.a . . 3  |-  A  =  { x  e.  { (/)
,  { (/) } }  |  ( x  =  (/)  \/  ph ) }
2 acexmidlem.b . . 3  |-  B  =  { x  e.  { (/)
,  { (/) } }  |  ( x  =  { (/) }  \/  ph ) }
3 acexmidlem.c . . 3  |-  C  =  { A ,  B }
41, 2, 3acexmidlemcase 5848 . 2  |-  ( A. z  e.  C  E! v  e.  z  E. u  e.  y  (
z  e.  u  /\  v  e.  u )  ->  ( { (/) }  e.  A  \/  (/)  e.  B  \/  ( ( iota_ v  e.  A  E. u  e.  y  ( A  e.  u  /\  v  e.  u ) )  =  (/)  /\  ( iota_ v  e.  B  E. u  e.  y  ( B  e.  u  /\  v  e.  u ) )  =  { (/) } ) ) )
51, 2, 3acexmidlema 5844 . . . 4  |-  ( {
(/) }  e.  A  ->  ph )
65orcd 728 . . 3  |-  ( {
(/) }  e.  A  ->  ( ph  \/  -.  ph ) )
71, 2, 3acexmidlemb 5845 . . . 4  |-  ( (/)  e.  B  ->  ph )
87orcd 728 . . 3  |-  ( (/)  e.  B  ->  ( ph  \/  -.  ph ) )
91, 2, 3acexmidlemab 5847 . . . 4  |-  ( ( ( iota_ v  e.  A  E. u  e.  y 
( A  e.  u  /\  v  e.  u
) )  =  (/)  /\  ( iota_ v  e.  B  E. u  e.  y 
( B  e.  u  /\  v  e.  u
) )  =  { (/)
} )  ->  -.  ph )
109olcd 729 . . 3  |-  ( ( ( iota_ v  e.  A  E. u  e.  y 
( A  e.  u  /\  v  e.  u
) )  =  (/)  /\  ( iota_ v  e.  B  E. u  e.  y 
( B  e.  u  /\  v  e.  u
) )  =  { (/)
} )  ->  ( ph  \/  -.  ph )
)
116, 8, 103jaoi 1298 . 2  |-  ( ( { (/) }  e.  A  \/  (/)  e.  B  \/  ( ( iota_ v  e.  A  E. u  e.  y  ( A  e.  u  /\  v  e.  u ) )  =  (/)  /\  ( iota_ v  e.  B  E. u  e.  y  ( B  e.  u  /\  v  e.  u ) )  =  { (/) } ) )  ->  ( ph  \/  -.  ph ) )
124, 11syl 14 1  |-  ( A. z  e.  C  E! v  e.  z  E. u  e.  y  (
z  e.  u  /\  v  e.  u )  ->  ( ph  \/  -.  ph ) )
Colors of variables: wff set class
Syntax hints:   -. wn 3    -> wi 4    /\ wa 103    \/ wo 703    \/ w3o 972    = wceq 1348    e. wcel 2141   A.wral 2448   E.wrex 2449   E!wreu 2450   {crab 2452   (/)c0 3414   {csn 3583   {cpr 3584   iota_crio 5808
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 609  ax-in2 610  ax-io 704  ax-5 1440  ax-7 1441  ax-gen 1442  ax-ie1 1486  ax-ie2 1487  ax-8 1497  ax-10 1498  ax-11 1499  ax-i12 1500  ax-bndl 1502  ax-4 1503  ax-17 1519  ax-i9 1523  ax-ial 1527  ax-i5r 1528  ax-14 2144  ax-ext 2152  ax-sep 4107  ax-nul 4115  ax-pow 4160
This theorem depends on definitions:  df-bi 116  df-3or 974  df-3an 975  df-tru 1351  df-nf 1454  df-sb 1756  df-eu 2022  df-clab 2157  df-cleq 2163  df-clel 2166  df-nfc 2301  df-ral 2453  df-rex 2454  df-reu 2455  df-rab 2457  df-v 2732  df-sbc 2956  df-dif 3123  df-un 3125  df-in 3127  df-ss 3134  df-nul 3415  df-pw 3568  df-sn 3589  df-pr 3590  df-uni 3797  df-tr 4088  df-iord 4351  df-on 4353  df-suc 4356  df-iota 5160  df-riota 5809
This theorem is referenced by:  acexmidlem2  5850
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