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Theorem supp0 6416
Description: The support of the empty set is the empty set. (Contributed by AV, 12-Apr-2019.)
Assertion
Ref Expression
supp0  |-  ( Z  e.  W  ->  ( (/) supp  Z )  =  (/) )

Proof of Theorem supp0
Dummy variable  i is distinct from all other variables.
StepHypRef Expression
1 0ex 4221 . . 3  |-  (/)  e.  _V
2 suppval 6415 . . 3  |-  ( (
(/)  e.  _V  /\  Z  e.  W )  ->  ( (/) supp  Z )  =  {
i  e.  dom  (/)  |  (
(/) " { i } )  =/=  { Z } } )
31, 2mpan 424 . 2  |-  ( Z  e.  W  ->  ( (/) supp  Z )  =  {
i  e.  dom  (/)  |  (
(/) " { i } )  =/=  { Z } } )
4 dm0 4951 . . 3  |-  dom  (/)  =  (/)
5 rabeq 2795 . . 3  |-  ( dom  (/)  =  (/)  ->  { i  e.  dom  (/)  |  (
(/) " { i } )  =/=  { Z } }  =  {
i  e.  (/)  |  (
(/) " { i } )  =/=  { Z } } )
64, 5mp1i 10 . 2  |-  ( Z  e.  W  ->  { i  e.  dom  (/)  |  (
(/) " { i } )  =/=  { Z } }  =  {
i  e.  (/)  |  (
(/) " { i } )  =/=  { Z } } )
7 rab0 3525 . . 3  |-  { i  e.  (/)  |  ( (/) " { i } )  =/=  { Z } }  =  (/)
87a1i 9 . 2  |-  ( Z  e.  W  ->  { i  e.  (/)  |  ( (/) " { i } )  =/=  { Z } }  =  (/) )
93, 6, 83eqtrd 2268 1  |-  ( Z  e.  W  ->  ( (/) supp  Z )  =  (/) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    = wceq 1398    e. wcel 2202    =/= wne 2403   {crab 2515   _Vcvv 2803   (/)c0 3496   {csn 3673   dom cdm 4731   "cima 4734  (class class class)co 6028   supp csupp 6413
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2204  ax-14 2205  ax-ext 2213  ax-sep 4212  ax-nul 4220  ax-pow 4270  ax-pr 4305  ax-un 4536  ax-setind 4641
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2364  df-ne 2404  df-ral 2516  df-rex 2517  df-rab 2520  df-v 2805  df-sbc 3033  df-dif 3203  df-un 3205  df-in 3207  df-ss 3214  df-nul 3497  df-pw 3658  df-sn 3679  df-pr 3680  df-op 3682  df-uni 3899  df-br 4094  df-opab 4156  df-id 4396  df-xp 4737  df-rel 4738  df-cnv 4739  df-co 4740  df-dm 4741  df-rn 4742  df-res 4743  df-ima 4744  df-iota 5293  df-fun 5335  df-fv 5341  df-ov 6031  df-oprab 6032  df-mpo 6033  df-supp 6414
This theorem is referenced by: (None)
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