MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  oif Unicode version

Theorem oif 7335
Description: The order isomorphism of the well-order  R on  A is a function. (Contributed by Mario Carneiro, 23-May-2015.)
Hypothesis
Ref Expression
oicl.1  |-  F  = OrdIso
( R ,  A
)
Assertion
Ref Expression
oif  |-  F : dom  F --> A

Proof of Theorem oif
Dummy variables  u  t  v  x  h  j  w  z  f 
i  r  s  y are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 eqid 2358 . . . . 5  |- recs ( ( h  e.  _V  |->  (
iota_ v  e.  { w  e.  A  |  A. j  e.  ran  h  j R w } A. u  e.  { w  e.  A  |  A. j  e.  ran  h  j R w }  -.  u R v ) ) )  = recs ( ( h  e.  _V  |->  (
iota_ v  e.  { w  e.  A  |  A. j  e.  ran  h  j R w } A. u  e.  { w  e.  A  |  A. j  e.  ran  h  j R w }  -.  u R v ) ) )
2 eqid 2358 . . . . 5  |-  { w  e.  A  |  A. j  e.  ran  h  j R w }  =  { w  e.  A  |  A. j  e.  ran  h  j R w }
3 eqid 2358 . . . . 5  |-  ( h  e.  _V  |->  ( iota_ v  e.  { w  e.  A  |  A. j  e.  ran  h  j R w } A. u  e.  { w  e.  A  |  A. j  e.  ran  h  j R w }  -.  u R v ) )  =  ( h  e.  _V  |->  ( iota_ v  e.  {
w  e.  A  |  A. j  e.  ran  h  j R w } A. u  e. 
{ w  e.  A  |  A. j  e.  ran  h  j R w }  -.  u R v ) )
41, 2, 3ordtypecbv 7322 . . . 4  |- recs ( ( f  e.  _V  |->  (
iota_ s  e.  { y  e.  A  |  A. i  e.  ran  f  i R y } A. r  e.  { y  e.  A  |  A. i  e.  ran  f  i R y }  -.  r R s ) ) )  = recs ( ( h  e.  _V  |->  (
iota_ v  e.  { w  e.  A  |  A. j  e.  ran  h  j R w } A. u  e.  { w  e.  A  |  A. j  e.  ran  h  j R w }  -.  u R v ) ) )
5 eqid 2358 . . . 4  |-  { x  e.  On  |  E. t  e.  A  A. z  e.  (recs ( ( f  e.  _V  |->  ( iota_ s  e.  { y  e.  A  |  A. i  e.  ran  f  i R y } A. r  e.  { y  e.  A  |  A. i  e.  ran  f  i R y }  -.  r R s ) ) )
" x ) z R t }  =  { x  e.  On  |  E. t  e.  A  A. z  e.  (recs ( ( f  e. 
_V  |->  ( iota_ s  e. 
{ y  e.  A  |  A. i  e.  ran  f  i R y } A. r  e. 
{ y  e.  A  |  A. i  e.  ran  f  i R y }  -.  r R s ) ) )
" x ) z R t }
6 oicl.1 . . . 4  |-  F  = OrdIso
( R ,  A
)
7 simpl 443 . . . 4  |-  ( ( R  We  A  /\  R Se  A )  ->  R  We  A )
8 simpr 447 . . . 4  |-  ( ( R  We  A  /\  R Se  A )  ->  R Se  A )
94, 2, 3, 5, 6, 7, 8ordtypelem5 7327 . . 3  |-  ( ( R  We  A  /\  R Se  A )  ->  ( Ord  dom  F  /\  F : dom  F --> A ) )
109simprd 449 . 2  |-  ( ( R  We  A  /\  R Se  A )  ->  F : dom  F --> A )
11 f0 5508 . . 3  |-  (/) : (/) --> A
126oi0 7333 . . . 4  |-  ( -.  ( R  We  A  /\  R Se  A )  ->  F  =  (/) )
1312dmeqd 4963 . . . . 5  |-  ( -.  ( R  We  A  /\  R Se  A )  ->  dom  F  =  dom  (/) )
14 dm0 4974 . . . . 5  |-  dom  (/)  =  (/)
1513, 14syl6eq 2406 . . . 4  |-  ( -.  ( R  We  A  /\  R Se  A )  ->  dom  F  =  (/) )
1612, 15feq12d 5463 . . 3  |-  ( -.  ( R  We  A  /\  R Se  A )  ->  ( F : dom  F --> A  <->  (/) : (/) --> A ) )
1711, 16mpbiri 224 . 2  |-  ( -.  ( R  We  A  /\  R Se  A )  ->  F : dom  F --> A )
1810, 17pm2.61i 156 1  |-  F : dom  F --> A
Colors of variables: wff set class
Syntax hints:   -. wn 3    /\ wa 358    = wceq 1642   A.wral 2619   E.wrex 2620   {crab 2623   _Vcvv 2864   (/)c0 3531   class class class wbr 4104    e. cmpt 4158   Se wse 4432    We wwe 4433   Ord word 4473   Oncon0 4474   dom cdm 4771   ran crn 4772   "cima 4774   -->wf 5333   iota_crio 6384  recscrecs 6474  OrdIsocoi 7314
This theorem is referenced by:  oismo  7345  cantnfle  7462  cantnflt  7463  cantnfres  7469  cantnfp1lem3  7472  cantnflem1b  7478  cantnflem1  7481  wemapwe  7490  cnfcomlem  7492  cnfcom  7493  cnfcom3lem  7496  cnfcom3  7497  hsmexlem1  8142  hsmexlem2  8143  fpwwe2lem8  8349
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1546  ax-5 1557  ax-17 1616  ax-9 1654  ax-8 1675  ax-13 1712  ax-14 1714  ax-6 1729  ax-7 1734  ax-11 1746  ax-12 1930  ax-ext 2339  ax-sep 4222  ax-nul 4230  ax-pow 4269  ax-pr 4295  ax-un 4594
This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-3or 935  df-3an 936  df-tru 1319  df-ex 1542  df-nf 1545  df-sb 1649  df-eu 2213  df-mo 2214  df-clab 2345  df-cleq 2351  df-clel 2354  df-nfc 2483  df-ne 2523  df-ral 2624  df-rex 2625  df-reu 2626  df-rmo 2627  df-rab 2628  df-v 2866  df-sbc 3068  df-csb 3158  df-dif 3231  df-un 3233  df-in 3235  df-ss 3242  df-pss 3244  df-nul 3532  df-if 3642  df-pw 3703  df-sn 3722  df-pr 3723  df-tp 3724  df-op 3725  df-uni 3909  df-iun 3988  df-br 4105  df-opab 4159  df-mpt 4160  df-tr 4195  df-eprel 4387  df-id 4391  df-po 4396  df-so 4397  df-fr 4434  df-se 4435  df-we 4436  df-ord 4477  df-on 4478  df-lim 4479  df-suc 4480  df-xp 4777  df-rel 4778  df-cnv 4779  df-co 4780  df-dm 4781  df-rn 4782  df-res 4783  df-ima 4784  df-iota 5301  df-fun 5339  df-fn 5340  df-f 5341  df-f1 5342  df-fo 5343  df-f1o 5344  df-fv 5345  df-riota 6391  df-recs 6475  df-oi 7315
  Copyright terms: Public domain W3C validator