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Theorem djulf1or 7122
Description: The left injection function on all sets is one to one and onto. (Contributed by BJ and Jim Kingdon, 22-Jun-2022.)
Assertion
Ref Expression
djulf1or  |-  (inl  |`  A ) : A -1-1-onto-> ( { (/) }  X.  A )

Proof of Theorem djulf1or
Dummy variable  x is distinct from all other variables.
StepHypRef Expression
1 0ex 4160 . 2  |-  (/)  e.  _V
2 df-inl 7113 . 2  |- inl  =  ( x  e.  _V  |->  <. (/)
,  x >. )
31, 2djuf1olemr 7120 1  |-  (inl  |`  A ) : A -1-1-onto-> ( { (/) }  X.  A )
Colors of variables: wff set class
Syntax hints:   (/)c0 3450   {csn 3622    X. cxp 4661    |` cres 4665   -1-1-onto->wf1o 5257  inlcinl 7111
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 615  ax-in2 616  ax-io 710  ax-5 1461  ax-7 1462  ax-gen 1463  ax-ie1 1507  ax-ie2 1508  ax-8 1518  ax-10 1519  ax-11 1520  ax-i12 1521  ax-bndl 1523  ax-4 1524  ax-17 1540  ax-i9 1544  ax-ial 1548  ax-i5r 1549  ax-13 2169  ax-14 2170  ax-ext 2178  ax-sep 4151  ax-nul 4159  ax-pow 4207  ax-pr 4242  ax-un 4468
This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1367  df-nf 1475  df-sb 1777  df-eu 2048  df-mo 2049  df-clab 2183  df-cleq 2189  df-clel 2192  df-nfc 2328  df-ral 2480  df-rex 2481  df-v 2765  df-sbc 2990  df-dif 3159  df-un 3161  df-in 3163  df-ss 3170  df-nul 3451  df-pw 3607  df-sn 3628  df-pr 3629  df-op 3631  df-uni 3840  df-br 4034  df-opab 4095  df-mpt 4096  df-id 4328  df-xp 4669  df-rel 4670  df-cnv 4671  df-co 4672  df-dm 4673  df-rn 4674  df-res 4675  df-iota 5219  df-fun 5260  df-fn 5261  df-f 5262  df-f1 5263  df-fo 5264  df-f1o 5265  df-fv 5266  df-1st 6198  df-2nd 6199  df-inl 7113
This theorem is referenced by:  inlresf1  7127  djuinr  7129  djuunr  7132  eldju  7134  eninl  7163
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