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Theorem pr01ssre 29570
Description: The range of the indicator function is a subset of 
RR. (Contributed by Thierry Arnoux, 14-Aug-2017.)
Assertion
Ref Expression
pr01ssre  |-  { 0 ,  1 }  C_  RR

Proof of Theorem pr01ssre
StepHypRef Expression
1 0re 10040 . 2  |-  0  e.  RR
2 1re 10039 . 2  |-  1  e.  RR
3 prssi 4353 . 2  |-  ( ( 0  e.  RR  /\  1  e.  RR )  ->  { 0 ,  1 }  C_  RR )
41, 2, 3mp2an 708 1  |-  { 0 ,  1 }  C_  RR
Colors of variables: wff setvar class
Syntax hints:    e. wcel 1990    C_ wss 3574   {cpr 4179   RRcr 9935   0cc0 9936   1c1 9937
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-1cn 9994  ax-icn 9995  ax-addcl 9996  ax-addrcl 9997  ax-mulcl 9998  ax-mulrcl 9999  ax-i2m1 10004  ax-1ne0 10005  ax-rnegex 10007  ax-rrecex 10008  ax-cnre 10009
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-br 4654  df-iota 5851  df-fv 5896  df-ov 6653
This theorem is referenced by:  fprodex01  29571  indsum  30083  indsumin  30084  circlemethnat  30719
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