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Theorem reapirr 8596
Description: Real apartness is irreflexive. Part of Definition 11.2.7(v) of [HoTT], p. (varies). Beyond the development of # itself, proofs should use apirr 8624 instead. (Contributed by Jim Kingdon, 26-Jan-2020.)
Assertion
Ref Expression
reapirr  |-  ( A  e.  RR  ->  -.  A #  A )

Proof of Theorem reapirr
StepHypRef Expression
1 ltnr 8096 . 2  |-  ( A  e.  RR  ->  -.  A  <  A )
2 reapval 8595 . . . 4  |-  ( ( A  e.  RR  /\  A  e.  RR )  ->  ( A #  A  <->  ( A  < 
A  \/  A  < 
A ) ) )
32anidms 397 . . 3  |-  ( A  e.  RR  ->  ( A #  A 
<->  ( A  <  A  \/  A  <  A ) ) )
4 oridm 758 . . 3  |-  ( ( A  <  A  \/  A  <  A )  <->  A  <  A )
53, 4bitrdi 196 . 2  |-  ( A  e.  RR  ->  ( A #  A 
<->  A  <  A ) )
61, 5mtbird 674 1  |-  ( A  e.  RR  ->  -.  A #  A )
Colors of variables: wff set class
Syntax hints:   -. wn 3    -> wi 4    <-> wb 105    \/ wo 709    e. wcel 2164   class class class wbr 4029   RRcr 7871    < clt 8054   # creap 8593
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 1458  ax-7 1459  ax-gen 1460  ax-ie1 1504  ax-ie2 1505  ax-8 1515  ax-10 1516  ax-11 1517  ax-i12 1518  ax-bndl 1520  ax-4 1521  ax-17 1537  ax-i9 1541  ax-ial 1545  ax-i5r 1546  ax-13 2166  ax-14 2167  ax-ext 2175  ax-sep 4147  ax-pow 4203  ax-pr 4238  ax-un 4464  ax-setind 4569  ax-cnex 7963  ax-resscn 7964  ax-pre-ltirr 7984
This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1367  df-fal 1370  df-nf 1472  df-sb 1774  df-eu 2045  df-mo 2046  df-clab 2180  df-cleq 2186  df-clel 2189  df-nfc 2325  df-ne 2365  df-nel 2460  df-ral 2477  df-rex 2478  df-rab 2481  df-v 2762  df-dif 3155  df-un 3157  df-in 3159  df-ss 3166  df-pw 3603  df-sn 3624  df-pr 3625  df-op 3627  df-uni 3836  df-br 4030  df-opab 4091  df-xp 4665  df-pnf 8056  df-mnf 8057  df-ltxr 8059  df-reap 8594
This theorem is referenced by:  apirr  8624
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