ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  gtned Unicode version

Theorem gtned 8007
Description: 'Less than' implies not equal. See also gtapd 8531 which is the same but for apartness. (Contributed by Mario Carneiro, 27-May-2016.)
Hypotheses
Ref Expression
ltd.1  |-  ( ph  ->  A  e.  RR )
ltned.2  |-  ( ph  ->  A  <  B )
Assertion
Ref Expression
gtned  |-  ( ph  ->  B  =/=  A )

Proof of Theorem gtned
StepHypRef Expression
1 ltd.1 . 2  |-  ( ph  ->  A  e.  RR )
2 ltned.2 . 2  |-  ( ph  ->  A  <  B )
3 ltne 7979 . 2  |-  ( ( A  e.  RR  /\  A  <  B )  ->  B  =/=  A )
41, 2, 3syl2anc 409 1  |-  ( ph  ->  B  =/=  A )
Colors of variables: wff set class
Syntax hints:    -> wi 4    e. wcel 2136    =/= wne 2335   class class class wbr 3981   RRcr 7748    < clt 7929
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 604  ax-in2 605  ax-io 699  ax-5 1435  ax-7 1436  ax-gen 1437  ax-ie1 1481  ax-ie2 1482  ax-8 1492  ax-10 1493  ax-11 1494  ax-i12 1495  ax-bndl 1497  ax-4 1498  ax-17 1514  ax-i9 1518  ax-ial 1522  ax-i5r 1523  ax-13 2138  ax-14 2139  ax-ext 2147  ax-sep 4099  ax-pow 4152  ax-pr 4186  ax-un 4410  ax-setind 4513  ax-cnex 7840  ax-resscn 7841  ax-pre-ltirr 7861
This theorem depends on definitions:  df-bi 116  df-3an 970  df-tru 1346  df-fal 1349  df-nf 1449  df-sb 1751  df-eu 2017  df-mo 2018  df-clab 2152  df-cleq 2158  df-clel 2161  df-nfc 2296  df-ne 2336  df-nel 2431  df-ral 2448  df-rex 2449  df-rab 2452  df-v 2727  df-dif 3117  df-un 3119  df-in 3121  df-ss 3128  df-pw 3560  df-sn 3581  df-pr 3582  df-op 3584  df-uni 3789  df-br 3982  df-opab 4043  df-xp 4609  df-pnf 7931  df-mnf 7932  df-ltxr 7934
This theorem is referenced by:  ltned  8008  seq3f1olemqsumkj  10429  nn0opthlem2d  10630  zfz1isolemiso  10748  ennnfonelemim  12353  logbgcd1irr  13485  logbgcd1irraplemexp  13486
  Copyright terms: Public domain W3C validator