Users' Mathboxes Mathbox for Thierry Arnoux < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >   Mathboxes  >  tlt2 Structured version   Visualization version   Unicode version

Theorem tlt2 29664
Description: In a Toset, two elements must compare. (Contributed by Thierry Arnoux, 13-Apr-2018.)
Hypotheses
Ref Expression
tlt2.b  |-  B  =  ( Base `  K
)
tlt2.e  |-  .<_  =  ( le `  K )
tlt2.l  |-  .<  =  ( lt `  K )
Assertion
Ref Expression
tlt2  |-  ( ( K  e. Toset  /\  X  e.  B  /\  Y  e.  B )  ->  ( X  .<_  Y  \/  Y  .<  X ) )

Proof of Theorem tlt2
StepHypRef Expression
1 exmidd 432 . 2  |-  ( ( K  e. Toset  /\  X  e.  B  /\  Y  e.  B )  ->  ( X  .<_  Y  \/  -.  X  .<_  Y ) )
2 tlt2.b . . . . 5  |-  B  =  ( Base `  K
)
3 tlt2.e . . . . 5  |-  .<_  =  ( le `  K )
4 tlt2.l . . . . 5  |-  .<  =  ( lt `  K )
52, 3, 4tltnle 29662 . . . 4  |-  ( ( K  e. Toset  /\  Y  e.  B  /\  X  e.  B )  ->  ( Y  .<  X  <->  -.  X  .<_  Y ) )
653com23 1271 . . 3  |-  ( ( K  e. Toset  /\  X  e.  B  /\  Y  e.  B )  ->  ( Y  .<  X  <->  -.  X  .<_  Y ) )
76orbi2d 738 . 2  |-  ( ( K  e. Toset  /\  X  e.  B  /\  Y  e.  B )  ->  (
( X  .<_  Y  \/  Y  .<  X )  <->  ( X  .<_  Y  \/  -.  X  .<_  Y ) ) )
81, 7mpbird 247 1  |-  ( ( K  e. Toset  /\  X  e.  B  /\  Y  e.  B )  ->  ( X  .<_  Y  \/  Y  .<  X ) )
Colors of variables: wff setvar class
Syntax hints:   -. wn 3    -> wi 4    <-> wb 196    \/ wo 383    /\ w3a 1037    = wceq 1483    e. wcel 1990   class class class wbr 4653   ` cfv 5888   Basecbs 15857   lecple 15948   ltcplt 16941  Tosetctos 17033
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-sep 4781  ax-nul 4789  ax-pr 4906
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-eu 2474  df-mo 2475  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-sbc 3436  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-opab 4713  df-mpt 4730  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-iota 5851  df-fun 5890  df-fv 5896  df-preset 16928  df-poset 16946  df-plt 16958  df-toset 17034
This theorem is referenced by:  tlt3  29665  archirngz  29743  archiabllem2a  29748
  Copyright terms: Public domain W3C validator