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Theorem posref 17563
Description: A poset ordering is reflexive. (Contributed by NM, 11-Sep-2011.) (Proof shortened by OpenAI, 25-Mar-2020.)
Hypotheses
Ref Expression
posi.b 𝐵 = (Base‘𝐾)
posi.l = (le‘𝐾)
Assertion
Ref Expression
posref ((𝐾 ∈ Poset ∧ 𝑋𝐵) → 𝑋 𝑋)

Proof of Theorem posref
StepHypRef Expression
1 posprs 17561 . 2 (𝐾 ∈ Poset → 𝐾 ∈ Proset )
2 posi.b . . 3 𝐵 = (Base‘𝐾)
3 posi.l . . 3 = (le‘𝐾)
42, 3prsref 17544 . 2 ((𝐾 ∈ Proset ∧ 𝑋𝐵) → 𝑋 𝑋)
51, 4sylan 582 1 ((𝐾 ∈ Poset ∧ 𝑋𝐵) → 𝑋 𝑋)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 398   = wceq 1537  wcel 2114   class class class wbr 5068  cfv 6357  Basecbs 16485  lecple 16574   Proset cproset 17538  Posetcpo 17552
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2795  ax-nul 5212
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2802  df-cleq 2816  df-clel 2895  df-nfc 2965  df-ral 3145  df-rex 3146  df-rab 3149  df-v 3498  df-sbc 3775  df-dif 3941  df-un 3943  df-in 3945  df-ss 3954  df-nul 4294  df-if 4470  df-sn 4570  df-pr 4572  df-op 4576  df-uni 4841  df-br 5069  df-iota 6316  df-fv 6365  df-proset 17540  df-poset 17558
This theorem is referenced by:  posasymb  17564  pleval2  17577  pltval3  17579  pospo  17585  lublecllem  17600  latref  17665  odupos  17747  omndmul2  30715  omndmul  30717  gsumle  30727  archirngz  30820  cvrnbtwn2  36413  cvrnbtwn3  36414  cvrnbtwn4  36417  cvrcmp  36421  llncmp  36660  lplncmp  36700  lvolcmp  36755
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