ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  infex2g GIF version

Theorem infex2g 7374
Description: Existence of infimum. (Contributed by Jim Kingdon, 1-Oct-2024.)
Assertion
Ref Expression
infex2g (𝐴𝐶 → inf(𝐵, 𝐴, 𝑅) ∈ V)

Proof of Theorem infex2g
StepHypRef Expression
1 df-inf 7325 . 2 inf(𝐵, 𝐴, 𝑅) = sup(𝐵, 𝐴, 𝑅)
2 supex2g 7373 . 2 (𝐴𝐶 → sup(𝐵, 𝐴, 𝑅) ∈ V)
31, 2eqeltrid 2325 1 (𝐴𝐶 → inf(𝐵, 𝐴, 𝑅) ∈ V)
Colors of variables:    wff set class
This proof depends on syntax axioms:  wi 4  wcel 2209  Vcvv 2821  ccnv 4773  supcsup 7322  infcinf 7323
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-sep 4249  ax-un 4578
This proof depends on definitions:  df-bi 117  df-tru 1405  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-rex 2534  df-rab 2537  df-v 2823  df-in 3226  df-ss 3233  df-uni 3936  df-sup 7324  df-inf 7325
This theorem is used by:  odzval  13020  ballotfilemi  13243
  Copyright terms: Public domain W3C validator