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Theorem infeq1d 7352
Description: Equality deduction for infimum. (Contributed by AV, 2-Sep-2020.)
Hypothesis
Ref Expression
infeq1d.1 (𝜑𝐵 = 𝐶)
Assertion
Ref Expression
infeq1d (𝜑 → inf(𝐵, 𝐴, 𝑅) = inf(𝐶, 𝐴, 𝑅))

Proof of Theorem infeq1d
StepHypRef Expression
1 infeq1d.1 . 2 (𝜑𝐵 = 𝐶)
2 infeq1 7351 . 2 (𝐵 = 𝐶 → inf(𝐵, 𝐴, 𝑅) = inf(𝐶, 𝐴, 𝑅))
31, 2syl 14 1 (𝜑 → inf(𝐵, 𝐴, 𝑅) = inf(𝐶, 𝐴, 𝑅))
Colors of variables:    wff set class
This proof depends on syntax axioms:  wi 4   = wceq 1402  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-ext 2220
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-ral 2533  df-rex 2534  df-rab 2537  df-uni 3936  df-sup 7324  df-inf 7325
This theorem is used by:  infssfzcldc  10669  infssfzledc  10670  zsupssdc  10673  xrbdtri  12042  nnmindc  12811  nnminle  12812  lcmval  12841  lcmass  12863  odzval  13020  ballotfilemi  13243  ballotfi  13282  nninfdclemcl  13339  nninfdclemp1  13341  nninfdc  13344  bdmetval  15601  bdxmet  15602  qtopbasss  15622  hovera  15748  hoverb  15749  hoverlt1  15750  hovergt0  15751  ivthdich  15754  repiecele0  17075  repiecege0  17076  repiecef  17077
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