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Theorem infeq1d 7353
Description: Equality deduction for infimum. (Contributed by AV, 2-Sep-2020.)
Hypothesis
Ref Expression
infeq1d.1 (𝜑 → 𝐵 = 𝐶)
Assertion
Ref Expression
infeq1d (𝜑 → inf(𝐵, 𝐴, 𝑅) = inf(𝐶, 𝐴, 𝑅))

Proof of Theorem infeq1d
StepHypRef Expression
1 infeq1d.1 . 2 (𝜑 → 𝐵 = 𝐶)
2 infeq1 7352 . 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 7324
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 7325  df-inf 7326
This theorem is used by:  infssfzcldc  10680  infssfzledc  10681  zsupssdc  10684  xrbdtri  12061  nnmindc  12830  nnminle  12831  lcmval  12860  lcmass  12882  odzval  13043  ballotfilemi  13295  ballotfi  13334  nninfdclemcl  13391  nninfdclemp1  13393  nninfdc  13396  bdmetval  15692  bdxmet  15693  qtopbasss  15713  hovera  15839  hoverb  15840  hoverlt1  15841  hovergt0  15842  ivthdich  15845  repiecele0  17241  repiecege0  17242  repiecef  17243
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