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Theorem left0s 34075
Description: The left set of 0s is empty. (Contributed by Scott Fenton, 20-Aug-2024.)
Assertion
Ref Expression
left0s ( L ‘ 0s ) = ∅

Proof of Theorem left0s
StepHypRef Expression
1 leftssold 34061 . 2 ( L ‘ 0s ) ⊆ ( O ‘( bday ‘ 0s ))
2 bday0s 34022 . . . 4 ( bday ‘ 0s ) = ∅
32fveq2i 6777 . . 3 ( O ‘( bday ‘ 0s )) = ( O ‘∅)
4 old0 34043 . . 3 ( O ‘∅) = ∅
53, 4eqtri 2766 . 2 ( O ‘( bday ‘ 0s )) = ∅
6 sseq0 4333 . 2 ((( L ‘ 0s ) ⊆ ( O ‘( bday ‘ 0s )) ∧ ( O ‘( bday ‘ 0s )) = ∅) → ( L ‘ 0s ) = ∅)
71, 5, 6mp2an 689 1 ( L ‘ 0s ) = ∅
Colors of variables: wff setvar class
Syntax hints:   = wceq 1539  wss 3887  c0 4256  cfv 6433   bday cbday 33845   0s c0s 34016   O cold 34027   L cleft 34029
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2709  ax-rep 5209  ax-sep 5223  ax-nul 5230  ax-pr 5352  ax-un 7588
This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3or 1087  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1783  df-nf 1787  df-sb 2068  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2816  df-nfc 2889  df-ne 2944  df-ral 3069  df-rex 3070  df-rmo 3071  df-reu 3072  df-rab 3073  df-v 3434  df-sbc 3717  df-csb 3833  df-dif 3890  df-un 3892  df-in 3894  df-ss 3904  df-pss 3906  df-nul 4257  df-if 4460  df-pw 4535  df-sn 4562  df-pr 4564  df-tp 4566  df-op 4568  df-uni 4840  df-int 4880  df-iun 4926  df-br 5075  df-opab 5137  df-mpt 5158  df-tr 5192  df-id 5489  df-eprel 5495  df-po 5503  df-so 5504  df-fr 5544  df-we 5546  df-xp 5595  df-rel 5596  df-cnv 5597  df-co 5598  df-dm 5599  df-rn 5600  df-res 5601  df-ima 5602  df-pred 6202  df-ord 6269  df-on 6270  df-suc 6272  df-iota 6391  df-fun 6435  df-fn 6436  df-f 6437  df-f1 6438  df-fo 6439  df-f1o 6440  df-fv 6441  df-riota 7232  df-ov 7278  df-oprab 7279  df-mpo 7280  df-2nd 7832  df-frecs 8097  df-wrecs 8128  df-recs 8202  df-1o 8297  df-2o 8298  df-no 33846  df-slt 33847  df-bday 33848  df-sslt 33976  df-scut 33978  df-0s 34018  df-made 34031  df-old 34032  df-left 34034
This theorem is referenced by:  negs0s  34124  addsid1  34127
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