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Theorem ex-ceil 13273
Description: Example for df-ceil 10163. (Contributed by AV, 4-Sep-2021.)
Assertion
Ref Expression
ex-ceil  |-  ( ( `  ( 3  /  2
) )  =  2  /\  ( `  -u (
3  /  2 ) )  =  -u 1
)

Proof of Theorem ex-ceil
StepHypRef Expression
1 ex-fl 13272 . 2  |-  ( ( |_ `  ( 3  /  2 ) )  =  1  /\  ( |_ `  -u ( 3  / 
2 ) )  = 
-u 2 )
2 3z 9190 . . . . . . 7  |-  3  e.  ZZ
3 2nn 8988 . . . . . . 7  |-  2  e.  NN
4 znq 9526 . . . . . . 7  |-  ( ( 3  e.  ZZ  /\  2  e.  NN )  ->  ( 3  /  2
)  e.  QQ )
52, 3, 4mp2an 423 . . . . . 6  |-  ( 3  /  2 )  e.  QQ
6 qnegcl 9538 . . . . . 6  |-  ( ( 3  /  2 )  e.  QQ  ->  -u (
3  /  2 )  e.  QQ )
75, 6ax-mp 5 . . . . 5  |-  -u (
3  /  2 )  e.  QQ
8 ceilqval 10198 . . . . 5  |-  ( -u ( 3  /  2
)  e.  QQ  ->  ( `  -u ( 3  / 
2 ) )  = 
-u ( |_ `  -u -u ( 3  /  2
) ) )
97, 8ax-mp 5 . . . 4  |-  ( `  -u (
3  /  2 ) )  =  -u ( |_ `  -u -u ( 3  / 
2 ) )
10 qcn 9536 . . . . . . . . . . 11  |-  ( ( 3  /  2 )  e.  QQ  ->  (
3  /  2 )  e.  CC )
115, 10ax-mp 5 . . . . . . . . . 10  |-  ( 3  /  2 )  e.  CC
1211negnegi 8139 . . . . . . . . 9  |-  -u -u (
3  /  2 )  =  ( 3  / 
2 )
1312eqcomi 2161 . . . . . . . 8  |-  ( 3  /  2 )  = 
-u -u ( 3  / 
2 )
1413fveq2i 5470 . . . . . . 7  |-  ( |_
`  ( 3  / 
2 ) )  =  ( |_ `  -u -u (
3  /  2 ) )
1514eqeq1i 2165 . . . . . 6  |-  ( ( |_ `  ( 3  /  2 ) )  =  1  <->  ( |_ `  -u -u ( 3  / 
2 ) )  =  1 )
1615biimpi 119 . . . . 5  |-  ( ( |_ `  ( 3  /  2 ) )  =  1  ->  ( |_ `  -u -u ( 3  / 
2 ) )  =  1 )
1716negeqd 8064 . . . 4  |-  ( ( |_ `  ( 3  /  2 ) )  =  1  ->  -u ( |_ `  -u -u ( 3  / 
2 ) )  = 
-u 1 )
189, 17syl5eq 2202 . . 3  |-  ( ( |_ `  ( 3  /  2 ) )  =  1  ->  ( `  -u ( 3  /  2
) )  =  -u
1 )
19 ceilqval 10198 . . . . 5  |-  ( ( 3  /  2 )  e.  QQ  ->  ( `  ( 3  /  2
) )  =  -u ( |_ `  -u (
3  /  2 ) ) )
205, 19ax-mp 5 . . . 4  |-  ( `  (
3  /  2 ) )  =  -u ( |_ `  -u ( 3  / 
2 ) )
21 negeq 8062 . . . . 5  |-  ( ( |_ `  -u (
3  /  2 ) )  =  -u 2  -> 
-u ( |_ `  -u ( 3  /  2
) )  =  -u -u 2 )
22 2cn 8898 . . . . . 6  |-  2  e.  CC
2322negnegi 8139 . . . . 5  |-  -u -u 2  =  2
2421, 23eqtrdi 2206 . . . 4  |-  ( ( |_ `  -u (
3  /  2 ) )  =  -u 2  -> 
-u ( |_ `  -u ( 3  /  2
) )  =  2 )
2520, 24syl5eq 2202 . . 3  |-  ( ( |_ `  -u (
3  /  2 ) )  =  -u 2  ->  ( `  ( 3  /  2 ) )  =  2 )
2618, 25anim12ci 337 . 2  |-  ( ( ( |_ `  (
3  /  2 ) )  =  1  /\  ( |_ `  -u (
3  /  2 ) )  =  -u 2
)  ->  ( ( `  ( 3  /  2
) )  =  2  /\  ( `  -u (
3  /  2 ) )  =  -u 1
) )
271, 26ax-mp 5 1  |-  ( ( `  ( 3  /  2
) )  =  2  /\  ( `  -u (
3  /  2 ) )  =  -u 1
)
Colors of variables: wff set class
Syntax hints:    /\ wa 103    = wceq 1335    e. wcel 2128   ` cfv 5169  (class class class)co 5821   CCcc 7724   1c1 7727   -ucneg 8041    / cdiv 8539   NNcn 8827   2c2 8878   3c3 8879   ZZcz 9161   QQcq 9521   |_cfl 10160  ⌈cceil 10161
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 604  ax-in2 605  ax-io 699  ax-5 1427  ax-7 1428  ax-gen 1429  ax-ie1 1473  ax-ie2 1474  ax-8 1484  ax-10 1485  ax-11 1486  ax-i12 1487  ax-bndl 1489  ax-4 1490  ax-17 1506  ax-i9 1510  ax-ial 1514  ax-i5r 1515  ax-13 2130  ax-14 2131  ax-ext 2139  ax-sep 4082  ax-pow 4135  ax-pr 4169  ax-un 4393  ax-setind 4495  ax-cnex 7817  ax-resscn 7818  ax-1cn 7819  ax-1re 7820  ax-icn 7821  ax-addcl 7822  ax-addrcl 7823  ax-mulcl 7824  ax-mulrcl 7825  ax-addcom 7826  ax-mulcom 7827  ax-addass 7828  ax-mulass 7829  ax-distr 7830  ax-i2m1 7831  ax-0lt1 7832  ax-1rid 7833  ax-0id 7834  ax-rnegex 7835  ax-precex 7836  ax-cnre 7837  ax-pre-ltirr 7838  ax-pre-ltwlin 7839  ax-pre-lttrn 7840  ax-pre-apti 7841  ax-pre-ltadd 7842  ax-pre-mulgt0 7843  ax-pre-mulext 7844  ax-arch 7845
This theorem depends on definitions:  df-bi 116  df-3or 964  df-3an 965  df-tru 1338  df-fal 1341  df-nf 1441  df-sb 1743  df-eu 2009  df-mo 2010  df-clab 2144  df-cleq 2150  df-clel 2153  df-nfc 2288  df-ne 2328  df-nel 2423  df-ral 2440  df-rex 2441  df-reu 2442  df-rmo 2443  df-rab 2444  df-v 2714  df-sbc 2938  df-csb 3032  df-dif 3104  df-un 3106  df-in 3108  df-ss 3115  df-pw 3545  df-sn 3566  df-pr 3567  df-op 3569  df-uni 3773  df-int 3808  df-iun 3851  df-br 3966  df-opab 4026  df-mpt 4027  df-id 4253  df-po 4256  df-iso 4257  df-xp 4591  df-rel 4592  df-cnv 4593  df-co 4594  df-dm 4595  df-rn 4596  df-res 4597  df-ima 4598  df-iota 5134  df-fun 5171  df-fn 5172  df-f 5173  df-fv 5177  df-riota 5777  df-ov 5824  df-oprab 5825  df-mpo 5826  df-1st 6085  df-2nd 6086  df-pnf 7908  df-mnf 7909  df-xr 7910  df-ltxr 7911  df-le 7912  df-sub 8042  df-neg 8043  df-reap 8444  df-ap 8451  df-div 8540  df-inn 8828  df-2 8886  df-3 8887  df-4 8888  df-n0 9085  df-z 9162  df-q 9522  df-rp 9554  df-fl 10162  df-ceil 10163
This theorem is referenced by: (None)
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