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Theorem numsucc 9382
Description: The successor of a decimal integer (with carry). (Contributed by Mario Carneiro, 18-Feb-2014.)
Hypotheses
Ref Expression
numsucc.1  |-  Y  e. 
NN0
numsucc.2  |-  T  =  ( Y  +  1 )
numsucc.3  |-  A  e. 
NN0
numsucc.4  |-  ( A  +  1 )  =  B
numsucc.5  |-  N  =  ( ( T  x.  A )  +  Y
)
Assertion
Ref Expression
numsucc  |-  ( N  +  1 )  =  ( ( T  x.  B )  +  0 )

Proof of Theorem numsucc
StepHypRef Expression
1 numsucc.2 . . . . . . 7  |-  T  =  ( Y  +  1 )
2 numsucc.1 . . . . . . . 8  |-  Y  e. 
NN0
3 1nn0 9151 . . . . . . . 8  |-  1  e.  NN0
42, 3nn0addcli 9172 . . . . . . 7  |-  ( Y  +  1 )  e. 
NN0
51, 4eqeltri 2243 . . . . . 6  |-  T  e. 
NN0
65nn0cni 9147 . . . . 5  |-  T  e.  CC
76mulid1i 7922 . . . 4  |-  ( T  x.  1 )  =  T
87oveq2i 5864 . . 3  |-  ( ( T  x.  A )  +  ( T  x.  1 ) )  =  ( ( T  x.  A )  +  T
)
9 numsucc.3 . . . . 5  |-  A  e. 
NN0
109nn0cni 9147 . . . 4  |-  A  e.  CC
11 ax-1cn 7867 . . . 4  |-  1  e.  CC
126, 10, 11adddii 7930 . . 3  |-  ( T  x.  ( A  + 
1 ) )  =  ( ( T  x.  A )  +  ( T  x.  1 ) )
131eqcomi 2174 . . . 4  |-  ( Y  +  1 )  =  T
14 numsucc.5 . . . 4  |-  N  =  ( ( T  x.  A )  +  Y
)
155, 9, 2, 13, 14numsuc 9356 . . 3  |-  ( N  +  1 )  =  ( ( T  x.  A )  +  T
)
168, 12, 153eqtr4ri 2202 . 2  |-  ( N  +  1 )  =  ( T  x.  ( A  +  1 ) )
17 numsucc.4 . . 3  |-  ( A  +  1 )  =  B
1817oveq2i 5864 . 2  |-  ( T  x.  ( A  + 
1 ) )  =  ( T  x.  B
)
199, 3nn0addcli 9172 . . . 4  |-  ( A  +  1 )  e. 
NN0
2017, 19eqeltrri 2244 . . 3  |-  B  e. 
NN0
215, 20num0u 9353 . 2  |-  ( T  x.  B )  =  ( ( T  x.  B )  +  0 )
2216, 18, 213eqtri 2195 1  |-  ( N  +  1 )  =  ( ( T  x.  B )  +  0 )
Colors of variables: wff set class
Syntax hints:    = wceq 1348    e. wcel 2141  (class class class)co 5853   0cc0 7774   1c1 7775    + caddc 7777    x. cmul 7779   NN0cn0 9135
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 609  ax-in2 610  ax-io 704  ax-5 1440  ax-7 1441  ax-gen 1442  ax-ie1 1486  ax-ie2 1487  ax-8 1497  ax-10 1498  ax-11 1499  ax-i12 1500  ax-bndl 1502  ax-4 1503  ax-17 1519  ax-i9 1523  ax-ial 1527  ax-i5r 1528  ax-14 2144  ax-ext 2152  ax-sep 4107  ax-pow 4160  ax-pr 4194  ax-setind 4521  ax-cnex 7865  ax-resscn 7866  ax-1cn 7867  ax-1re 7868  ax-icn 7869  ax-addcl 7870  ax-addrcl 7871  ax-mulcl 7872  ax-addcom 7874  ax-mulcom 7875  ax-addass 7876  ax-mulass 7877  ax-distr 7878  ax-i2m1 7879  ax-1rid 7881  ax-0id 7882  ax-rnegex 7883  ax-cnre 7885
This theorem depends on definitions:  df-bi 116  df-3an 975  df-tru 1351  df-fal 1354  df-nf 1454  df-sb 1756  df-eu 2022  df-mo 2023  df-clab 2157  df-cleq 2163  df-clel 2166  df-nfc 2301  df-ne 2341  df-ral 2453  df-rex 2454  df-reu 2455  df-rab 2457  df-v 2732  df-sbc 2956  df-dif 3123  df-un 3125  df-in 3127  df-ss 3134  df-pw 3568  df-sn 3589  df-pr 3590  df-op 3592  df-uni 3797  df-int 3832  df-br 3990  df-opab 4051  df-id 4278  df-xp 4617  df-rel 4618  df-cnv 4619  df-co 4620  df-dm 4621  df-iota 5160  df-fun 5200  df-fv 5206  df-riota 5809  df-ov 5856  df-oprab 5857  df-mpo 5858  df-sub 8092  df-inn 8879  df-n0 9136
This theorem is referenced by:  decsucc  9383
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