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Theorem numnncl2 9752
Description: Closure for a decimal integer (zero units place). (Contributed by Mario Carneiro, 9-Mar-2015.)
Hypotheses
Ref Expression
numnncl2.1  |-  T  e.  NN
numnncl2.2  |-  A  e.  NN
Assertion
Ref Expression
numnncl2  |-  ( ( T  x.  A )  +  0 )  e.  NN

Proof of Theorem numnncl2
StepHypRef Expression
1 numnncl2.1 . . . . 5  |-  T  e.  NN
2 numnncl2.2 . . . . 5  |-  A  e.  NN
31, 2nnmulcli 9279 . . . 4  |-  ( T  x.  A )  e.  NN
43nncni 9267 . . 3  |-  ( T  x.  A )  e.  CC
54addridi 8432 . 2  |-  ( ( T  x.  A )  +  0 )  =  ( T  x.  A
)
65, 3eqeltri 2307 1  |-  ( ( T  x.  A )  +  0 )  e.  NN
Colors of variables: wff set class
Syntax hints:    e. wcel 2205  (class class class)co 6058   0cc0 8143    + caddc 8146    x. cmul 8148   NNcn 9257
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-ext 2216  ax-sep 4233  ax-cnex 8234  ax-resscn 8235  ax-1cn 8236  ax-1re 8237  ax-icn 8238  ax-addcl 8239  ax-addrcl 8240  ax-mulcl 8241  ax-mulcom 8244  ax-addass 8245  ax-mulass 8246  ax-distr 8247  ax-1rid 8250  ax-0id 8251  ax-cnre 8254
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1812  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ral 2527  df-rex 2528  df-rab 2531  df-v 2817  df-un 3218  df-in 3220  df-ss 3227  df-sn 3700  df-pr 3701  df-op 3703  df-uni 3920  df-int 3955  df-br 4115  df-iota 5317  df-fv 5365  df-ov 6061  df-inn 9258
This theorem is referenced by:  decnncl2  9753
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