ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  nn0addcli GIF version

Theorem nn0addcli 9538
Description: Closure of addition of nonnegative integers, inference form. (Contributed by Raph Levien, 10-Dec-2002.)
Hypotheses
Ref Expression
nn0addcl.1 𝑀 ∈ ℕ0
nn0addcl.2 𝑁 ∈ ℕ0
Assertion
Ref Expression
nn0addcli (𝑀 + 𝑁) ∈ ℕ0

Proof of Theorem nn0addcli
StepHypRef Expression
1 nn0addcl.1 . 2 𝑀 ∈ ℕ0
2 nn0addcl.2 . 2 𝑁 ∈ ℕ0
3 nn0addcl 9536 . 2 ((𝑀 ∈ ℕ0𝑁 ∈ ℕ0) → (𝑀 + 𝑁) ∈ ℕ0)
41, 2, 3mp2an 426 1 (𝑀 + 𝑁) ∈ ℕ0
Colors of variables: wff set class
Syntax hints:  wcel 2205  (class class class)co 6052   + caddc 8135  0cn0 9501
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 4230  ax-cnex 8223  ax-resscn 8224  ax-1cn 8225  ax-1re 8226  ax-icn 8227  ax-addcl 8228  ax-addrcl 8229  ax-mulcl 8230  ax-addcom 8232  ax-addass 8234  ax-i2m1 8237  ax-0id 8240
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 3217  df-in 3219  df-ss 3226  df-sn 3697  df-pr 3698  df-op 3700  df-uni 3917  df-int 3952  df-br 4112  df-iota 5314  df-fv 5362  df-ov 6055  df-inn 9243  df-n0 9502
This theorem is referenced by:  numcl  9727  deccl  9729  numsucc  9754  modsubi  13125
  Copyright terms: Public domain W3C validator