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Theorem nn0pnfge0 9999
Description: If a number is a nonnegative integer or positive infinity, it is greater than or equal to 0. (Contributed by Alexander van der Vekens, 6-Jan-2018.)
Assertion
Ref Expression
nn0pnfge0 ((𝑁 ∈ ℕ0𝑁 = +∞) → 0 ≤ 𝑁)

Proof of Theorem nn0pnfge0
StepHypRef Expression
1 nn0ge0 9405 . 2 (𝑁 ∈ ℕ0 → 0 ≤ 𝑁)
2 0lepnf 9998 . . 3 0 ≤ +∞
3 breq2 4087 . . 3 (𝑁 = +∞ → (0 ≤ 𝑁 ↔ 0 ≤ +∞))
42, 3mpbiri 168 . 2 (𝑁 = +∞ → 0 ≤ 𝑁)
51, 4jaoi 721 1 ((𝑁 ∈ ℕ0𝑁 = +∞) → 0 ≤ 𝑁)
Colors of variables: wff set class
Syntax hints:  wi 4  wo 713   = wceq 1395  wcel 2200   class class class wbr 4083  0cc0 8010  +∞cpnf 8189  cle 8193  0cn0 9380
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-in1 617  ax-in2 618  ax-io 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-13 2202  ax-14 2203  ax-ext 2211  ax-sep 4202  ax-pow 4258  ax-pr 4293  ax-un 4524  ax-setind 4629  ax-cnex 8101  ax-resscn 8102  ax-1cn 8103  ax-1re 8104  ax-icn 8105  ax-addcl 8106  ax-addrcl 8107  ax-mulcl 8108  ax-i2m1 8115  ax-0lt1 8116  ax-0id 8118  ax-rnegex 8119  ax-pre-ltirr 8122  ax-pre-ltwlin 8123  ax-pre-lttrn 8124  ax-pre-ltadd 8126
This theorem depends on definitions:  df-bi 117  df-3an 1004  df-tru 1398  df-fal 1401  df-nf 1507  df-sb 1809  df-eu 2080  df-mo 2081  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-ne 2401  df-nel 2496  df-ral 2513  df-rex 2514  df-rab 2517  df-v 2801  df-dif 3199  df-un 3201  df-in 3203  df-ss 3210  df-pw 3651  df-sn 3672  df-pr 3673  df-op 3675  df-uni 3889  df-int 3924  df-br 4084  df-opab 4146  df-xp 4725  df-cnv 4727  df-iota 5278  df-fv 5326  df-ov 6010  df-pnf 8194  df-mnf 8195  df-xr 8196  df-ltxr 8197  df-le 8198  df-inn 9122  df-n0 9381
This theorem is referenced by: (None)
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