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Mirrors > Home > ILE Home > Th. List > nnre | GIF version |
Description: A positive integer is a real number. (Contributed by NM, 18-Aug-1999.) |
Ref | Expression |
---|---|
nnre | ⊢ (𝐴 ∈ ℕ → 𝐴 ∈ ℝ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nnssre 7918 | . 2 ⊢ ℕ ⊆ ℝ | |
2 | 1 | sseli 2941 | 1 ⊢ (𝐴 ∈ ℕ → 𝐴 ∈ ℝ) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∈ wcel 1393 ℝcr 6888 ℕcn 7914 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 ax-io 630 ax-5 1336 ax-7 1337 ax-gen 1338 ax-ie1 1382 ax-ie2 1383 ax-8 1395 ax-10 1396 ax-11 1397 ax-i12 1398 ax-bndl 1399 ax-4 1400 ax-17 1419 ax-i9 1423 ax-ial 1427 ax-i5r 1428 ax-ext 2022 ax-sep 3875 ax-cnex 6975 ax-resscn 6976 ax-1re 6978 ax-addrcl 6981 |
This theorem depends on definitions: df-bi 110 df-tru 1246 df-nf 1350 df-sb 1646 df-clab 2027 df-cleq 2033 df-clel 2036 df-nfc 2167 df-ral 2311 df-v 2559 df-in 2924 df-ss 2931 df-int 3616 df-inn 7915 |
This theorem is referenced by: nnrei 7923 peano2nn 7926 nn1suc 7933 nnge1 7937 nnle1eq1 7938 nngt0 7939 nnnlt1 7940 nnap0 7943 nn2ge 7946 nn1gt1 7947 nndivre 7949 nnrecgt0 7951 nnsub 7952 arch 8178 nnrecl 8179 bndndx 8180 nn0ge0 8207 0mnnnnn0 8214 nnnegz 8248 elnnz 8255 elz2 8312 gtndiv 8335 prime 8337 btwnz 8357 qre 8560 nnrp 8592 fzo1fzo0n0 9039 elfzo0le 9041 fzonmapblen 9043 ubmelfzo 9056 fzonn0p1p1 9069 elfzom1p1elfzo 9070 ubmelm1fzo 9082 subfzo0 9097 adddivflid 9134 flltdivnn0lt 9146 intfracq 9162 flqdiv 9163 nnlesq 9356 caucvgre 9580 sqrt2irr 9878 |
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