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Mirrors > Home > ILE Home > Th. List > 0nn0 | GIF version |
Description: 0 is a nonnegative integer. (Contributed by Raph Levien, 10-Dec-2002.) |
Ref | Expression |
---|---|
0nn0 | ⊢ 0 ∈ ℕ0 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2139 | . 2 ⊢ 0 = 0 | |
2 | elnn0 8986 | . . . 4 ⊢ (0 ∈ ℕ0 ↔ (0 ∈ ℕ ∨ 0 = 0)) | |
3 | 2 | biimpri 132 | . . 3 ⊢ ((0 ∈ ℕ ∨ 0 = 0) → 0 ∈ ℕ0) |
4 | 3 | olcs 725 | . 2 ⊢ (0 = 0 → 0 ∈ ℕ0) |
5 | 1, 4 | ax-mp 5 | 1 ⊢ 0 ∈ ℕ0 |
Colors of variables: wff set class |
Syntax hints: ∨ wo 697 = wceq 1331 ∈ wcel 1480 0cc0 7627 ℕcn 8727 ℕ0cn0 8984 |
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-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 ax-1cn 7720 ax-icn 7722 ax-addcl 7723 ax-mulcl 7725 ax-i2m1 7732 |
This theorem depends on definitions: df-bi 116 df-tru 1334 df-nf 1437 df-sb 1736 df-clab 2126 df-cleq 2132 df-clel 2135 df-nfc 2270 df-v 2688 df-un 3075 df-sn 3533 df-n0 8985 |
This theorem is referenced by: 0xnn0 9053 elnn0z 9074 nn0ind-raph 9175 10nn0 9206 declei 9224 numlti 9225 nummul1c 9237 decaddc2 9244 decrmanc 9245 decrmac 9246 decaddm10 9247 decaddi 9248 decaddci 9249 decaddci2 9250 decmul1 9252 decmulnc 9255 6p5e11 9261 7p4e11 9264 8p3e11 9269 9p2e11 9275 10p10e20 9283 fz01or 9898 0elfz 9905 4fvwrd4 9924 fvinim0ffz 10025 0tonninf 10219 exple1 10356 sq10 10466 bc0k 10509 bcn1 10511 bccl 10520 fihasheq0 10547 fsumnn0cl 11179 binom 11260 bcxmas 11265 isumnn0nn 11269 geoserap 11283 ef0lem 11373 ege2le3 11384 ef4p 11407 efgt1p2 11408 efgt1p 11409 nn0o 11611 ndvdssub 11634 gcdval 11655 gcdcl 11662 dfgcd3 11705 nn0seqcvgd 11729 algcvg 11736 eucalg 11747 lcmcl 11760 pw2dvdslemn 11850 ennnfonelemj0 11921 ennnfonelem0 11925 ennnfonelem1 11927 dveflem 12865 pilem3 12874 1kp2ke3k 12946 ex-fac 12950 isomninnlem 13235 |
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