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Mirrors > Home > ILE Home > Th. List > 1nn0 | GIF version |
Description: 1 is a nonnegative integer. (Contributed by Raph Levien, 10-Dec-2002.) |
Ref | Expression |
---|---|
1nn0 | ⊢ 1 ∈ ℕ0 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1nn 8731 | . 2 ⊢ 1 ∈ ℕ | |
2 | 1 | nnnn0i 8985 | 1 ⊢ 1 ∈ ℕ0 |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 1480 1c1 7621 ℕ0cn0 8977 |
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-1re 7714 |
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-ral 2421 df-v 2688 df-un 3075 df-in 3077 df-ss 3084 df-int 3772 df-inn 8721 df-n0 8978 |
This theorem is referenced by: peano2nn0 9017 deccl 9196 10nn0 9199 numsucc 9221 numadd 9228 numaddc 9229 11multnc 9249 6p5lem 9251 6p6e12 9255 7p5e12 9258 8p4e12 9263 9p2e11 9268 9p3e12 9269 10p10e20 9276 4t4e16 9280 5t2e10 9281 5t4e20 9283 6t3e18 9286 6t4e24 9287 7t3e21 9291 7t4e28 9292 8t3e24 9297 9t3e27 9304 9t9e81 9310 nn01to3 9409 elfzom1elp1fzo 9979 fzo0sn0fzo1 9998 1tonninf 10213 expn1ap0 10303 nn0expcl 10307 sqval 10351 sq10 10459 nn0opthlem1d 10466 fac2 10477 bccl 10513 hashsng 10544 1elfz0hash 10552 bcxmas 11258 arisum 11267 geoisum1 11288 geoisum1c 11289 cvgratnnlemsumlt 11297 mertenslem2 11305 ege2le3 11377 ef4p 11400 efgt1p2 11401 efgt1p 11402 sin01gt0 11468 dvds1 11551 3dvds2dec 11563 ennnfonelemhom 11928 dsndx 12117 dsid 12118 dsslid 12119 dveflem 12855 1kp2ke3k 12936 ex-exp 12939 ex-fac 12940 isomninnlem 13225 trilpolemisumle 13231 |
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