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| Mirrors > Home > ILE Home > Th. List > 2ne0 | Unicode version | ||
| Description: The number 2 is nonzero. (Contributed by NM, 9-Nov-2007.) |
| Ref | Expression |
|---|---|
| 2ne0 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2re 9384 |
. 2
| |
| 2 | 2pos 9405 |
. 2
| |
| 3 | 1, 2 | gt0ne0ii 8823 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4251 ax-pow 4313 ax-pr 4348 ax-un 4580 ax-setind 4686 ax-cnex 8277 ax-resscn 8278 ax-1cn 8279 ax-1re 8280 ax-icn 8281 ax-addcl 8282 ax-addrcl 8283 ax-mulcl 8284 ax-addcom 8286 ax-addass 8288 ax-i2m1 8291 ax-0lt1 8292 ax-0id 8294 ax-rnegex 8295 ax-pre-ltirr 8298 ax-pre-lttrn 8300 ax-pre-ltadd 8302 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-rab 2537 df-v 2823 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4132 df-opab 4194 df-xp 4782 df-iota 5340 df-fv 5388 df-ov 6091 df-pnf 8369 df-mnf 8370 df-ltxr 8372 df-2 9373 |
| This theorem is used by: 0ne2 9522 2cnne0 9526 2rene0 9527 zeo3 12661 evend2 12682 oddp1d2 12683 3lcm2e6woprm 12890 2logb9irrALT 16222 lgseisenlem1 16406 lgsquad2lem1 16417 lgsquad3 16420 m1lgs 16421 usgrexmpldifpr 16707 konigsberglem1 16946 apdiff 17316 qdiff 17317 |
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