| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > gt0ne0ii | Structured version Visualization version GIF version | ||
| Description: Positive implies nonzero. (Contributed by NM, 15-May-1999.) |
| Ref | Expression |
|---|---|
| lt2.1 | ⊢ 𝐴 ∈ ℝ |
| gt0ne0i.2 | ⊢ 0 < 𝐴 |
| Ref | Expression |
|---|---|
| gt0ne0ii | ⊢ 𝐴 ≠ 0 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | gt0ne0i.2 | . 2 ⊢ 0 < 𝐴 | |
| 2 | lt2.1 | . . 3 ⊢ 𝐴 ∈ ℝ | |
| 3 | 2 | gt0ne0i 11891 | . 2 ⊢ (0 < 𝐴 → 𝐴 ≠ 0) |
| 4 | 1, 3 | ax-mp 5 | 1 ⊢ 𝐴 ≠ 0 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∈ wcel 2147 ≠ wne 2959 class class class wbr 5108 ℝcr 11238 0cc0 11239 < clt 11382 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5255 ax-nul 5266 ax-pow 5334 ax-pr 5398 ax-un 7783 ax-resscn 11296 ax-1cn 11297 ax-addrcl 11300 ax-rnegex 11310 ax-cnre 11312 ax-pre-lttri 11313 ax-pre-lttrn 11314 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-br 5109 df-opab 5174 df-mpt 5193 df-id 5553 df-po 5566 df-so 5567 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 df-iota 6520 df-fun 6568 df-fn 6569 df-f 6570 df-f1 6571 df-fo 6572 df-f1o 6573 df-fv 6574 df-er 8755 df-en 9012 df-dom 9013 df-sdom 9014 df-pnf 11384 df-mnf 11385 df-ltxr 11387 |
| This theorem is used by: eqneg 12077 recgt0ii 12263 nnne0i 12418 8th4div3 12606 halfpm6th 12608 5recm6rec 13004 0.999... 16094 bpoly2 16267 bpoly3 16268 fsumcube 16270 efi4p 16349 resin4p 16350 recos4p 16351 ef01bndlem 16396 cos2bnd 16400 sincos2sgn 16406 ene0 16421 pine0 26846 sinhalfpilem 26849 tan4thpi 26900 sincos6thpi 26901 sineq0 26909 coseq1 26910 cosne0 26914 efif1olem2 26928 efif1olem4 26930 eflogeq 26987 logf1o2 27035 cxpsqrt 27088 root1eq1 27140 sqrt2cxp2logb9e3 27184 ang180lem1 27194 ang180lem2 27195 2lgsoddprmlem1 27792 2lgsoddprmlem2 27793 chebbnd1lem3 27855 chebbnd1 27856 dp2cl 33542 dp2ltc 33549 dpfrac1 33554 dpmul4 33576 subfaclim 36161 bj-pinftynminfty 38416 taupilem1 38510 acos1half 43675 proot1ex 44459 coseq0 47147 sinaover2ne0 47151 wallispi 47353 stirlinglem3 47359 stirlinglem15 47371 dirkertrigeqlem2 47382 dirkertrigeqlem3 47383 dirkertrigeq 47384 dirkeritg 47385 dirkercncflem1 47386 fourierdlem24 47414 fourierdlem95 47484 fourierswlem 47513 goldrarr 48201 goldrasin 48202 goldrapos 48203 goldracos5teq 48205 goldratmolem4 48208 |
| Copyright terms: Public domain | W3C validator |