| 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 11755 | . 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 2142 ≠ wne 2957 class class class wbr 5108 ℝcr 11105 0cc0 11106 < clt 11249 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5256 ax-nul 5268 ax-pow 5335 ax-pr 5403 ax-un 7734 ax-resscn 11163 ax-1cn 11164 ax-addrcl 11167 ax-rnegex 11177 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1103 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-nf 1813 df-sb 2096 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-rab 3416 df-v 3456 df-sbc 3744 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-br 5109 df-opab 5173 df-mpt 5192 df-id 5555 df-po 5568 df-so 5569 df-xp 5666 df-rel 5667 df-cnv 5668 df-co 5669 df-dm 5670 df-rn 5671 df-res 5672 df-ima 5673 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-er 8692 df-en 8942 df-dom 8943 df-sdom 8944 df-pnf 11251 df-mnf 11252 df-ltxr 11254 |
| This theorem is used by: eqneg 11941 recgt0ii 12127 nnne0i 12282 8th4div3 12470 halfpm6th 12472 5recm6rec 12867 0.999... 15942 bpoly2 16117 bpoly3 16118 fsumcube 16120 efi4p 16199 resin4p 16200 recos4p 16201 ef01bndlem 16246 cos2bnd 16250 sincos2sgn 16256 ene0 16271 pine0 26636 sinhalfpilem 26639 tan4thpi 26690 sincos6thpi 26692 sineq0 26700 coseq1 26701 efeq1 26704 cosne0 26705 efif1olem2 26719 efif1olem4 26721 eflogeq 26778 logf1o2 26826 cxpsqrt 26879 root1eq1 26931 sqrt2cxp2logb9e3 26975 ang180lem1 26985 ang180lem2 26986 ang180lem3 26987 2lgsoddprmlem1 27583 2lgsoddprmlem2 27584 chebbnd1lem3 27646 chebbnd1 27647 dp2cl 33210 dp2ltc 33217 dpfrac1 33222 dpmul4 33244 subfaclim 35688 bj-pinftynminfty 37899 taupilem1 37993 acos1half 43147 proot1ex 43951 coseq0 46606 sinaover2ne0 46610 wallispi 46812 stirlinglem3 46818 stirlinglem15 46830 dirkertrigeqlem2 46841 dirkertrigeqlem3 46842 dirkertrigeq 46843 dirkeritg 46844 dirkercncflem1 46845 fourierdlem24 46873 fourierdlem95 46943 fourierswlem 46972 goldrarr 47646 goldrasin 47647 goldrapos 47648 goldracos5teq 47650 |
| Copyright terms: Public domain | W3C validator |