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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 11178 | . 2 ⊢ (0 < 𝐴 → 𝐴 ≠ 0) |
4 | 1, 3 | ax-mp 5 | 1 ⊢ 𝐴 ≠ 0 |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2113 ≠ wne 3019 class class class wbr 5069 ℝcr 10539 0cc0 10540 < clt 10678 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1969 ax-7 2014 ax-8 2115 ax-9 2123 ax-10 2144 ax-11 2160 ax-12 2176 ax-ext 2796 ax-sep 5206 ax-nul 5213 ax-pow 5269 ax-pr 5333 ax-un 7464 ax-resscn 10597 ax-1cn 10598 ax-addrcl 10601 ax-rnegex 10611 ax-cnre 10613 ax-pre-lttri 10614 ax-pre-lttrn 10615 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1539 df-ex 1780 df-nf 1784 df-sb 2069 df-mo 2621 df-eu 2653 df-clab 2803 df-cleq 2817 df-clel 2896 df-nfc 2966 df-ne 3020 df-nel 3127 df-ral 3146 df-rex 3147 df-rab 3150 df-v 3499 df-sbc 3776 df-csb 3887 df-dif 3942 df-un 3944 df-in 3946 df-ss 3955 df-nul 4295 df-if 4471 df-pw 4544 df-sn 4571 df-pr 4573 df-op 4577 df-uni 4842 df-br 5070 df-opab 5132 df-mpt 5150 df-id 5463 df-po 5477 df-so 5478 df-xp 5564 df-rel 5565 df-cnv 5566 df-co 5567 df-dm 5568 df-rn 5569 df-res 5570 df-ima 5571 df-iota 6317 df-fun 6360 df-fn 6361 df-f 6362 df-f1 6363 df-fo 6364 df-f1o 6365 df-fv 6366 df-er 8292 df-en 8513 df-dom 8514 df-sdom 8515 df-pnf 10680 df-mnf 10681 df-ltxr 10683 |
This theorem is referenced by: eqneg 11363 recgt0ii 11549 nnne0i 11680 2ne0 11744 3ne0 11746 4ne0 11748 8th4div3 11860 halfpm6th 11861 5recm6rec 12245 0.999... 15240 bpoly2 15414 bpoly3 15415 fsumcube 15417 efi4p 15493 resin4p 15494 recos4p 15495 ef01bndlem 15540 cos2bnd 15544 sincos2sgn 15550 ene0 15565 sinhalfpilem 25052 sincos6thpi 25104 sineq0 25112 coseq1 25113 efeq1 25116 cosne0 25117 efif1olem2 25130 efif1olem4 25132 eflogeq 25188 logf1o2 25236 cxpsqrt 25289 root1eq1 25339 sqrt2cxp2logb9e3 25380 ang180lem1 25390 ang180lem2 25391 ang180lem3 25392 2lgsoddprmlem1 25987 2lgsoddprmlem2 25988 chebbnd1lem3 26050 chebbnd1 26051 dp2cl 30560 dp2ltc 30567 dpfrac1 30572 dpmul4 30594 subfaclim 32439 bj-pinftynminfty 34513 taupilem1 34606 proot1ex 39807 coseq0 42151 sinaover2ne0 42155 wallispi 42362 stirlinglem3 42368 stirlinglem15 42380 dirkertrigeqlem2 42391 dirkertrigeqlem3 42392 dirkertrigeq 42393 dirkeritg 42394 dirkercncflem1 42395 fourierdlem24 42423 fourierdlem95 42493 fourierswlem 42522 |
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