| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > ltnlei | Structured version Visualization version GIF version | ||
| Description: 'Less than' in terms of 'less than or equal to'. (Contributed by NM, 11-Jul-2005.) |
| Ref | Expression |
|---|---|
| lt.1 | ⊢ 𝐴 ∈ ℝ |
| lt.2 | ⊢ 𝐵 ∈ ℝ |
| Ref | Expression |
|---|---|
| ltnlei | ⊢ (𝐴 < 𝐵 ↔ ¬ 𝐵 ≤ 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | lt.2 | . . 3 ⊢ 𝐵 ∈ ℝ | |
| 2 | lt.1 | . . 3 ⊢ 𝐴 ∈ ℝ | |
| 3 | 1, 2 | lenlti 11469 | . 2 ⊢ (𝐵 ≤ 𝐴 ↔ ¬ 𝐴 < 𝐵) |
| 4 | 3 | con2bii 360 | 1 ⊢ (𝐴 < 𝐵 ↔ ¬ 𝐵 ≤ 𝐴) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 ↔ wb 209 ∈ wcel 2147 class class class wbr 5108 ℝcr 11238 < clt 11382 ≤ cle 11383 |
| 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-ext 2735 ax-sep 5255 ax-pr 5398 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4841 df-br 5109 df-opab 5174 df-xp 5664 df-cnv 5666 df-xr 11386 df-le 11388 |
| This theorem is used by: letrii 11474 nn0ge2m1nn 12716 0nelfz1 13716 fzpreddisj 13747 hashnn0n0nn 14576 hashge2el2dif 14666 hash3tpde 14679 divalglem5 16611 divalglem6 16612 sadcadd 16672 htpycc 25356 pco1 25391 pcohtpylem 25395 pcopt 25398 pcopt2 25399 pcoass 25400 pcorevlem 25402 vitalilem5 25988 vieta1lem2 26689 ppiltx 27561 ppiublem1 27586 chtub 27596 axlowdimlem16 29592 axlowdim 29596 lfgrnloop 29760 lfuhgr1v0e 29892 lfgrwlkprop 30327 ballotlem2 35232 subfacp1lem1 36152 subfacp1lem5 36157 bcneg1 36716 poimirlem9 38815 poimirlem16 38822 poimirlem17 38823 poimirlem19 38825 poimirlem20 38826 poimirlem22 38828 fdc 38945 pellexlem6 44107 jm2.23 44269 nprmdvdsfacm1lem2 48979 |
| Copyright terms: Public domain | W3C validator |