| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > lenltd | GIF version | ||
| Description: 'Less than or equal to' in terms of 'less than'. (Contributed by Mario Carneiro, 27-May-2016.) |
| Ref | Expression |
|---|---|
| ltd.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
| ltd.2 | ⊢ (𝜑 → 𝐵 ∈ ℝ) |
| Ref | Expression |
|---|---|
| lenltd | ⊢ (𝜑 → (𝐴 ≤ 𝐵 ↔ ¬ 𝐵 < 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ltd.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
| 2 | ltd.2 | . 2 ⊢ (𝜑 → 𝐵 ∈ ℝ) | |
| 3 | lenlt 8349 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 ≤ 𝐵 ↔ ¬ 𝐵 < 𝐴)) | |
| 4 | 1, 2, 3 | syl2anc 411 | 1 ⊢ (𝜑 → (𝐴 ≤ 𝐵 ↔ ¬ 𝐵 < 𝐴)) |
| Colors of variables: wff set class |
| Syntax hints: ¬ wn 3 → wi 4 ↔ wb 105 ∈ wcel 2203 class class class wbr 4109 ℝcr 8126 < clt 8308 ≤ cle 8309 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-14 2206 ax-ext 2214 ax-sep 4228 ax-pow 4287 ax-pr 4322 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-eu 2083 df-mo 2084 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ral 2525 df-rex 2526 df-v 2815 df-dif 3213 df-un 3215 df-in 3217 df-ss 3224 df-pw 3671 df-sn 3695 df-pr 3696 df-op 3698 df-br 4110 df-opab 4172 df-xp 4755 df-cnv 4757 df-xr 8312 df-le 8314 |
| This theorem is referenced by: ltnsymd 8393 nltled 8394 lensymd 8395 leadd1 8704 lemul1 8867 leltap 8899 ap0gt0 8914 prodgt0 9126 prodge0 9128 lediv1 9143 lemuldiv 9155 lerec 9158 lt2msq 9160 le2msq 9175 squeeze0 9178 suprleubex 9228 0mnnnnn0 9528 elnn0z 9590 uzm1 9885 infregelbex 9930 fztri3or 10373 fzdisj 10386 uzdisj 10427 nn0disj 10472 fzouzdisj 10516 elfzonelfzo 10575 qdcle 10606 flqeqceilz 10680 modifeq2int 10748 modsumfzodifsn 10758 nn0leexp2 11072 expcanlem 11077 fimaxq 11194 swrdccatin2 11421 resqrexlemoverl 11706 leabs 11759 absle 11774 maxleast 11898 minmax 11915 climge0 12010 pcfac 13048 gsumfzz 13708 cxple 15782 gausslemma2dlem1a 15931 |
| Copyright terms: Public domain | W3C validator |