| 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 8238 | . 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 2200 class class class wbr 4083 ℝcr 8014 < clt 8197 ≤ cle 8198 |
| 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 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-14 2203 ax-ext 2211 ax-sep 4202 ax-pow 4259 ax-pr 4294 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ral 2513 df-rex 2514 df-v 2801 df-dif 3199 df-un 3201 df-in 3203 df-ss 3210 df-pw 3651 df-sn 3672 df-pr 3673 df-op 3675 df-br 4084 df-opab 4146 df-xp 4726 df-cnv 4728 df-xr 8201 df-le 8203 |
| This theorem is referenced by: ltnsymd 8282 nltled 8283 lensymd 8284 leadd1 8593 lemul1 8756 leltap 8788 ap0gt0 8803 prodgt0 9015 prodge0 9017 lediv1 9032 lemuldiv 9044 lerec 9047 lt2msq 9049 le2msq 9064 squeeze0 9067 suprleubex 9117 0mnnnnn0 9417 elnn0z 9475 uzm1 9770 infregelbex 9810 fztri3or 10252 fzdisj 10265 uzdisj 10306 nn0disj 10351 fzouzdisj 10395 elfzonelfzo 10453 qdcle 10483 flqeqceilz 10557 modifeq2int 10625 modsumfzodifsn 10635 nn0leexp2 10949 expcanlem 10954 fimaxq 11067 swrdccatin2 11282 resqrexlemoverl 11553 leabs 11606 absle 11621 maxleast 11745 minmax 11762 climge0 11857 pcfac 12894 gsumfzz 13549 cxple 15612 gausslemma2dlem1a 15758 |
| Copyright terms: Public domain | W3C validator |