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| Mirrors > Home > ILE Home > Th. List > ltle | GIF version | ||
| Description: 'Less than' implies 'less than or equal to'. (Contributed by NM, 25-Aug-1999.) |
| Ref | Expression |
|---|---|
| ltle | ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 < 𝐵 → 𝐴 ≤ 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ltnsym 8255 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 < 𝐵 → ¬ 𝐵 < 𝐴)) | |
| 2 | lenlt 8245 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 ≤ 𝐵 ↔ ¬ 𝐵 < 𝐴)) | |
| 3 | 1, 2 | sylibrd 169 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 < 𝐵 → 𝐴 ≤ 𝐵)) |
| Colors of variables: wff set class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 104 ∈ wcel 2200 class class class wbr 4086 ℝcr 8021 < clt 8204 ≤ cle 8205 |
| 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-13 2202 ax-14 2203 ax-ext 2211 ax-sep 4205 ax-pow 4262 ax-pr 4297 ax-un 4528 ax-setind 4633 ax-cnex 8113 ax-resscn 8114 ax-pre-ltirr 8134 ax-pre-lttrn 8136 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-fal 1401 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-ne 2401 df-nel 2496 df-ral 2513 df-rex 2514 df-rab 2517 df-v 2802 df-dif 3200 df-un 3202 df-in 3204 df-ss 3211 df-pw 3652 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-br 4087 df-opab 4149 df-xp 4729 df-cnv 4731 df-pnf 8206 df-mnf 8207 df-xr 8208 df-ltxr 8209 df-le 8210 |
| This theorem is referenced by: ltlei 8271 ltled 8288 ltleap 8802 lep1 9015 lem1 9017 letrp1 9018 ltmul12a 9030 bndndx 9391 nn0ge0 9417 zletric 9513 zlelttric 9514 zltnle 9515 zleloe 9516 ltsubnn0 9537 zdcle 9546 uzind 9581 fnn0ind 9586 eluz2b2 9827 rpge0 9891 zltaddlt1le 10232 difelfznle 10360 elfzouz2 10387 elfzo0le 10414 fzosplitprm1 10470 fzostep1 10473 qletric 10491 qlelttric 10492 qltnle 10493 expgt1 10829 expnlbnd2 10917 faclbnd 10993 swrdsbslen 11237 swrdspsleq 11238 pfxccat3 11305 swrdccat 11306 caucvgrelemcau 11531 resqrexlemdecn 11563 mulcn2 11863 efcllemp 12209 sin01bnd 12308 cos01bnd 12309 sin01gt0 12313 cos01gt0 12314 absef 12321 efieq1re 12323 nn0o 12458 pythagtriplem12 12838 pythagtriplem13 12839 pythagtriplem14 12840 pythagtriplem16 12842 pclemub 12850 sincosq1lem 15539 tangtx 15552 |
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