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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 8243 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 < 𝐵 → ¬ 𝐵 < 𝐴)) | |
| 2 | lenlt 8233 | . 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 4083 ℝcr 8009 < clt 8192 ≤ cle 8193 |
| 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 4202 ax-pow 4258 ax-pr 4293 ax-un 4524 ax-setind 4629 ax-cnex 8101 ax-resscn 8102 ax-pre-ltirr 8122 ax-pre-lttrn 8124 |
| 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 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-uni 3889 df-br 4084 df-opab 4146 df-xp 4725 df-cnv 4727 df-pnf 8194 df-mnf 8195 df-xr 8196 df-ltxr 8197 df-le 8198 |
| This theorem is referenced by: ltlei 8259 ltled 8276 ltleap 8790 lep1 9003 lem1 9005 letrp1 9006 ltmul12a 9018 bndndx 9379 nn0ge0 9405 zletric 9501 zlelttric 9502 zltnle 9503 zleloe 9504 ltsubnn0 9525 zdcle 9534 uzind 9569 fnn0ind 9574 eluz2b2 9810 rpge0 9874 zltaddlt1le 10215 difelfznle 10343 elfzouz2 10370 elfzo0le 10397 fzosplitprm1 10452 fzostep1 10455 qletric 10473 qlelttric 10474 qltnle 10475 expgt1 10811 expnlbnd2 10899 faclbnd 10975 swrdsbslen 11213 swrdspsleq 11214 pfxccat3 11281 swrdccat 11282 caucvgrelemcau 11506 resqrexlemdecn 11538 mulcn2 11838 efcllemp 12184 sin01bnd 12283 cos01bnd 12284 sin01gt0 12288 cos01gt0 12289 absef 12296 efieq1re 12298 nn0o 12433 pythagtriplem12 12813 pythagtriplem13 12814 pythagtriplem14 12815 pythagtriplem16 12817 pclemub 12825 sincosq1lem 15514 tangtx 15527 |
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