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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 8358 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 < 𝐵 → ¬ 𝐵 < 𝐴)) | |
| 2 | lenlt 8348 | . 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 2203 class class class wbr 4108 ℝcr 8125 < clt 8307 ≤ cle 8308 |
| 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-13 2205 ax-14 2206 ax-ext 2214 ax-sep 4227 ax-pow 4286 ax-pr 4321 ax-un 4553 ax-setind 4658 ax-cnex 8217 ax-resscn 8218 ax-pre-ltirr 8238 ax-pre-lttrn 8240 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 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-ne 2413 df-nel 2508 df-ral 2525 df-rex 2526 df-rab 2529 df-v 2814 df-dif 3212 df-un 3214 df-in 3216 df-ss 3223 df-pw 3670 df-sn 3694 df-pr 3695 df-op 3697 df-uni 3914 df-br 4109 df-opab 4171 df-xp 4754 df-cnv 4756 df-pnf 8309 df-mnf 8310 df-xr 8311 df-ltxr 8312 df-le 8313 |
| This theorem is referenced by: ltlei 8374 ltled 8391 ltleap 8905 lep1 9118 lem1 9120 letrp1 9121 ltmul12a 9133 bndndx 9494 nn0ge0 9520 zletric 9620 zlelttric 9621 zltnle 9622 zleloe 9623 ltsubnn0 9644 zdcle 9653 uzind 9688 fnn0ind 9693 eluz2b2 9934 rpge0 9998 zltaddlt1le 10340 difelfznle 10468 elfzouz2 10495 elfzo0le 10523 fzosplitprm1 10579 fzostep1 10582 qletric 10600 qlelttric 10601 qltnle 10602 expgt1 10938 expnlbnd2 11026 faclbnd 11102 swrdsbslen 11354 swrdspsleq 11355 pfxccat3 11422 swrdccat 11423 caucvgrelemcau 11661 resqrexlemdecn 11693 mulcn2 11993 efcllemp 12340 sin01bnd 12439 cos01bnd 12440 sin01gt0 12444 cos01gt0 12445 absef 12452 efieq1re 12454 nn0o 12589 pythagtriplem12 12969 pythagtriplem13 12970 pythagtriplem14 12971 pythagtriplem16 12973 pclemub 12981 sincosq1lem 15682 tangtx 15695 |
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