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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 8307 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 < 𝐵 → ¬ 𝐵 < 𝐴)) | |
| 2 | lenlt 8297 | . 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 2202 class class class wbr 4093 ℝcr 8074 < clt 8256 ≤ cle 8257 |
| 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 2204 ax-14 2205 ax-ext 2213 ax-sep 4212 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-setind 4641 ax-cnex 8166 ax-resscn 8167 ax-pre-ltirr 8187 ax-pre-lttrn 8189 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ne 2404 df-nel 2499 df-ral 2516 df-rex 2517 df-rab 2520 df-v 2805 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-br 4094 df-opab 4156 df-xp 4737 df-cnv 4739 df-pnf 8258 df-mnf 8259 df-xr 8260 df-ltxr 8261 df-le 8262 |
| This theorem is referenced by: ltlei 8323 ltled 8340 ltleap 8854 lep1 9067 lem1 9069 letrp1 9070 ltmul12a 9082 bndndx 9443 nn0ge0 9469 zletric 9567 zlelttric 9568 zltnle 9569 zleloe 9570 ltsubnn0 9591 zdcle 9600 uzind 9635 fnn0ind 9640 eluz2b2 9881 rpge0 9945 zltaddlt1le 10287 difelfznle 10415 elfzouz2 10442 elfzo0le 10470 fzosplitprm1 10526 fzostep1 10529 qletric 10547 qlelttric 10548 qltnle 10549 expgt1 10885 expnlbnd2 10973 faclbnd 11049 swrdsbslen 11296 swrdspsleq 11297 pfxccat3 11364 swrdccat 11365 caucvgrelemcau 11603 resqrexlemdecn 11635 mulcn2 11935 efcllemp 12282 sin01bnd 12381 cos01bnd 12382 sin01gt0 12386 cos01gt0 12387 absef 12394 efieq1re 12396 nn0o 12531 pythagtriplem12 12911 pythagtriplem13 12912 pythagtriplem14 12913 pythagtriplem16 12915 pclemub 12923 sincosq1lem 15619 tangtx 15632 |
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