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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 8264 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 < 𝐵 → ¬ 𝐵 < 𝐴)) | |
| 2 | lenlt 8254 | . 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 4088 ℝcr 8030 < clt 8213 ≤ cle 8214 |
| 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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4207 ax-pow 4264 ax-pr 4299 ax-un 4530 ax-setind 4635 ax-cnex 8122 ax-resscn 8123 ax-pre-ltirr 8143 ax-pre-lttrn 8145 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ne 2403 df-nel 2498 df-ral 2515 df-rex 2516 df-rab 2519 df-v 2804 df-dif 3202 df-un 3204 df-in 3206 df-ss 3213 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-br 4089 df-opab 4151 df-xp 4731 df-cnv 4733 df-pnf 8215 df-mnf 8216 df-xr 8217 df-ltxr 8218 df-le 8219 |
| This theorem is referenced by: ltlei 8280 ltled 8297 ltleap 8811 lep1 9024 lem1 9026 letrp1 9027 ltmul12a 9039 bndndx 9400 nn0ge0 9426 zletric 9522 zlelttric 9523 zltnle 9524 zleloe 9525 ltsubnn0 9546 zdcle 9555 uzind 9590 fnn0ind 9595 eluz2b2 9836 rpge0 9900 zltaddlt1le 10241 difelfznle 10369 elfzouz2 10396 elfzo0le 10423 fzosplitprm1 10479 fzostep1 10482 qletric 10500 qlelttric 10501 qltnle 10502 expgt1 10838 expnlbnd2 10926 faclbnd 11002 swrdsbslen 11246 swrdspsleq 11247 pfxccat3 11314 swrdccat 11315 caucvgrelemcau 11540 resqrexlemdecn 11572 mulcn2 11872 efcllemp 12218 sin01bnd 12317 cos01bnd 12318 sin01gt0 12322 cos01gt0 12323 absef 12330 efieq1re 12332 nn0o 12467 pythagtriplem12 12847 pythagtriplem13 12848 pythagtriplem14 12849 pythagtriplem16 12851 pclemub 12859 sincosq1lem 15548 tangtx 15561 |
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