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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 8265 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 < 𝐵 → ¬ 𝐵 < 𝐴)) | |
| 2 | lenlt 8255 | . 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 8031 < clt 8214 ≤ cle 8215 |
| 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 8123 ax-resscn 8124 ax-pre-ltirr 8144 ax-pre-lttrn 8146 |
| 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 8216 df-mnf 8217 df-xr 8218 df-ltxr 8219 df-le 8220 |
| This theorem is referenced by: ltlei 8281 ltled 8298 ltleap 8812 lep1 9025 lem1 9027 letrp1 9028 ltmul12a 9040 bndndx 9401 nn0ge0 9427 zletric 9523 zlelttric 9524 zltnle 9525 zleloe 9526 ltsubnn0 9547 zdcle 9556 uzind 9591 fnn0ind 9596 eluz2b2 9837 rpge0 9901 zltaddlt1le 10242 difelfznle 10370 elfzouz2 10397 elfzo0le 10425 fzosplitprm1 10481 fzostep1 10484 qletric 10502 qlelttric 10503 qltnle 10504 expgt1 10840 expnlbnd2 10928 faclbnd 11004 swrdsbslen 11251 swrdspsleq 11252 pfxccat3 11319 swrdccat 11320 caucvgrelemcau 11558 resqrexlemdecn 11590 mulcn2 11890 efcllemp 12237 sin01bnd 12336 cos01bnd 12337 sin01gt0 12341 cos01gt0 12342 absef 12349 efieq1re 12351 nn0o 12486 pythagtriplem12 12866 pythagtriplem13 12867 pythagtriplem14 12868 pythagtriplem16 12870 pclemub 12878 sincosq1lem 15568 tangtx 15581 |
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