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| Mirrors > Home > MPE Home > Th. List > xrltle | Structured version Visualization version GIF version | ||
| Description: 'Less than' implies 'less than or equal' for extended reals. (Contributed by NM, 19-Jan-2006.) |
| Ref | Expression |
|---|---|
| xrltle | ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴 < 𝐵 → 𝐴 ≤ 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | orc 881 | . 2 ⊢ (𝐴 < 𝐵 → (𝐴 < 𝐵 ∨ 𝐴 = 𝐵)) | |
| 2 | xrleloe 13277 | . 2 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴 ≤ 𝐵 ↔ (𝐴 < 𝐵 ∨ 𝐴 = 𝐵))) | |
| 3 | 1, 2 | imbitrrid 249 | 1 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴 < 𝐵 → 𝐴 ≤ 𝐵)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∨ wo 861 = wceq 1569 ∈ wcel 2144 class class class wbr 5102 ℝ*cxr 11346 < clt 11347 ≤ cle 11348 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7752 ax-cnex 11260 ax-resscn 11261 ax-pre-lttri 11278 ax-pre-lttrn 11279 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5545 df-po 5558 df-so 5559 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-iota 6494 df-fun 6541 df-fn 6542 df-f 6543 df-f1 6544 df-fo 6545 df-f1o 6546 df-fv 6547 df-er 8721 df-en 8978 df-dom 8979 df-sdom 8980 df-pnf 11349 df-mnf 11350 df-xr 11351 df-ltxr 11352 df-le 11353 |
| This theorem is used by: xrltled 13283 xrletri 13286 xrletr 13291 qextltlem 13336 xmulge0 13418 supxrunb1 13453 ico0 13526 ioc0 13527 ioossicc 13568 icossicc 13571 iocssicc 13572 ioossico 13573 snunioo 13613 snunico 13614 ioopnfsup 14008 icopnfsup 14009 hashnnn0genn0 14491 leordtval2 23536 lecldbas 23543 blcls 24831 stdbdxmet 24840 stdbdmopn 24843 metcnpi3 24871 xrsmopn 25138 metnrmlem1a 25184 bndth 25285 ovolgelb 25807 icombl 25891 ioorf 25900 ioorinv2 25902 itg2seq 26069 tanord1 26871 dvloglem 26982 iocinif 33420 esumpinfsum 34756 omssubadd 34979 elicc3 37198 tan2h 38629 heicant 38667 itg2addnclem 38683 findcard4 38726 radcnvrat 45392 ioossioc 46598 ioossioobi 46623 fouriersw 47335 iccpartnel 48614 i0oii 50128 io1ii 50129 |
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