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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 894 | . 2 ⊢ (𝐴 < 𝐵 → (𝐴 < 𝐵 ∨ 𝐴 = 𝐵)) | |
2 | xrleloe 12224 | . 2 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴 ≤ 𝐵 ↔ (𝐴 < 𝐵 ∨ 𝐴 = 𝐵))) | |
3 | 1, 2 | syl5ibr 238 | 1 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴 < 𝐵 → 𝐴 ≤ 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 385 ∨ wo 874 = wceq 1653 ∈ wcel 2157 class class class wbr 4843 ℝ*cxr 10362 < clt 10363 ≤ cle 10364 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1891 ax-4 1905 ax-5 2006 ax-6 2072 ax-7 2107 ax-8 2159 ax-9 2166 ax-10 2185 ax-11 2200 ax-12 2213 ax-13 2377 ax-ext 2777 ax-sep 4975 ax-nul 4983 ax-pow 5035 ax-pr 5097 ax-un 7183 ax-cnex 10280 ax-resscn 10281 ax-pre-lttri 10298 ax-pre-lttrn 10299 |
This theorem depends on definitions: df-bi 199 df-an 386 df-or 875 df-3or 1109 df-3an 1110 df-tru 1657 df-ex 1876 df-nf 1880 df-sb 2065 df-mo 2591 df-eu 2609 df-clab 2786 df-cleq 2792 df-clel 2795 df-nfc 2930 df-ne 2972 df-nel 3075 df-ral 3094 df-rex 3095 df-rab 3098 df-v 3387 df-sbc 3634 df-csb 3729 df-dif 3772 df-un 3774 df-in 3776 df-ss 3783 df-nul 4116 df-if 4278 df-pw 4351 df-sn 4369 df-pr 4371 df-op 4375 df-uni 4629 df-br 4844 df-opab 4906 df-mpt 4923 df-id 5220 df-po 5233 df-so 5234 df-xp 5318 df-rel 5319 df-cnv 5320 df-co 5321 df-dm 5322 df-rn 5323 df-res 5324 df-ima 5325 df-iota 6064 df-fun 6103 df-fn 6104 df-f 6105 df-f1 6106 df-fo 6107 df-f1o 6108 df-fv 6109 df-er 7982 df-en 8196 df-dom 8197 df-sdom 8198 df-pnf 10365 df-mnf 10366 df-xr 10367 df-ltxr 10368 df-le 10369 |
This theorem is referenced by: xrltled 12230 xrletri 12233 xrletr 12238 qextltlem 12282 xmulge0 12363 supxrunb1 12398 ico0 12470 ioc0 12471 ioossicc 12508 icossicc 12510 iocssicc 12511 ioossico 12512 ioounsnOLD 12551 snunioo 12552 snunico 12553 ioopnfsup 12918 icopnfsup 12919 hashnnn0genn0 13383 leordtval2 21345 lecldbas 21352 blcls 22639 stdbdxmet 22648 stdbdmopn 22651 metcnpi3 22679 xrsmopn 22943 metnrmlem1a 22989 bndth 23085 ovolgelb 23588 icombl 23672 ioorf 23681 ioorinv2 23683 itg2seq 23850 tanord1 24625 dvloglem 24735 iocinif 30061 esumpinfsum 30655 omssubadd 30878 elicc3 32824 tan2h 33890 heicant 33933 itg2addnclem 33949 radcnvrat 39295 ioossioc 40461 ioossioobi 40488 fouriersw 41191 iccpartnel 42214 |
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