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| Mirrors > Home > MPE Home > Th. List > xrltnle | Structured version Visualization version GIF version | ||
| Description: "Less than" expressed in terms of "less than or equal to", for extended reals. (Contributed by NM, 6-Feb-2007.) |
| Ref | Expression |
|---|---|
| xrltnle | ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴 < 𝐵 ↔ ¬ 𝐵 ≤ 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xrlenlt 11301 | . . 3 ⊢ ((𝐵 ∈ ℝ* ∧ 𝐴 ∈ ℝ*) → (𝐵 ≤ 𝐴 ↔ ¬ 𝐴 < 𝐵)) | |
| 2 | 1 | con2bid 357 | . 2 ⊢ ((𝐵 ∈ ℝ* ∧ 𝐴 ∈ ℝ*) → (𝐴 < 𝐵 ↔ ¬ 𝐵 ≤ 𝐴)) |
| 3 | 2 | ancoms 464 | 1 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴 < 𝐵 ↔ ¬ 𝐵 ≤ 𝐴)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 401 ∈ wcel 2145 class class class wbr 5107 ℝ*cxr 11269 < clt 11270 ≤ cle 11271 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-ext 2734 ax-sep 5255 ax-pr 5402 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2100 df-clab 2741 df-cleq 2754 df-clel 2837 df-ral 3079 df-rex 3089 df-rab 3415 df-v 3455 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4283 df-if 4486 df-sn 4588 df-pr 4590 df-op 4594 df-br 5108 df-opab 5172 df-xp 5665 df-cnv 5667 df-le 11276 |
| This theorem is used by: xrltnled 11304 xrletri 13206 qextltlem 13256 xralrple 13259 xltadd1 13310 xsubge0 13315 xposdif 13316 xltmul1 13346 ioo0 13425 ico0 13446 ioc0 13447 snunioo 13533 snunioc 13535 difreicc 13539 hashbnd 14402 limsuplt 15568 pcadd 16985 pcadd2 16986 ramubcl 17114 ramlb 17115 leordtvallem1 23439 leordtvallem2 23440 leordtval2 23441 leordtval 23442 lecldbas 23448 blcld 24735 stdbdbl 24747 tmsxpsval2 24769 iocmnfcld 24998 xrsxmet 25040 metdsge 25080 bndth 25190 ovolgelb 25712 ovolunnul 25732 ioombl 25797 volsup2 25837 mbfmax 25881 ismbf3d 25886 itg2seq 25974 itg2monolem2 25983 itg2monolem3 25984 lhop2 26247 mdegleb 26294 deg1ge 26328 deg1add 26333 ig1pdvds 26410 plypf1 26442 radcnvlt1 26654 upgrfi 29549 xrdifh 33253 xrge00 33456 gsumesum 34571 itg2gt0cn 38426 asindmre 38454 dvasin 38455 aks6d1c6lem3 43040 aks6d1c7lem2 43049 iocioodisjd 43197 radcnvrat 45140 supxrgelem 46169 infrpge 46183 xrlexaddrp 46184 xrpnf 46315 gtnelioc 46323 ltnelicc 46329 gtnelicc 46332 snunioo1 46344 eliccnelico 46361 xrgtnelicc 46370 lptioo2 46463 stoweidlem34 46864 fourierdlem20 46957 fouriersw 47061 nltle2tri 48203 iccelpart 48335 |
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