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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 10706 | . . 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 461 | 1 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴 < 𝐵 ↔ ¬ 𝐵 ≤ 𝐴)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 208 ∧ wa 398 ∈ wcel 2114 class class class wbr 5066 ℝ*cxr 10674 < clt 10675 ≤ cle 10676 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-sep 5203 ax-nul 5210 ax-pr 5330 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3496 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-nul 4292 df-if 4468 df-sn 4568 df-pr 4570 df-op 4574 df-br 5067 df-opab 5129 df-xp 5561 df-cnv 5563 df-le 10681 |
This theorem is referenced by: xrletri 12547 qextltlem 12596 xralrple 12599 xltadd1 12650 xsubge0 12655 xposdif 12656 xltmul1 12686 ioo0 12764 ico0 12785 ioc0 12786 snunioo 12865 snunioc 12867 difreicc 12871 hashbnd 13697 limsuplt 14836 pcadd 16225 pcadd2 16226 ramubcl 16354 ramlb 16355 leordtvallem1 21818 leordtvallem2 21819 leordtval2 21820 leordtval 21821 lecldbas 21827 blcld 23115 stdbdbl 23127 tmsxpsval2 23149 iocmnfcld 23377 xrsxmet 23417 metdsge 23457 bndth 23562 ovolgelb 24081 ovolunnul 24101 ioombl 24166 volsup2 24206 mbfmax 24250 ismbf3d 24255 itg2seq 24343 itg2monolem2 24352 itg2monolem3 24353 lhop2 24612 mdegleb 24658 deg1ge 24692 deg1add 24697 ig1pdvds 24770 plypf1 24802 radcnvlt1 25006 upgrfi 26876 xrdifh 30503 xrge00 30673 gsumesum 31318 itg2gt0cn 34962 asindmre 34992 dvasin 34993 radcnvrat 40695 supxrgelem 41654 infrpge 41668 xrlexaddrp 41669 xrltnled 41680 xrpnf 41811 gtnelioc 41814 ltnelicc 41821 gtnelicc 41824 snunioo1 41837 eliccnelico 41854 xrgtnelicc 41863 lptioo2 41961 stoweidlem34 42368 fourierdlem20 42461 fouriersw 42565 nltle2tri 43562 iccelpart 43642 |
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