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Mirrors > Home > MPE Home > Th. List > lenlt | Structured version Visualization version GIF version |
Description: 'Less than or equal to' expressed in terms of 'less than'. (Contributed by NM, 13-May-1999.) |
Ref | Expression |
---|---|
lenlt | ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 ≤ 𝐵 ↔ ¬ 𝐵 < 𝐴)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | rexr 10844 | . 2 ⊢ (𝐴 ∈ ℝ → 𝐴 ∈ ℝ*) | |
2 | rexr 10844 | . 2 ⊢ (𝐵 ∈ ℝ → 𝐵 ∈ ℝ*) | |
3 | xrlenlt 10863 | . 2 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴 ≤ 𝐵 ↔ ¬ 𝐵 < 𝐴)) | |
4 | 1, 2, 3 | syl2an 599 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 ≤ 𝐵 ↔ ¬ 𝐵 < 𝐴)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 399 ∈ wcel 2112 class class class wbr 5039 ℝcr 10693 ℝ*cxr 10831 < clt 10832 ≤ cle 10833 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2018 ax-8 2114 ax-9 2122 ax-ext 2708 ax-sep 5177 ax-nul 5184 ax-pr 5307 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-sb 2073 df-clab 2715 df-cleq 2728 df-clel 2809 df-ral 3056 df-rex 3057 df-rab 3060 df-v 3400 df-dif 3856 df-un 3858 df-in 3860 df-ss 3870 df-nul 4224 df-if 4426 df-sn 4528 df-pr 4530 df-op 4534 df-br 5040 df-opab 5102 df-xp 5542 df-cnv 5544 df-xr 10836 df-le 10838 |
This theorem is referenced by: ltnle 10877 letri3 10883 leloe 10884 eqlelt 10885 ne0gt0 10902 lelttric 10904 lenlti 10917 lenltd 10943 ltaddsub 11271 leord1 11324 lediv1 11662 suprleub 11763 dfinfre 11778 infregelb 11781 nnge1 11823 nnnlt1 11827 avgle1 12035 avgle2 12036 nn0nlt0 12081 recnz 12217 btwnnz 12218 prime 12223 indstr 12477 uzsupss 12501 zbtwnre 12507 rpneg 12583 2resupmax 12743 fzn 13093 nelfzo 13213 fzonlt0 13230 fllt 13346 flflp1 13347 modifeq2int 13471 om2uzlt2i 13489 fsuppmapnn0fiub0 13531 suppssfz 13532 leexp2 13706 discr 13772 bcval4 13838 ccatsymb 14104 swrd0 14188 sqrtneglem 14795 harmonic 15386 efle 15642 dvdsle 15834 dfgcd2 16069 lcmf 16153 infpnlem1 16426 pgpssslw 18957 gsummoncoe1 21179 mp2pm2mplem4 21660 dvferm1 24836 dvferm2 24838 dgrlt 25114 logleb 25445 argrege0 25453 ellogdm 25481 cxple 25537 cxple3 25543 asinneg 25723 birthdaylem3 25790 ppieq0 26012 chpeq0 26043 chteq0 26044 lgsval2lem 26142 lgsneg 26156 lgsdilem 26159 gausslemma2dlem1a 26200 gausslemma2dlem3 26203 ostth2lem1 26453 ostth3 26473 rusgrnumwwlks 28012 clwlkclwwlklem2a 28035 frgrreg 28431 friendship 28436 nmounbi 28811 nmlno0lem 28828 nmlnop0iALT 30030 supfz 33363 inffz 33364 fz0n 33365 nn0prpw 34198 leceifl 35452 poimirlem15 35478 poimirlem16 35479 poimirlem17 35480 poimirlem20 35483 poimirlem24 35487 poimirlem31 35494 poimirlem32 35495 ftc1anclem1 35536 nninfnub 35595 metakunt22 39809 ellz1 40233 rencldnfilem 40286 icccncfext 43046 subsubelfzo0 44434 digexp 45569 reorelicc 45672 |
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