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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 10686 | . 2 ⊢ (𝐴 ∈ ℝ → 𝐴 ∈ ℝ*) | |
2 | rexr 10686 | . 2 ⊢ (𝐵 ∈ ℝ → 𝐵 ∈ ℝ*) | |
3 | xrlenlt 10705 | . 2 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴 ≤ 𝐵 ↔ ¬ 𝐵 < 𝐴)) | |
4 | 1, 2, 3 | syl2an 597 | 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 2110 class class class wbr 5065 ℝcr 10535 ℝ*cxr 10673 < clt 10674 ≤ cle 10675 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2157 ax-12 2173 ax-ext 2793 ax-sep 5202 ax-nul 5209 ax-pr 5329 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-mo 2618 df-eu 2650 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 3938 df-un 3940 df-in 3942 df-ss 3951 df-nul 4291 df-if 4467 df-sn 4567 df-pr 4569 df-op 4573 df-br 5066 df-opab 5128 df-xp 5560 df-cnv 5562 df-xr 10678 df-le 10680 |
This theorem is referenced by: ltnle 10719 letri3 10725 leloe 10726 eqlelt 10727 ne0gt0 10744 lelttric 10746 lenlti 10759 lenltd 10785 ltaddsub 11113 leord1 11166 lediv1 11504 suprleub 11606 dfinfre 11621 infregelb 11624 nnge1 11664 nnnlt1 11668 avgle1 11876 avgle2 11877 nn0nlt0 11922 recnz 12056 btwnnz 12057 prime 12062 indstr 12315 uzsupss 12339 zbtwnre 12345 rpneg 12420 2resupmax 12580 fzn 12922 nelfzo 13042 fzonlt0 13059 fllt 13175 flflp1 13176 modifeq2int 13300 om2uzlt2i 13318 fsuppmapnn0fiub0 13360 suppssfz 13361 leexp2 13534 discr 13600 bcval4 13666 ccatsymb 13935 swrd0 14019 sqrtneglem 14625 harmonic 15213 efle 15470 dvdsle 15659 dfgcd2 15893 lcmf 15976 infpnlem1 16245 pgpssslw 18738 gsummoncoe1 20471 mp2pm2mplem4 21416 dvferm1 24581 dvferm2 24583 dgrlt 24855 logleb 25185 argrege0 25193 ellogdm 25221 cxple 25277 cxple3 25283 asinneg 25463 birthdaylem3 25530 ppieq0 25752 chpeq0 25783 chteq0 25784 lgsval2lem 25882 lgsneg 25896 lgsdilem 25899 gausslemma2dlem1a 25940 gausslemma2dlem3 25943 ostth2lem1 26193 ostth3 26213 rusgrnumwwlks 27752 clwlkclwwlklem2a 27775 frgrreg 28172 friendship 28177 nmounbi 28552 nmlno0lem 28569 nmlnop0iALT 29771 supfz 32960 inffz 32961 fz0n 32962 nn0prpw 33671 leceifl 34880 poimirlem15 34906 poimirlem16 34907 poimirlem17 34908 poimirlem20 34911 poimirlem24 34915 poimirlem31 34922 poimirlem32 34923 ftc1anclem1 34966 nninfnub 35025 ellz1 39362 rencldnfilem 39415 icccncfext 42168 subsubelfzo0 43525 digexp 44666 reorelicc 44696 |
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