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| Mirrors > Home > MPE Home > Th. List > lensymd | Structured version Visualization version GIF version | ||
| Description: 'Less than or equal to' implies 'not less than'. (Contributed by Glauco Siliprandi, 11-Dec-2019.) |
| Ref | Expression |
|---|---|
| ltd.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
| ltd.2 | ⊢ (𝜑 → 𝐵 ∈ ℝ) |
| lensymd.3 | ⊢ (𝜑 → 𝐴 ≤ 𝐵) |
| Ref | Expression |
|---|---|
| lensymd | ⊢ (𝜑 → ¬ 𝐵 < 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | lensymd.3 | . 2 ⊢ (𝜑 → 𝐴 ≤ 𝐵) | |
| 2 | ltd.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
| 3 | ltd.2 | . . 3 ⊢ (𝜑 → 𝐵 ∈ ℝ) | |
| 4 | 2, 3 | lenltd 11449 | . 2 ⊢ (𝜑 → (𝐴 ≤ 𝐵 ↔ ¬ 𝐵 < 𝐴)) |
| 5 | 1, 4 | mpbid 235 | 1 ⊢ (𝜑 → ¬ 𝐵 < 𝐴) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ∈ wcel 2145 class class class wbr 5103 ℝcr 11192 < clt 11336 ≤ cle 11337 |
| 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 2733 ax-sep 5249 ax-pr 5391 |
| 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 2740 df-cleq 2753 df-clel 2836 df-ral 3078 df-rex 3088 df-rab 3414 df-v 3453 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-br 5104 df-opab 5168 df-xp 5657 df-cnv 5659 df-xr 11340 df-le 11342 |
| This theorem is used by: lbinf 12263 supaddc 12277 supmul1 12279 zsupss 13057 prodge0rd 13222 infmrp1 13468 fzdisj 13678 uzdisj 13724 fzouzdisj 13823 addmodlteq 14082 seqf1olem1 14177 seqf1olem2 14178 seqcoll 14602 seqcoll2 14603 ccatalpha 14733 rlimcld2 15738 rlimno1 15814 smupvallem 16646 lcmgcdlem 16774 4sqlem11 17126 ramcl2lem 17180 psdmul 22480 recld2 25127 nmoleub2lem3 25429 ivthlem3 25767 ovolicopnf 25838 dvferm1lem 26297 dvferm2lem 26299 dgrlb 26548 dgreq0 26577 aaliou3lem9 26670 radcnvle 26740 abelthlem2 26752 dvlog2lem 26973 lgsval2lem 27627 pntlem3 27929 irredminply 34341 unblimceq0lem 37352 unblimceq0 37353 mblfinlem2 38556 imo72b2 45157 climisp 46725 stoweidlem52 47031 fourierdlem10 47096 fourierdlem12 47098 fourierdlem20 47106 fourierdlem50 47135 fourierdlem54 47139 fourierdlem103 47188 fouriersw 47210 etransclem35 47248 etransc 47262 |
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