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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 11461 | . 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 2144 class class class wbr 5102 ℝcr 11204 < clt 11348 ≤ cle 11349 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-ext 2732 ax-sep 5248 ax-pr 5390 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-sb 2099 df-clab 2739 df-cleq 2752 df-clel 2835 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-ss 3897 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-sn 4585 df-pr 4587 df-op 4835 df-br 5103 df-opab 5167 df-xp 5656 df-cnv 5658 df-xr 11352 df-le 11354 |
| This theorem is used by: lbinf 12275 supaddc 12289 supmul1 12291 zsupss 13069 prodge0rd 13234 infmrp1 13480 fzdisj 13690 uzdisj 13736 fzouzdisj 13835 addmodlteq 14094 seqf1olem1 14189 seqf1olem2 14190 seqcoll 14614 seqcoll2 14615 ccatalpha 14745 rlimcld2 15752 rlimno1 15828 smupvallem 16660 lcmgcdlem 16788 4sqlem11 17140 ramcl2lem 17194 psdmul 22494 recld2 25141 nmoleub2lem3 25443 ivthlem3 25781 ovolicopnf 25852 dvferm1lem 26311 dvferm2lem 26313 dgrlb 26562 dgreq0 26591 aaliou3lem9 26684 radcnvle 26754 abelthlem2 26766 dvlog2lem 26987 lgsval2lem 27641 pntlem3 27943 irredminply 34396 unblimceq0lem 37466 unblimceq0 37467 mblfinlem2 38683 imo72b2 45279 climisp 46863 stoweidlem52 47169 fourierdlem10 47234 fourierdlem12 47236 fourierdlem20 47244 fourierdlem50 47273 fourierdlem54 47277 fourierdlem103 47326 fouriersw 47348 etransclem35 47386 etransc 47400 |
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