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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 11380 | . 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 11123 < clt 11267 ≤ cle 11268 |
| 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 2732 ax-sep 5251 ax-pr 5398 |
| 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 2739 df-cleq 2752 df-clel 2835 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 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 5661 df-cnv 5663 df-xr 11271 df-le 11273 |
| This theorem is used by: lbinf 12192 supaddc 12206 supmul1 12208 zsupss 12986 prodge0rd 13151 infmrp1 13397 fzdisj 13606 uzdisj 13652 fzouzdisj 13751 addmodlteq 14010 seqf1olem1 14105 seqf1olem2 14106 seqcoll 14529 seqcoll2 14530 ccatalpha 14660 rlimcld2 15665 rlimno1 15741 smupvallem 16573 lcmgcdlem 16696 4sqlem11 17047 ramcl2lem 17101 psdmul 22394 recld2 25041 nmoleub2lem3 25343 ivthlem3 25681 ovolicopnf 25752 dvferm1lem 26211 dvferm2lem 26213 dgrlb 26462 dgreq0 26491 aaliou3lem9 26586 radcnvle 26656 abelthlem2 26668 dvlog2lem 26889 lgsval2lem 27543 pntlem3 27845 irredminply 34226 unblimceq0lem 37203 unblimceq0 37204 mblfinlem2 38407 imo72b2 45012 climisp 46574 stoweidlem52 46880 fourierdlem10 46945 fourierdlem12 46947 fourierdlem20 46955 fourierdlem50 46984 fourierdlem54 46988 fourierdlem103 47037 fouriersw 47059 etransclem35 47097 etransc 47111 |
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