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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 11495 | . 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 2147 class class class wbr 5108 ℝcr 11238 < clt 11382 ≤ cle 11383 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-ext 2735 ax-sep 5255 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 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4841 df-br 5109 df-opab 5174 df-xp 5664 df-cnv 5666 df-xr 11386 df-le 11388 |
| This theorem is used by: lbinf 12310 supaddc 12324 supmul1 12326 zsupss 13104 prodge0rd 13269 infmrp1 13515 fzdisj 13725 uzdisj 13771 fzouzdisj 13870 addmodlteq 14129 seqf1olem1 14224 seqf1olem2 14225 seqcoll 14650 seqcoll2 14651 ccatalpha 14781 rlimcld2 15789 rlimno1 15865 smupvallem 16697 lcmgcdlem 16825 4sqlem11 17177 ramcl2lem 17231 psdmul 22542 recld2 25189 nmoleub2lem3 25491 ivthlem3 25829 ovolicopnf 25900 dvferm1lem 26359 dvferm2lem 26361 dgrlb 26610 dgreq0 26639 aaliou3lem9 26734 radcnvle 26804 abelthlem2 26816 dvlog2lem 27037 lgsval2lem 27691 pntlem3 27993 irredminply 34459 unblimceq0lem 37587 unblimceq0 37588 mblfinlem2 38844 imo72b2 45433 climisp 47029 stoweidlem52 47335 fourierdlem10 47400 fourierdlem12 47402 fourierdlem20 47410 fourierdlem50 47439 fourierdlem54 47443 fourierdlem103 47492 fouriersw 47514 etransclem35 47552 etransc 47566 |
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