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Mirrors > Home > MPE Home > Th. List > relin01 | Structured version Visualization version GIF version |
Description: An interval law for less than or equal. (Contributed by Scott Fenton, 27-Jun-2013.) |
Ref | Expression |
---|---|
relin01 | ⊢ (𝐴 ∈ ℝ → (𝐴 ≤ 0 ∨ (0 ≤ 𝐴 ∧ 𝐴 ≤ 1) ∨ 1 ≤ 𝐴)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1re 10906 | . . . 4 ⊢ 1 ∈ ℝ | |
2 | letric 11005 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 1 ∈ ℝ) → (𝐴 ≤ 1 ∨ 1 ≤ 𝐴)) | |
3 | 1, 2 | mpan2 687 | . . 3 ⊢ (𝐴 ∈ ℝ → (𝐴 ≤ 1 ∨ 1 ≤ 𝐴)) |
4 | 0re 10908 | . . . . . 6 ⊢ 0 ∈ ℝ | |
5 | letric 11005 | . . . . . 6 ⊢ ((𝐴 ∈ ℝ ∧ 0 ∈ ℝ) → (𝐴 ≤ 0 ∨ 0 ≤ 𝐴)) | |
6 | 4, 5 | mpan2 687 | . . . . 5 ⊢ (𝐴 ∈ ℝ → (𝐴 ≤ 0 ∨ 0 ≤ 𝐴)) |
7 | pm3.21 471 | . . . . . 6 ⊢ (𝐴 ≤ 1 → (0 ≤ 𝐴 → (0 ≤ 𝐴 ∧ 𝐴 ≤ 1))) | |
8 | 7 | orim2d 963 | . . . . 5 ⊢ (𝐴 ≤ 1 → ((𝐴 ≤ 0 ∨ 0 ≤ 𝐴) → (𝐴 ≤ 0 ∨ (0 ≤ 𝐴 ∧ 𝐴 ≤ 1)))) |
9 | 6, 8 | syl5com 31 | . . . 4 ⊢ (𝐴 ∈ ℝ → (𝐴 ≤ 1 → (𝐴 ≤ 0 ∨ (0 ≤ 𝐴 ∧ 𝐴 ≤ 1)))) |
10 | 9 | orim1d 962 | . . 3 ⊢ (𝐴 ∈ ℝ → ((𝐴 ≤ 1 ∨ 1 ≤ 𝐴) → ((𝐴 ≤ 0 ∨ (0 ≤ 𝐴 ∧ 𝐴 ≤ 1)) ∨ 1 ≤ 𝐴))) |
11 | 3, 10 | mpd 15 | . 2 ⊢ (𝐴 ∈ ℝ → ((𝐴 ≤ 0 ∨ (0 ≤ 𝐴 ∧ 𝐴 ≤ 1)) ∨ 1 ≤ 𝐴)) |
12 | df-3or 1086 | . 2 ⊢ ((𝐴 ≤ 0 ∨ (0 ≤ 𝐴 ∧ 𝐴 ≤ 1) ∨ 1 ≤ 𝐴) ↔ ((𝐴 ≤ 0 ∨ (0 ≤ 𝐴 ∧ 𝐴 ≤ 1)) ∨ 1 ≤ 𝐴)) | |
13 | 11, 12 | sylibr 233 | 1 ⊢ (𝐴 ∈ ℝ → (𝐴 ≤ 0 ∨ (0 ≤ 𝐴 ∧ 𝐴 ≤ 1) ∨ 1 ≤ 𝐴)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 ∨ wo 843 ∨ w3o 1084 ∈ wcel 2108 class class class wbr 5070 ℝcr 10801 0cc0 10802 1c1 10803 ≤ cle 10941 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-i2m1 10870 ax-1ne0 10871 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4837 df-br 5071 df-opab 5133 df-mpt 5154 df-id 5480 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-ov 7258 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 |
This theorem is referenced by: colinearalglem4 27180 |
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