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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 10975 | . . . 4 ⊢ 1 ∈ ℝ | |
2 | letric 11075 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 1 ∈ ℝ) → (𝐴 ≤ 1 ∨ 1 ≤ 𝐴)) | |
3 | 1, 2 | mpan2 688 | . . 3 ⊢ (𝐴 ∈ ℝ → (𝐴 ≤ 1 ∨ 1 ≤ 𝐴)) |
4 | 0re 10977 | . . . . . 6 ⊢ 0 ∈ ℝ | |
5 | letric 11075 | . . . . . 6 ⊢ ((𝐴 ∈ ℝ ∧ 0 ∈ ℝ) → (𝐴 ≤ 0 ∨ 0 ≤ 𝐴)) | |
6 | 4, 5 | mpan2 688 | . . . . 5 ⊢ (𝐴 ∈ ℝ → (𝐴 ≤ 0 ∨ 0 ≤ 𝐴)) |
7 | pm3.21 472 | . . . . . 6 ⊢ (𝐴 ≤ 1 → (0 ≤ 𝐴 → (0 ≤ 𝐴 ∧ 𝐴 ≤ 1))) | |
8 | 7 | orim2d 964 | . . . . 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 963 | . . 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 1087 | . 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 396 ∨ wo 844 ∨ w3o 1085 ∈ wcel 2106 class class class wbr 5074 ℝcr 10870 0cc0 10871 1c1 10872 ≤ cle 11010 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-i2m1 10939 ax-1ne0 10940 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-br 5075 df-opab 5137 df-mpt 5158 df-id 5489 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-ov 7278 df-er 8498 df-en 8734 df-dom 8735 df-sdom 8736 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 |
This theorem is referenced by: colinearalglem4 27277 |
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