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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 9918 | . . . 4 ⊢ 1 ∈ ℝ | |
2 | letric 10016 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 1 ∈ ℝ) → (𝐴 ≤ 1 ∨ 1 ≤ 𝐴)) | |
3 | 1, 2 | mpan2 703 | . . 3 ⊢ (𝐴 ∈ ℝ → (𝐴 ≤ 1 ∨ 1 ≤ 𝐴)) |
4 | 0re 9919 | . . . . . 6 ⊢ 0 ∈ ℝ | |
5 | letric 10016 | . . . . . 6 ⊢ ((𝐴 ∈ ℝ ∧ 0 ∈ ℝ) → (𝐴 ≤ 0 ∨ 0 ≤ 𝐴)) | |
6 | 4, 5 | mpan2 703 | . . . . 5 ⊢ (𝐴 ∈ ℝ → (𝐴 ≤ 0 ∨ 0 ≤ 𝐴)) |
7 | pm3.21 463 | . . . . . 6 ⊢ (𝐴 ≤ 1 → (0 ≤ 𝐴 → (0 ≤ 𝐴 ∧ 𝐴 ≤ 1))) | |
8 | 7 | orim2d 881 | . . . . 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 880 | . . 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 1032 | . 2 ⊢ ((𝐴 ≤ 0 ∨ (0 ≤ 𝐴 ∧ 𝐴 ≤ 1) ∨ 1 ≤ 𝐴) ↔ ((𝐴 ≤ 0 ∨ (0 ≤ 𝐴 ∧ 𝐴 ≤ 1)) ∨ 1 ≤ 𝐴)) | |
13 | 11, 12 | sylibr 223 | 1 ⊢ (𝐴 ∈ ℝ → (𝐴 ≤ 0 ∨ (0 ≤ 𝐴 ∧ 𝐴 ≤ 1) ∨ 1 ≤ 𝐴)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∨ wo 382 ∧ wa 383 ∨ w3o 1030 ∈ wcel 1977 class class class wbr 4583 ℝcr 9814 0cc0 9815 1c1 9816 ≤ cle 9954 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 ax-resscn 9872 ax-1cn 9873 ax-icn 9874 ax-addcl 9875 ax-addrcl 9876 ax-mulcl 9877 ax-mulrcl 9878 ax-i2m1 9883 ax-1ne0 9884 ax-rnegex 9886 ax-rrecex 9887 ax-cnre 9888 ax-pre-lttri 9889 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-nel 2783 df-ral 2901 df-rex 2902 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-op 4132 df-uni 4373 df-br 4584 df-opab 4644 df-mpt 4645 df-id 4953 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-ov 6552 df-er 7629 df-en 7842 df-dom 7843 df-sdom 7844 df-pnf 9955 df-mnf 9956 df-xr 9957 df-ltxr 9958 df-le 9959 |
This theorem is referenced by: colinearalglem4 25589 |
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