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| Mirrors > Home > MPE Home > Th. List > lecasei | Structured version Visualization version GIF version | ||
| Description: Ordering elimination by cases. (Contributed by NM, 6-Jul-2007.) |
| Ref | Expression |
|---|---|
| lecase.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
| lecase.2 | ⊢ (𝜑 → 𝐵 ∈ ℝ) |
| lecase.3 | ⊢ ((𝜑 ∧ 𝐴 ≤ 𝐵) → 𝜓) |
| lecase.4 | ⊢ ((𝜑 ∧ 𝐵 ≤ 𝐴) → 𝜓) |
| Ref | Expression |
|---|---|
| lecasei | ⊢ (𝜑 → 𝜓) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | lecase.3 | . 2 ⊢ ((𝜑 ∧ 𝐴 ≤ 𝐵) → 𝜓) | |
| 2 | lecase.4 | . 2 ⊢ ((𝜑 ∧ 𝐵 ≤ 𝐴) → 𝜓) | |
| 3 | lecase.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
| 4 | lecase.2 | . . 3 ⊢ (𝜑 → 𝐵 ∈ ℝ) | |
| 5 | letric 11245 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 ≤ 𝐵 ∨ 𝐵 ≤ 𝐴)) | |
| 6 | 3, 4, 5 | syl2anc 585 | . 2 ⊢ (𝜑 → (𝐴 ≤ 𝐵 ∨ 𝐵 ≤ 𝐴)) |
| 7 | 1, 2, 6 | mpjaodan 961 | 1 ⊢ (𝜑 → 𝜓) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 ∨ wo 848 ∈ wcel 2114 class class class wbr 5100 ℝcr 11037 ≤ cle 11179 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5243 ax-nul 5253 ax-pow 5312 ax-pr 5379 ax-un 7690 ax-resscn 11095 ax-pre-lttri 11112 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-opab 5163 df-mpt 5182 df-id 5527 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-iota 6456 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-fv 6508 df-er 8645 df-en 8896 df-dom 8897 df-sdom 8898 df-pnf 11180 df-mnf 11181 df-xr 11182 df-ltxr 11183 df-le 11184 |
| This theorem is referenced by: wloglei 11681 nn2ge 12184 max0sub 13123 leabs 15234 max0add 15245 limsupgre 15416 ntrivcvgmul 15837 1arithlem4 16866 mndodcong 19483 metustto 24509 reconn 24785 dyaddisj 25565 volcn 25575 ditgcl 25827 ditgswap 25828 ditgsplit 25830 dvfsumlem3 26003 ftc2ditg 26021 coseq0negpitopi 26480 asinlem3 26849 atanlogaddlem 26891 atanlogadd 26892 ppiub 27183 dchrisum0 27499 pntrmax 27543 padicabv 27609 sgnval2 32824 oexpled 32938 nacsfix 43066 acongrep 43334 hbt 43484 fzunt1d 43810 |
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