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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 11246 | . . 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 5085 ℝcr 11037 ≤ cle 11180 |
| 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 2708 ax-sep 5231 ax-nul 5241 ax-pow 5307 ax-pr 5375 ax-un 7689 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 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3062 df-rab 3390 df-v 3431 df-sbc 3729 df-csb 3838 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-br 5086 df-opab 5148 df-mpt 5167 df-id 5526 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-iota 6454 df-fun 6500 df-fn 6501 df-f 6502 df-f1 6503 df-fo 6504 df-f1o 6505 df-fv 6506 df-er 8643 df-en 8894 df-dom 8895 df-sdom 8896 df-pnf 11181 df-mnf 11182 df-xr 11183 df-ltxr 11184 df-le 11185 |
| This theorem is referenced by: wloglei 11682 nn2ge 12204 max0sub 13148 leabs 15261 max0add 15272 limsupgre 15443 ntrivcvgmul 15867 1arithlem4 16897 mndodcong 19517 metustto 24518 reconn 24794 dyaddisj 25563 volcn 25573 ditgcl 25825 ditgswap 25826 ditgsplit 25828 dvfsumlem3 25995 ftc2ditg 26013 coseq0negpitopi 26467 asinlem3 26835 atanlogaddlem 26877 atanlogadd 26878 ppiub 27167 dchrisum0 27483 pntrmax 27527 padicabv 27593 sgnval2 32808 oexpled 32920 nacsfix 43144 acongrep 43408 hbt 43558 fzunt1d 43884 |
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