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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 11390 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 ≤ 𝐵 ∨ 𝐵 ≤ 𝐴)) | |
6 | 3, 4, 5 | syl2anc 583 | . 2 ⊢ (𝜑 → (𝐴 ≤ 𝐵 ∨ 𝐵 ≤ 𝐴)) |
7 | 1, 2, 6 | mpjaodan 959 | 1 ⊢ (𝜑 → 𝜓) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 ∨ wo 846 ∈ wcel 2108 class class class wbr 5166 ℝcr 11183 ≤ cle 11325 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1793 ax-4 1807 ax-5 1909 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2158 ax-12 2178 ax-ext 2711 ax-sep 5317 ax-nul 5324 ax-pow 5383 ax-pr 5447 ax-un 7770 ax-resscn 11241 ax-pre-lttri 11258 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 847 df-3an 1089 df-tru 1540 df-fal 1550 df-ex 1778 df-nf 1782 df-sb 2065 df-mo 2543 df-eu 2572 df-clab 2718 df-cleq 2732 df-clel 2819 df-nfc 2895 df-ne 2947 df-nel 3053 df-ral 3068 df-rex 3077 df-rab 3444 df-v 3490 df-sbc 3805 df-csb 3922 df-dif 3979 df-un 3981 df-in 3983 df-ss 3993 df-nul 4353 df-if 4549 df-pw 4624 df-sn 4649 df-pr 4651 df-op 4655 df-uni 4932 df-br 5167 df-opab 5229 df-mpt 5250 df-id 5593 df-xp 5706 df-rel 5707 df-cnv 5708 df-co 5709 df-dm 5710 df-rn 5711 df-res 5712 df-ima 5713 df-iota 6525 df-fun 6575 df-fn 6576 df-f 6577 df-f1 6578 df-fo 6579 df-f1o 6580 df-fv 6581 df-er 8763 df-en 9004 df-dom 9005 df-sdom 9006 df-pnf 11326 df-mnf 11327 df-xr 11328 df-ltxr 11329 df-le 11330 |
This theorem is referenced by: wloglei 11822 nn2ge 12320 max0sub 13258 leabs 15348 max0add 15359 limsupgre 15527 ntrivcvgmul 15950 1arithlem4 16973 mndodcong 19584 metustto 24587 reconn 24869 dyaddisj 25650 volcn 25660 ditgcl 25913 ditgswap 25914 ditgsplit 25916 dvfsumlem3 26089 ftc2ditg 26107 coseq0negpitopi 26563 asinlem3 26932 atanlogaddlem 26974 atanlogadd 26975 ppiub 27266 dchrisum0 27582 pntrmax 27626 padicabv 27692 nacsfix 42668 acongrep 42937 hbt 43087 fzunt1d 43419 |
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