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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 11328 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 ≤ 𝐵 ∨ 𝐵 ≤ 𝐴)) | |
| 6 | 3, 4, 5 | syl2anc 596 | . 2 ⊢ (𝜑 → (𝐴 ≤ 𝐵 ∨ 𝐵 ≤ 𝐴)) |
| 7 | 1, 2, 6 | mpjaodan 973 | 1 ⊢ (𝜑 → 𝜓) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∨ wo 861 ∈ wcel 2146 class class class wbr 5114 ℝcr 11117 ≤ cle 11262 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2738 ax-sep 5262 ax-nul 5274 ax-pow 5341 ax-pr 5409 ax-un 7745 ax-resscn 11175 ax-pre-lttri 11192 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-nfc 2915 df-ne 2962 df-nel 3068 df-ral 3083 df-rex 3093 df-rab 3420 df-v 3460 df-sbc 3748 df-csb 3857 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-nul 4290 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4878 df-br 5115 df-opab 5179 df-mpt 5198 df-id 5561 df-xp 5672 df-rel 5673 df-cnv 5674 df-co 5675 df-dm 5676 df-rn 5677 df-res 5678 df-ima 5679 df-iota 6499 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-er 8703 df-en 8953 df-dom 8954 df-sdom 8955 df-pnf 11263 df-mnf 11264 df-xr 11265 df-ltxr 11266 df-le 11267 |
| This theorem is used by: wloglei 11764 nn2ge 12281 max0sub 13240 leabs 15376 max0add 15387 limsupgre 15558 ntrivcvgmul 15982 1arithlem4 17011 mndodcong 19643 metustto 24747 reconn 25023 dyaddisj 25792 volcn 25802 ditgcl 26054 ditgswap 26055 ditgsplit 26057 dvfsumlem3 26224 ftc2ditg 26242 coseq0negpitopi 26705 asinlem3 27073 atanlogaddlem 27115 atanlogadd 27116 ppiub 27405 dchrisum0 27721 pntrmax 27765 padicabv 27831 sgnval2 33117 oexpled 33217 nacsfix 43484 acongrep 43748 hbt 43898 fzunt1d 44224 |
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