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| Mirrors > Home > MPE Home > Th. List > max2 | Structured version Visualization version GIF version | ||
| Description: A number is less than or equal to the maximum of it and another. (Contributed by NM, 3-Apr-2005.) |
| Ref | Expression |
|---|---|
| max2 | ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → 𝐵 ≤ if(𝐴 ≤ 𝐵, 𝐵, 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rexr 11336 | . 2 ⊢ (𝐴 ∈ ℝ → 𝐴 ∈ ℝ*) | |
| 2 | rexr 11336 | . 2 ⊢ (𝐵 ∈ ℝ → 𝐵 ∈ ℝ*) | |
| 3 | xrmax2 13287 | . 2 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → 𝐵 ≤ if(𝐴 ≤ 𝐵, 𝐵, 𝐴)) | |
| 4 | 1, 2, 3 | syl2an 608 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → 𝐵 ≤ if(𝐴 ≤ 𝐵, 𝐵, 𝐴)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∈ wcel 2145 ifcif 4482 class class class wbr 5103 ℝcr 11180 ℝ*cxr 11323 ≤ cle 11325 |
| 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 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7740 ax-cnex 11237 ax-resscn 11238 ax-pre-lttri 11255 ax-pre-lttrn 11256 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5546 df-po 5559 df-so 5560 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-iota 6487 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-er 8701 df-en 8958 df-dom 8959 df-sdom 8960 df-pnf 11326 df-mnf 11327 df-xr 11328 df-ltxr 11329 df-le 11330 |
| This theorem is used by: lemaxle 13306 z2ge 13309 ssfzunsnext 13683 uzsup 13983 expmulnbnd 14359 discr1 14363 rexuzre 15500 caubnd 15506 limsupgre 15628 limsupbnd2 15630 rlim3 15645 lo1bdd2 15671 o1lo1 15684 rlimclim1 15692 lo1mul 15775 rlimno1 15801 cvgrat 16032 ruclem10 16387 bitsfzo 16585 1arith 17085 evth 25260 ioombl1lem4 25862 itg2monolem3 26053 itgle 26110 ibladdlem 26120 plyaddlem1 26512 coeaddlem 26548 o1cxp 27284 cxp2lim 27286 cxploglim2 27288 ftalem1 27382 ftalem2 27383 chtppilim 27784 dchrisumlem3 27800 ostth2lem2 27943 ostth2lem3 27944 ostth2lem4 27945 ostth3 27947 knoppndvlem18 37365 ibladdnclem 38562 ftc1anclem5 38583 irrapxlem4 43785 irrapxlem5 43786 rexabslelem 46372 uzublem 46384 max2d 46412 climsuse 46564 limsupubuzlem 46666 limsupmnfuzlem 46680 limsupequzmptlem 46682 limsupre3uzlem 46689 liminflelimsuplem 46729 ioodvbdlimc1lem2 46886 ioodvbdlimc2lem 46888 hoidifhspdmvle 47574 |
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