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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 11273 | . 2 ⊢ (𝐴 ∈ ℝ → 𝐴 ∈ ℝ*) | |
| 2 | rexr 11273 | . 2 ⊢ (𝐵 ∈ ℝ → 𝐵 ∈ ℝ*) | |
| 3 | xrmax2 13220 | . 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 2146 ifcif 4492 class class class wbr 5114 ℝcr 11117 ℝ*cxr 11260 ≤ 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-cnex 11174 ax-resscn 11175 ax-pre-lttri 11192 ax-pre-lttrn 11193 |
| 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 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-po 5574 df-so 5575 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: lemaxle 13239 z2ge 13242 ssfzunsnext 13616 uzsup 13916 expmulnbnd 14291 discr1 14295 rexuzre 15430 caubnd 15436 limsupgre 15558 limsupbnd2 15560 rlim3 15575 lo1bdd2 15601 o1lo1 15614 rlimclim1 15622 lo1mul 15705 rlimno1 15731 cvgrat 15963 ruclem10 16320 bitsfzo 16518 1arith 17012 evth 25155 ioombl1lem4 25757 itg2monolem3 25948 itgle 26006 ibladdlem 26016 plyaddlem1 26407 coeaddlem 26443 o1cxp 27176 cxp2lim 27178 cxploglim2 27180 ftalem1 27274 ftalem2 27275 chtppilim 27676 dchrisumlem3 27692 ostth2lem2 27835 ostth2lem3 27836 ostth2lem4 27837 ostth3 27839 knoppndvlem18 37159 ibladdnclem 38368 ftc1anclem5 38389 irrapxlem4 43593 irrapxlem5 43594 rexabslelem 46173 uzublem 46185 max2d 46213 climsuse 46365 limsupubuzlem 46467 limsupmnfuzlem 46481 limsupequzmptlem 46483 limsupre3uzlem 46490 liminflelimsuplem 46530 ioodvbdlimc1lem2 46687 ioodvbdlimc2lem 46689 hoidifhspdmvle 47375 |
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