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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 11283 | . 2 ⊢ (𝐴 ∈ ℝ → 𝐴 ∈ ℝ*) | |
| 2 | rexr 11283 | . 2 ⊢ (𝐵 ∈ ℝ → 𝐵 ∈ ℝ*) | |
| 3 | xrmax2 13232 | . 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 4485 class class class wbr 5107 ℝcr 11127 ℝ*cxr 11270 ≤ cle 11272 |
| 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 2215 ax-ext 2734 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 ax-un 7740 ax-cnex 11184 ax-resscn 11185 ax-pre-lttri 11202 ax-pre-lttrn 11203 |
| 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 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-br 5108 df-opab 5172 df-mpt 5191 df-id 5554 df-po 5567 df-so 5568 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-er 8700 df-en 8957 df-dom 8958 df-sdom 8959 df-pnf 11273 df-mnf 11274 df-xr 11275 df-ltxr 11276 df-le 11277 |
| This theorem is used by: lemaxle 13251 z2ge 13254 ssfzunsnext 13628 uzsup 13928 expmulnbnd 14303 discr1 14307 rexuzre 15444 caubnd 15450 limsupgre 15572 limsupbnd2 15574 rlim3 15589 lo1bdd2 15615 o1lo1 15628 rlimclim1 15636 lo1mul 15719 rlimno1 15745 cvgrat 15976 ruclem10 16333 bitsfzo 16531 1arith 17025 evth 25193 ioombl1lem4 25795 itg2monolem3 25986 itgle 26044 ibladdlem 26054 plyaddlem1 26446 coeaddlem 26482 o1cxp 27219 cxp2lim 27221 cxploglim2 27223 ftalem1 27317 ftalem2 27318 chtppilim 27719 dchrisumlem3 27735 ostth2lem2 27878 ostth2lem3 27879 ostth2lem4 27880 ostth3 27882 knoppndvlem18 37234 ibladdnclem 38433 ftc1anclem5 38454 irrapxlem4 43674 irrapxlem5 43675 rexabslelem 46254 uzublem 46266 max2d 46294 climsuse 46446 limsupubuzlem 46548 limsupmnfuzlem 46562 limsupequzmptlem 46564 limsupre3uzlem 46571 liminflelimsuplem 46611 ioodvbdlimc1lem2 46768 ioodvbdlimc2lem 46770 hoidifhspdmvle 47456 |
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