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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 11385 | . 2 ⊢ (𝐴 ∈ ℝ → 𝐴 ∈ ℝ*) | |
| 2 | rexr 11385 | . 2 ⊢ (𝐵 ∈ ℝ → 𝐵 ∈ ℝ*) | |
| 3 | xrmax2 13336 | . 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 2147 ifcif 4485 class class class wbr 5106 ℝcr 11229 ℝ*cxr 11372 ≤ cle 11374 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5253 ax-nul 5264 ax-pow 5332 ax-pr 5396 ax-un 7778 ax-cnex 11286 ax-resscn 11287 ax-pre-lttri 11304 ax-pre-lttrn 11305 |
| 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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-br 5107 df-opab 5172 df-mpt 5191 df-id 5551 df-po 5564 df-so 5565 df-xp 5662 df-rel 5663 df-cnv 5664 df-co 5665 df-dm 5666 df-rn 5667 df-res 5668 df-ima 5669 df-iota 6515 df-fun 6563 df-fn 6564 df-f 6565 df-f1 6566 df-fo 6567 df-f1o 6568 df-fv 6569 df-er 8748 df-en 9005 df-dom 9006 df-sdom 9007 df-pnf 11375 df-mnf 11376 df-xr 11377 df-ltxr 11378 df-le 11379 |
| This theorem is used by: lemaxle 13355 z2ge 13358 ssfzunsnext 13733 uzsup 14033 expmulnbnd 14409 discr1 14413 rexuzre 15552 caubnd 15558 limsupgre 15680 limsupbnd2 15682 rlim3 15697 lo1bdd2 15723 o1lo1 15736 rlimclim1 15744 lo1mul 15827 rlimno1 15853 cvgrat 16084 ruclem10 16439 bitsfzo 16637 1arith 17137 evth 25313 ioombl1lem4 25915 itg2monolem3 26106 itgle 26163 ibladdlem 26173 plyaddlem1 26565 coeaddlem 26601 o1cxp 27335 cxp2lim 27337 cxploglim2 27339 ftalem1 27433 ftalem2 27434 chtppilim 27835 dchrisumlem3 27851 ostth2lem2 27994 ostth2lem3 27995 ostth2lem4 27996 ostth3 27998 knoppndvlem18 37586 ibladdnclem 38799 ftc1anclem5 38820 irrapxlem4 44036 irrapxlem5 44037 rexabslelem 46643 uzublem 46655 max2d 46683 climsuse 46835 limsupubuzlem 46937 limsupmnfuzlem 46951 limsupequzmptlem 46953 limsupre3uzlem 46960 liminflelimsuplem 47000 ioodvbdlimc1lem2 47157 ioodvbdlimc2lem 47159 hoidifhspdmvle 47845 |
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