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| Mirrors > Home > MPE Home > Th. List > o1sub | Structured version Visualization version GIF version | ||
| Description: The difference of two eventually bounded functions is eventually bounded. (Contributed by Mario Carneiro, 15-Sep-2014.) (Proof shortened by Fan Zheng, 14-Jul-2016.) |
| Ref | Expression |
|---|---|
| o1sub | ⊢ ((𝐹 ∈ 𝑂(1) ∧ 𝐺 ∈ 𝑂(1)) → (𝐹 ∘f − 𝐺) ∈ 𝑂(1)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | readdcl 11146 | . 2 ⊢ ((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) → (𝑥 + 𝑦) ∈ ℝ) | |
| 2 | subcl 11419 | . 2 ⊢ ((𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) → (𝑚 − 𝑛) ∈ ℂ) | |
| 3 | simp2l 1209 | . . . . . 6 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → 𝑚 ∈ ℂ) | |
| 4 | simp2r 1210 | . . . . . 6 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → 𝑛 ∈ ℂ) | |
| 5 | 3, 4 | subcld 11532 | . . . . 5 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → (𝑚 − 𝑛) ∈ ℂ) |
| 6 | 5 | abscld 15442 | . . . 4 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → (abs‘(𝑚 − 𝑛)) ∈ ℝ) |
| 7 | 3 | abscld 15442 | . . . . 5 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → (abs‘𝑚) ∈ ℝ) |
| 8 | 4 | abscld 15442 | . . . . 5 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → (abs‘𝑛) ∈ ℝ) |
| 9 | 7, 8 | readdcld 11201 | . . . 4 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → ((abs‘𝑚) + (abs‘𝑛)) ∈ ℝ) |
| 10 | simp1l 1207 | . . . . 5 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → 𝑥 ∈ ℝ) | |
| 11 | simp1r 1208 | . . . . 5 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → 𝑦 ∈ ℝ) | |
| 12 | 10, 11 | readdcld 11201 | . . . 4 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → (𝑥 + 𝑦) ∈ ℝ) |
| 13 | 3, 4 | abs2dif2d 15464 | . . . 4 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → (abs‘(𝑚 − 𝑛)) ≤ ((abs‘𝑚) + (abs‘𝑛))) |
| 14 | simp3l 1211 | . . . . 5 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → (abs‘𝑚) ≤ 𝑥) | |
| 15 | simp3r 1212 | . . . . 5 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → (abs‘𝑛) ≤ 𝑦) | |
| 16 | 7, 8, 10, 11, 14, 15 | le2addd 11796 | . . . 4 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → ((abs‘𝑚) + (abs‘𝑛)) ≤ (𝑥 + 𝑦)) |
| 17 | 6, 9, 12, 13, 16 | letrd 11330 | . . 3 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → (abs‘(𝑚 − 𝑛)) ≤ (𝑥 + 𝑦)) |
| 18 | 17 | 3expia 1130 | . 2 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ)) → (((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦) → (abs‘(𝑚 − 𝑛)) ≤ (𝑥 + 𝑦))) |
| 19 | 1, 2, 18 | o1of2 15616 | 1 ⊢ ((𝐹 ∈ 𝑂(1) ∧ 𝐺 ∈ 𝑂(1)) → (𝐹 ∘f − 𝐺) ∈ 𝑂(1)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 398 ∧ w3a 1095 ∈ wcel 2136 class class class wbr 5094 ‘cfv 6510 (class class class)co 7385 ∘f cof 7647 ℂcc 11061 ℝcr 11062 + caddc 11066 ≤ cle 11207 − cmin 11404 abscabs 15237 𝑂(1)co1 15489 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1809 ax-4 1823 ax-5 1924 ax-6 1981 ax-7 2022 ax-8 2138 ax-9 2146 ax-10 2169 ax-11 2185 ax-12 2206 ax-ext 2728 ax-rep 5221 ax-sep 5240 ax-nul 5250 ax-pow 5316 ax-pr 5384 ax-un 7707 ax-cnex 11119 ax-resscn 11120 ax-1cn 11121 ax-icn 11122 ax-addcl 11123 ax-addrcl 11124 ax-mulcl 11125 ax-mulrcl 11126 ax-mulcom 11127 ax-addass 11128 ax-mulass 11129 ax-distr 11130 ax-i2m1 11131 ax-1ne0 11132 ax-1rid 11133 ax-rnegex 11134 ax-rrecex 11135 ax-cnre 11136 ax-pre-lttri 11137 ax-pre-lttrn 11138 ax-pre-ltadd 11139 ax-pre-mulgt0 11140 ax-pre-sup 11141 |
| This theorem depends on definitions: df-bi 209 df-an 399 df-or 857 df-3or 1096 df-3an 1097 df-tru 1557 df-fal 1567 df-ex 1794 df-nf 1798 df-sb 2085 df-mo 2560 df-eu 2590 df-clab 2735 df-cleq 2748 df-clel 2831 df-nfc 2905 df-ne 2952 df-nel 3056 df-ral 3071 df-rex 3081 df-rmo 3361 df-reu 3362 df-rab 3409 df-v 3450 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4281 df-if 4475 df-pw 4551 df-sn 4577 df-pr 4579 df-op 4583 df-uni 4860 df-iun 4945 df-br 5095 df-opab 5157 df-mpt 5176 df-tr 5202 df-id 5535 df-eprel 5540 df-po 5548 df-so 5549 df-fr 5593 df-we 5595 df-xp 5646 df-rel 5647 df-cnv 5648 df-co 5649 df-dm 5650 df-rn 5651 df-res 5652 df-ima 5653 df-pred 6277 df-ord 6338 df-on 6339 df-lim 6340 df-suc 6341 df-iota 6466 df-fun 6512 df-fn 6513 df-f 6514 df-f1 6515 df-fo 6516 df-f1o 6517 df-fv 6518 df-riota 7342 df-ov 7388 df-oprab 7389 df-mpo 7390 df-of 7649 df-om 7836 df-2nd 7960 df-frecs 8250 df-wrecs 8281 df-recs 8330 df-rdg 8369 df-er 8666 df-pm 8799 df-en 8917 df-dom 8918 df-sdom 8919 df-sup 9378 df-pnf 11208 df-mnf 11209 df-xr 11210 df-ltxr 11211 df-le 11212 df-sub 11406 df-neg 11407 df-div 11835 df-nn 12201 df-2 12270 df-3 12271 df-n0 12472 df-z 12559 df-uz 12830 df-rp 12984 df-ico 13345 df-seq 14005 df-exp 14065 df-cj 15102 df-re 15103 df-im 15104 df-sqrt 15238 df-abs 15239 df-o1 15493 |
| This theorem is referenced by: o1sub2 15629 o1dif 15633 vmadivsum 27516 rpvmasumlem 27521 selberglem1 27579 selberg2 27585 pntrsumo1 27599 selbergr 27602 |
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