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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 11210 | . 2 ⊢ ((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) → (𝑥 + 𝑦) ∈ ℝ) | |
| 2 | subcl 11483 | . 2 ⊢ ((𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) → (𝑚 − 𝑛) ∈ ℂ) | |
| 3 | simp2l 1218 | . . . . . 6 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → 𝑚 ∈ ℂ) | |
| 4 | simp2r 1219 | . . . . . 6 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → 𝑛 ∈ ℂ) | |
| 5 | 3, 4 | subcld 11596 | . . . . 5 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → (𝑚 − 𝑛) ∈ ℂ) |
| 6 | 5 | abscld 15528 | . . . 4 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → (abs‘(𝑚 − 𝑛)) ∈ ℝ) |
| 7 | 3 | abscld 15528 | . . . . 5 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → (abs‘𝑚) ∈ ℝ) |
| 8 | 4 | abscld 15528 | . . . . 5 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → (abs‘𝑛) ∈ ℝ) |
| 9 | 7, 8 | readdcld 11265 | . . . 4 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → ((abs‘𝑚) + (abs‘𝑛)) ∈ ℝ) |
| 10 | simp1l 1216 | . . . . 5 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → 𝑥 ∈ ℝ) | |
| 11 | simp1r 1217 | . . . . 5 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → 𝑦 ∈ ℝ) | |
| 12 | 10, 11 | readdcld 11265 | . . . 4 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → (𝑥 + 𝑦) ∈ ℝ) |
| 13 | 3, 4 | abs2dif2d 15550 | . . . 4 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → (abs‘(𝑚 − 𝑛)) ≤ ((abs‘𝑚) + (abs‘𝑛))) |
| 14 | simp3l 1220 | . . . . 5 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → (abs‘𝑚) ≤ 𝑥) | |
| 15 | simp3r 1221 | . . . . 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 11860 | . . . 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 11394 | . . 3 ⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ (𝑚 ∈ ℂ ∧ 𝑛 ∈ ℂ) ∧ ((abs‘𝑚) ≤ 𝑥 ∧ (abs‘𝑛) ≤ 𝑦)) → (abs‘(𝑚 − 𝑛)) ≤ (𝑥 + 𝑦)) |
| 18 | 17 | 3expia 1139 | . 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 15702 | 1 ⊢ ((𝐹 ∈ 𝑂(1) ∧ 𝐺 ∈ 𝑂(1)) → (𝐹 ∘f − 𝐺) ∈ 𝑂(1)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∧ w3a 1103 ∈ wcel 2145 class class class wbr 5107 ‘cfv 6537 (class class class)co 7416 ∘f cof 7679 ℂcc 11125 ℝcr 11126 + caddc 11130 ≤ cle 11271 − cmin 11468 abscabs 15323 𝑂(1)co1 15575 |
| 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-rep 5236 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 ax-un 7739 ax-cnex 11183 ax-resscn 11184 ax-1cn 11185 ax-icn 11186 ax-addcl 11187 ax-addrcl 11188 ax-mulcl 11189 ax-mulrcl 11190 ax-mulcom 11191 ax-addass 11192 ax-mulass 11193 ax-distr 11194 ax-i2m1 11195 ax-1ne0 11196 ax-1rid 11197 ax-rnegex 11198 ax-rrecex 11199 ax-cnre 11200 ax-pre-lttri 11201 ax-pre-lttrn 11202 ax-pre-ltadd 11203 ax-pre-mulgt0 11204 ax-pre-sup 11205 |
| 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-rmo 3367 df-reu 3368 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-pss 3922 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-iun 4956 df-br 5108 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5554 df-eprel 5559 df-po 5567 df-so 5568 df-fr 5612 df-we 5614 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-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 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-riota 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-of 7681 df-om 7866 df-2nd 7990 df-frecs 8283 df-wrecs 8314 df-recs 8363 df-rdg 8402 df-er 8699 df-pm 8832 df-en 8956 df-dom 8957 df-sdom 8958 df-sup 9415 df-pnf 11272 df-mnf 11273 df-xr 11274 df-ltxr 11275 df-le 11276 df-sub 11470 df-neg 11471 df-div 11899 df-nn 12261 df-2 12330 df-3 12331 df-n0 12532 df-z 12619 df-uz 12891 df-rp 13045 df-ico 13406 df-seq 14068 df-exp 14128 df-cj 15188 df-re 15189 df-im 15190 df-sqrt 15324 df-abs 15325 df-o1 15579 |
| This theorem is used by: o1sub2 15715 o1dif 15719 vmadivsum 27719 rpvmasumlem 27724 selberglem1 27782 selberg2 27788 pntrsumo1 27802 selbergr 27805 |
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