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Mirrors > Home > MPE Home > Th. List > Mathboxes > irrapxlem6 | Structured version Visualization version GIF version |
Description: Lemma for irrapx1 40650. Explicit description of a non-closed set. (Contributed by Stefan O'Rear, 13-Sep-2014.) |
Ref | Expression |
---|---|
irrapxlem6 | ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐵 ∈ ℝ+) → ∃𝑥 ∈ {𝑦 ∈ ℚ ∣ (0 < 𝑦 ∧ (abs‘(𝑦 − 𝐴)) < ((denom‘𝑦)↑-2))} (abs‘(𝑥 − 𝐴)) < 𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simplr 766 | . . . 4 ⊢ ((((𝐴 ∈ ℝ+ ∧ 𝐵 ∈ ℝ+) ∧ 𝑎 ∈ ℚ) ∧ (0 < 𝑎 ∧ (abs‘(𝑎 − 𝐴)) < 𝐵 ∧ (abs‘(𝑎 − 𝐴)) < ((denom‘𝑎)↑-2))) → 𝑎 ∈ ℚ) | |
2 | simpr1 1193 | . . . . 5 ⊢ ((((𝐴 ∈ ℝ+ ∧ 𝐵 ∈ ℝ+) ∧ 𝑎 ∈ ℚ) ∧ (0 < 𝑎 ∧ (abs‘(𝑎 − 𝐴)) < 𝐵 ∧ (abs‘(𝑎 − 𝐴)) < ((denom‘𝑎)↑-2))) → 0 < 𝑎) | |
3 | simpr3 1195 | . . . . 5 ⊢ ((((𝐴 ∈ ℝ+ ∧ 𝐵 ∈ ℝ+) ∧ 𝑎 ∈ ℚ) ∧ (0 < 𝑎 ∧ (abs‘(𝑎 − 𝐴)) < 𝐵 ∧ (abs‘(𝑎 − 𝐴)) < ((denom‘𝑎)↑-2))) → (abs‘(𝑎 − 𝐴)) < ((denom‘𝑎)↑-2)) | |
4 | 2, 3 | jca 512 | . . . 4 ⊢ ((((𝐴 ∈ ℝ+ ∧ 𝐵 ∈ ℝ+) ∧ 𝑎 ∈ ℚ) ∧ (0 < 𝑎 ∧ (abs‘(𝑎 − 𝐴)) < 𝐵 ∧ (abs‘(𝑎 − 𝐴)) < ((denom‘𝑎)↑-2))) → (0 < 𝑎 ∧ (abs‘(𝑎 − 𝐴)) < ((denom‘𝑎)↑-2))) |
5 | breq2 5078 | . . . . . 6 ⊢ (𝑦 = 𝑎 → (0 < 𝑦 ↔ 0 < 𝑎)) | |
6 | fvoveq1 7298 | . . . . . . 7 ⊢ (𝑦 = 𝑎 → (abs‘(𝑦 − 𝐴)) = (abs‘(𝑎 − 𝐴))) | |
7 | fveq2 6774 | . . . . . . . 8 ⊢ (𝑦 = 𝑎 → (denom‘𝑦) = (denom‘𝑎)) | |
8 | 7 | oveq1d 7290 | . . . . . . 7 ⊢ (𝑦 = 𝑎 → ((denom‘𝑦)↑-2) = ((denom‘𝑎)↑-2)) |
9 | 6, 8 | breq12d 5087 | . . . . . 6 ⊢ (𝑦 = 𝑎 → ((abs‘(𝑦 − 𝐴)) < ((denom‘𝑦)↑-2) ↔ (abs‘(𝑎 − 𝐴)) < ((denom‘𝑎)↑-2))) |
10 | 5, 9 | anbi12d 631 | . . . . 5 ⊢ (𝑦 = 𝑎 → ((0 < 𝑦 ∧ (abs‘(𝑦 − 𝐴)) < ((denom‘𝑦)↑-2)) ↔ (0 < 𝑎 ∧ (abs‘(𝑎 − 𝐴)) < ((denom‘𝑎)↑-2)))) |
11 | 10 | elrab 3624 | . . . 4 ⊢ (𝑎 ∈ {𝑦 ∈ ℚ ∣ (0 < 𝑦 ∧ (abs‘(𝑦 − 𝐴)) < ((denom‘𝑦)↑-2))} ↔ (𝑎 ∈ ℚ ∧ (0 < 𝑎 ∧ (abs‘(𝑎 − 𝐴)) < ((denom‘𝑎)↑-2)))) |
12 | 1, 4, 11 | sylanbrc 583 | . . 3 ⊢ ((((𝐴 ∈ ℝ+ ∧ 𝐵 ∈ ℝ+) ∧ 𝑎 ∈ ℚ) ∧ (0 < 𝑎 ∧ (abs‘(𝑎 − 𝐴)) < 𝐵 ∧ (abs‘(𝑎 − 𝐴)) < ((denom‘𝑎)↑-2))) → 𝑎 ∈ {𝑦 ∈ ℚ ∣ (0 < 𝑦 ∧ (abs‘(𝑦 − 𝐴)) < ((denom‘𝑦)↑-2))}) |
13 | simpr2 1194 | . . 3 ⊢ ((((𝐴 ∈ ℝ+ ∧ 𝐵 ∈ ℝ+) ∧ 𝑎 ∈ ℚ) ∧ (0 < 𝑎 ∧ (abs‘(𝑎 − 𝐴)) < 𝐵 ∧ (abs‘(𝑎 − 𝐴)) < ((denom‘𝑎)↑-2))) → (abs‘(𝑎 − 𝐴)) < 𝐵) | |
14 | fvoveq1 7298 | . . . . 5 ⊢ (𝑥 = 𝑎 → (abs‘(𝑥 − 𝐴)) = (abs‘(𝑎 − 𝐴))) | |
15 | 14 | breq1d 5084 | . . . 4 ⊢ (𝑥 = 𝑎 → ((abs‘(𝑥 − 𝐴)) < 𝐵 ↔ (abs‘(𝑎 − 𝐴)) < 𝐵)) |
16 | 15 | rspcev 3561 | . . 3 ⊢ ((𝑎 ∈ {𝑦 ∈ ℚ ∣ (0 < 𝑦 ∧ (abs‘(𝑦 − 𝐴)) < ((denom‘𝑦)↑-2))} ∧ (abs‘(𝑎 − 𝐴)) < 𝐵) → ∃𝑥 ∈ {𝑦 ∈ ℚ ∣ (0 < 𝑦 ∧ (abs‘(𝑦 − 𝐴)) < ((denom‘𝑦)↑-2))} (abs‘(𝑥 − 𝐴)) < 𝐵) |
17 | 12, 13, 16 | syl2anc 584 | . 2 ⊢ ((((𝐴 ∈ ℝ+ ∧ 𝐵 ∈ ℝ+) ∧ 𝑎 ∈ ℚ) ∧ (0 < 𝑎 ∧ (abs‘(𝑎 − 𝐴)) < 𝐵 ∧ (abs‘(𝑎 − 𝐴)) < ((denom‘𝑎)↑-2))) → ∃𝑥 ∈ {𝑦 ∈ ℚ ∣ (0 < 𝑦 ∧ (abs‘(𝑦 − 𝐴)) < ((denom‘𝑦)↑-2))} (abs‘(𝑥 − 𝐴)) < 𝐵) |
18 | irrapxlem5 40648 | . 2 ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐵 ∈ ℝ+) → ∃𝑎 ∈ ℚ (0 < 𝑎 ∧ (abs‘(𝑎 − 𝐴)) < 𝐵 ∧ (abs‘(𝑎 − 𝐴)) < ((denom‘𝑎)↑-2))) | |
19 | 17, 18 | r19.29a 3218 | 1 ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐵 ∈ ℝ+) → ∃𝑥 ∈ {𝑦 ∈ ℚ ∣ (0 < 𝑦 ∧ (abs‘(𝑦 − 𝐴)) < ((denom‘𝑦)↑-2))} (abs‘(𝑥 − 𝐴)) < 𝐵) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 396 ∧ w3a 1086 ∈ wcel 2106 ∃wrex 3065 {crab 3068 class class class wbr 5074 ‘cfv 6433 (class class class)co 7275 0cc0 10871 < clt 11009 − cmin 11205 -cneg 11206 2c2 12028 ℚcq 12688 ℝ+crp 12730 ↑cexp 13782 abscabs 14945 denomcdenom 16438 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-cnex 10927 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-mulcom 10935 ax-addass 10936 ax-mulass 10937 ax-distr 10938 ax-i2m1 10939 ax-1ne0 10940 ax-1rid 10941 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 ax-pre-mulgt0 10948 ax-pre-sup 10949 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-rmo 3071 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-int 4880 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-om 7713 df-1st 7831 df-2nd 7832 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-1o 8297 df-oadd 8301 df-er 8498 df-en 8734 df-dom 8735 df-sdom 8736 df-fin 8737 df-sup 9201 df-inf 9202 df-card 9697 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 df-sub 11207 df-neg 11208 df-div 11633 df-nn 11974 df-2 12036 df-3 12037 df-n0 12234 df-xnn0 12306 df-z 12320 df-uz 12583 df-q 12689 df-rp 12731 df-ico 13085 df-fz 13240 df-fl 13512 df-mod 13590 df-seq 13722 df-exp 13783 df-hash 14045 df-cj 14810 df-re 14811 df-im 14812 df-sqrt 14946 df-abs 14947 df-dvds 15964 df-gcd 16202 df-numer 16439 df-denom 16440 |
This theorem is referenced by: irrapx1 40650 |
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