Mathbox for Thierry Arnoux |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > dya2iocress | Structured version Visualization version GIF version |
Description: Dyadic intervals are subsets of ℝ. (Contributed by Thierry Arnoux, 18-Sep-2017.) |
Ref | Expression |
---|---|
sxbrsiga.0 | ⊢ 𝐽 = (topGen‘ran (,)) |
dya2ioc.1 | ⊢ 𝐼 = (𝑥 ∈ ℤ, 𝑛 ∈ ℤ ↦ ((𝑥 / (2↑𝑛))[,)((𝑥 + 1) / (2↑𝑛)))) |
Ref | Expression |
---|---|
dya2iocress | ⊢ ((𝑁 ∈ ℤ ∧ 𝑋 ∈ ℤ) → (𝑋𝐼𝑁) ⊆ ℝ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sxbrsiga.0 | . . 3 ⊢ 𝐽 = (topGen‘ran (,)) | |
2 | dya2ioc.1 | . . 3 ⊢ 𝐼 = (𝑥 ∈ ℤ, 𝑛 ∈ ℤ ↦ ((𝑥 / (2↑𝑛))[,)((𝑥 + 1) / (2↑𝑛)))) | |
3 | 1, 2 | dya2iocival 32236 | . 2 ⊢ ((𝑁 ∈ ℤ ∧ 𝑋 ∈ ℤ) → (𝑋𝐼𝑁) = ((𝑋 / (2↑𝑁))[,)((𝑋 + 1) / (2↑𝑁)))) |
4 | simpr 485 | . . . . 5 ⊢ ((𝑁 ∈ ℤ ∧ 𝑋 ∈ ℤ) → 𝑋 ∈ ℤ) | |
5 | 4 | zred 12425 | . . . 4 ⊢ ((𝑁 ∈ ℤ ∧ 𝑋 ∈ ℤ) → 𝑋 ∈ ℝ) |
6 | 2rp 12734 | . . . . . 6 ⊢ 2 ∈ ℝ+ | |
7 | 6 | a1i 11 | . . . . 5 ⊢ ((𝑁 ∈ ℤ ∧ 𝑋 ∈ ℤ) → 2 ∈ ℝ+) |
8 | simpl 483 | . . . . 5 ⊢ ((𝑁 ∈ ℤ ∧ 𝑋 ∈ ℤ) → 𝑁 ∈ ℤ) | |
9 | 7, 8 | rpexpcld 13960 | . . . 4 ⊢ ((𝑁 ∈ ℤ ∧ 𝑋 ∈ ℤ) → (2↑𝑁) ∈ ℝ+) |
10 | 5, 9 | rerpdivcld 12802 | . . 3 ⊢ ((𝑁 ∈ ℤ ∧ 𝑋 ∈ ℤ) → (𝑋 / (2↑𝑁)) ∈ ℝ) |
11 | 1red 10977 | . . . . . 6 ⊢ ((𝑁 ∈ ℤ ∧ 𝑋 ∈ ℤ) → 1 ∈ ℝ) | |
12 | 5, 11 | readdcld 11005 | . . . . 5 ⊢ ((𝑁 ∈ ℤ ∧ 𝑋 ∈ ℤ) → (𝑋 + 1) ∈ ℝ) |
13 | 12, 9 | rerpdivcld 12802 | . . . 4 ⊢ ((𝑁 ∈ ℤ ∧ 𝑋 ∈ ℤ) → ((𝑋 + 1) / (2↑𝑁)) ∈ ℝ) |
14 | 13 | rexrd 11026 | . . 3 ⊢ ((𝑁 ∈ ℤ ∧ 𝑋 ∈ ℤ) → ((𝑋 + 1) / (2↑𝑁)) ∈ ℝ*) |
15 | icossre 13159 | . . 3 ⊢ (((𝑋 / (2↑𝑁)) ∈ ℝ ∧ ((𝑋 + 1) / (2↑𝑁)) ∈ ℝ*) → ((𝑋 / (2↑𝑁))[,)((𝑋 + 1) / (2↑𝑁))) ⊆ ℝ) | |
16 | 10, 14, 15 | syl2anc 584 | . 2 ⊢ ((𝑁 ∈ ℤ ∧ 𝑋 ∈ ℤ) → ((𝑋 / (2↑𝑁))[,)((𝑋 + 1) / (2↑𝑁))) ⊆ ℝ) |
17 | 3, 16 | eqsstrd 3964 | 1 ⊢ ((𝑁 ∈ ℤ ∧ 𝑋 ∈ ℤ) → (𝑋𝐼𝑁) ⊆ ℝ) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 396 = wceq 1542 ∈ wcel 2110 ⊆ wss 3892 ran crn 5591 ‘cfv 6432 (class class class)co 7271 ∈ cmpo 7273 ℝcr 10871 1c1 10873 + caddc 10875 ℝ*cxr 11009 / cdiv 11632 2c2 12028 ℤcz 12319 ℝ+crp 12729 (,)cioo 13078 [,)cico 13080 ↑cexp 13780 topGenctg 17146 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1975 ax-7 2015 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2711 ax-sep 5227 ax-nul 5234 ax-pow 5292 ax-pr 5356 ax-un 7582 ax-cnex 10928 ax-resscn 10929 ax-1cn 10930 ax-icn 10931 ax-addcl 10932 ax-addrcl 10933 ax-mulcl 10934 ax-mulrcl 10935 ax-mulcom 10936 ax-addass 10937 ax-mulass 10938 ax-distr 10939 ax-i2m1 10940 ax-1ne0 10941 ax-1rid 10942 ax-rnegex 10943 ax-rrecex 10944 ax-cnre 10945 ax-pre-lttri 10946 ax-pre-lttrn 10947 ax-pre-ltadd 10948 ax-pre-mulgt0 10949 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2072 df-mo 2542 df-eu 2571 df-clab 2718 df-cleq 2732 df-clel 2818 df-nfc 2891 df-ne 2946 df-nel 3052 df-ral 3071 df-rex 3072 df-reu 3073 df-rmo 3074 df-rab 3075 df-v 3433 df-sbc 3721 df-csb 3838 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-pss 3911 df-nul 4263 df-if 4466 df-pw 4541 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4846 df-iun 4932 df-br 5080 df-opab 5142 df-mpt 5163 df-tr 5197 df-id 5490 df-eprel 5496 df-po 5504 df-so 5505 df-fr 5545 df-we 5547 df-xp 5596 df-rel 5597 df-cnv 5598 df-co 5599 df-dm 5600 df-rn 5601 df-res 5602 df-ima 5603 df-pred 6201 df-ord 6268 df-on 6269 df-lim 6270 df-suc 6271 df-iota 6390 df-fun 6434 df-fn 6435 df-f 6436 df-f1 6437 df-fo 6438 df-f1o 6439 df-fv 6440 df-riota 7228 df-ov 7274 df-oprab 7275 df-mpo 7276 df-om 7707 df-2nd 7825 df-frecs 8088 df-wrecs 8119 df-recs 8193 df-rdg 8232 df-er 8481 df-en 8717 df-dom 8718 df-sdom 8719 df-pnf 11012 df-mnf 11013 df-xr 11014 df-ltxr 11015 df-le 11016 df-sub 11207 df-neg 11208 df-div 11633 df-nn 11974 df-2 12036 df-n0 12234 df-z 12320 df-uz 12582 df-rp 12730 df-ico 13084 df-seq 13720 df-exp 13781 |
This theorem is referenced by: (None) |
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