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Mirrors > Home > MPE Home > Th. List > fzen2 | Structured version Visualization version GIF version |
Description: The cardinality of a finite set of sequential integers with arbitrary endpoints. (Contributed by Mario Carneiro, 13-Feb-2014.) |
Ref | Expression |
---|---|
fzennn.1 | ⊢ 𝐺 = (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω) |
Ref | Expression |
---|---|
fzen2 | ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (𝑀...𝑁) ≈ (◡𝐺‘((𝑁 + 1) − 𝑀))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eluzel2 11568 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑀 ∈ ℤ) | |
2 | eluzelz 11573 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑁 ∈ ℤ) | |
3 | 1z 11284 | . . . . 5 ⊢ 1 ∈ ℤ | |
4 | zsubcl 11296 | . . . . 5 ⊢ ((1 ∈ ℤ ∧ 𝑀 ∈ ℤ) → (1 − 𝑀) ∈ ℤ) | |
5 | 3, 1, 4 | sylancr 694 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (1 − 𝑀) ∈ ℤ) |
6 | fzen 12229 | . . . 4 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ (1 − 𝑀) ∈ ℤ) → (𝑀...𝑁) ≈ ((𝑀 + (1 − 𝑀))...(𝑁 + (1 − 𝑀)))) | |
7 | 1, 2, 5, 6 | syl3anc 1318 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (𝑀...𝑁) ≈ ((𝑀 + (1 − 𝑀))...(𝑁 + (1 − 𝑀)))) |
8 | 1 | zcnd 11359 | . . . . 5 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑀 ∈ ℂ) |
9 | ax-1cn 9873 | . . . . 5 ⊢ 1 ∈ ℂ | |
10 | pncan3 10168 | . . . . 5 ⊢ ((𝑀 ∈ ℂ ∧ 1 ∈ ℂ) → (𝑀 + (1 − 𝑀)) = 1) | |
11 | 8, 9, 10 | sylancl 693 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (𝑀 + (1 − 𝑀)) = 1) |
12 | zcn 11259 | . . . . . . 7 ⊢ (𝑁 ∈ ℤ → 𝑁 ∈ ℂ) | |
13 | zcn 11259 | . . . . . . 7 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ ℂ) | |
14 | addsubass 10170 | . . . . . . . 8 ⊢ ((𝑁 ∈ ℂ ∧ 1 ∈ ℂ ∧ 𝑀 ∈ ℂ) → ((𝑁 + 1) − 𝑀) = (𝑁 + (1 − 𝑀))) | |
15 | 9, 14 | mp3an2 1404 | . . . . . . 7 ⊢ ((𝑁 ∈ ℂ ∧ 𝑀 ∈ ℂ) → ((𝑁 + 1) − 𝑀) = (𝑁 + (1 − 𝑀))) |
16 | 12, 13, 15 | syl2an 493 | . . . . . 6 ⊢ ((𝑁 ∈ ℤ ∧ 𝑀 ∈ ℤ) → ((𝑁 + 1) − 𝑀) = (𝑁 + (1 − 𝑀))) |
17 | 2, 1, 16 | syl2anc 691 | . . . . 5 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → ((𝑁 + 1) − 𝑀) = (𝑁 + (1 − 𝑀))) |
18 | 17 | eqcomd 2616 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (𝑁 + (1 − 𝑀)) = ((𝑁 + 1) − 𝑀)) |
19 | 11, 18 | oveq12d 6567 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → ((𝑀 + (1 − 𝑀))...(𝑁 + (1 − 𝑀))) = (1...((𝑁 + 1) − 𝑀))) |
20 | 7, 19 | breqtrd 4609 | . 2 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (𝑀...𝑁) ≈ (1...((𝑁 + 1) − 𝑀))) |
21 | peano2uz 11617 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (𝑁 + 1) ∈ (ℤ≥‘𝑀)) | |
22 | uznn0sub 11595 | . . 3 ⊢ ((𝑁 + 1) ∈ (ℤ≥‘𝑀) → ((𝑁 + 1) − 𝑀) ∈ ℕ0) | |
23 | fzennn.1 | . . . 4 ⊢ 𝐺 = (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω) | |
24 | 23 | fzennn 12629 | . . 3 ⊢ (((𝑁 + 1) − 𝑀) ∈ ℕ0 → (1...((𝑁 + 1) − 𝑀)) ≈ (◡𝐺‘((𝑁 + 1) − 𝑀))) |
25 | 21, 22, 24 | 3syl 18 | . 2 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (1...((𝑁 + 1) − 𝑀)) ≈ (◡𝐺‘((𝑁 + 1) − 𝑀))) |
26 | entr 7894 | . 2 ⊢ (((𝑀...𝑁) ≈ (1...((𝑁 + 1) − 𝑀)) ∧ (1...((𝑁 + 1) − 𝑀)) ≈ (◡𝐺‘((𝑁 + 1) − 𝑀))) → (𝑀...𝑁) ≈ (◡𝐺‘((𝑁 + 1) − 𝑀))) | |
27 | 20, 25, 26 | syl2anc 691 | 1 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (𝑀...𝑁) ≈ (◡𝐺‘((𝑁 + 1) − 𝑀))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1475 ∈ wcel 1977 Vcvv 3173 class class class wbr 4583 ↦ cmpt 4643 ◡ccnv 5037 ↾ cres 5040 ‘cfv 5804 (class class class)co 6549 ωcom 6957 reccrdg 7392 ≈ cen 7838 ℂcc 9813 0cc0 9815 1c1 9816 + caddc 9818 − cmin 10145 ℕ0cn0 11169 ℤcz 11254 ℤ≥cuz 11563 ...cfz 12197 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 ax-cnex 9871 ax-resscn 9872 ax-1cn 9873 ax-icn 9874 ax-addcl 9875 ax-addrcl 9876 ax-mulcl 9877 ax-mulrcl 9878 ax-mulcom 9879 ax-addass 9880 ax-mulass 9881 ax-distr 9882 ax-i2m1 9883 ax-1ne0 9884 ax-1rid 9885 ax-rnegex 9886 ax-rrecex 9887 ax-cnre 9888 ax-pre-lttri 9889 ax-pre-lttrn 9890 ax-pre-ltadd 9891 ax-pre-mulgt0 9892 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-nel 2783 df-ral 2901 df-rex 2902 df-reu 2903 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-pss 3556 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-tp 4130 df-op 4132 df-uni 4373 df-iun 4457 df-br 4584 df-opab 4644 df-mpt 4645 df-tr 4681 df-eprel 4949 df-id 4953 df-po 4959 df-so 4960 df-fr 4997 df-we 4999 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-pred 5597 df-ord 5643 df-on 5644 df-lim 5645 df-suc 5646 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-riota 6511 df-ov 6552 df-oprab 6553 df-mpt2 6554 df-om 6958 df-1st 7059 df-2nd 7060 df-wrecs 7294 df-recs 7355 df-rdg 7393 df-1o 7447 df-er 7629 df-en 7842 df-dom 7843 df-sdom 7844 df-pnf 9955 df-mnf 9956 df-xr 9957 df-ltxr 9958 df-le 9959 df-sub 10147 df-neg 10148 df-nn 10898 df-n0 11170 df-z 11255 df-uz 11564 df-fz 12198 |
This theorem is referenced by: fzfi 12633 |
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