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Mirrors > Home > MPE Home > Th. List > uzind4 | Structured version Visualization version GIF version |
Description: Induction on the upper set of integers that starts at an integer 𝑀. The first four hypotheses give us the substitution instances we need, and the last two are the basis and the induction step. (Contributed by NM, 7-Sep-2005.) |
Ref | Expression |
---|---|
uzind4.1 | ⊢ (𝑗 = 𝑀 → (𝜑 ↔ 𝜓)) |
uzind4.2 | ⊢ (𝑗 = 𝑘 → (𝜑 ↔ 𝜒)) |
uzind4.3 | ⊢ (𝑗 = (𝑘 + 1) → (𝜑 ↔ 𝜃)) |
uzind4.4 | ⊢ (𝑗 = 𝑁 → (𝜑 ↔ 𝜏)) |
uzind4.5 | ⊢ (𝑀 ∈ ℤ → 𝜓) |
uzind4.6 | ⊢ (𝑘 ∈ (ℤ≥‘𝑀) → (𝜒 → 𝜃)) |
Ref | Expression |
---|---|
uzind4 | ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝜏) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eluzel2 11730 | . 2 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑀 ∈ ℤ) | |
2 | eluzelz 11735 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑁 ∈ ℤ) | |
3 | eluzle 11738 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑀 ≤ 𝑁) | |
4 | breq2 4689 | . . . 4 ⊢ (𝑚 = 𝑁 → (𝑀 ≤ 𝑚 ↔ 𝑀 ≤ 𝑁)) | |
5 | 4 | elrab 3396 | . . 3 ⊢ (𝑁 ∈ {𝑚 ∈ ℤ ∣ 𝑀 ≤ 𝑚} ↔ (𝑁 ∈ ℤ ∧ 𝑀 ≤ 𝑁)) |
6 | 2, 3, 5 | sylanbrc 699 | . 2 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑁 ∈ {𝑚 ∈ ℤ ∣ 𝑀 ≤ 𝑚}) |
7 | uzind4.1 | . . 3 ⊢ (𝑗 = 𝑀 → (𝜑 ↔ 𝜓)) | |
8 | uzind4.2 | . . 3 ⊢ (𝑗 = 𝑘 → (𝜑 ↔ 𝜒)) | |
9 | uzind4.3 | . . 3 ⊢ (𝑗 = (𝑘 + 1) → (𝜑 ↔ 𝜃)) | |
10 | uzind4.4 | . . 3 ⊢ (𝑗 = 𝑁 → (𝜑 ↔ 𝜏)) | |
11 | uzind4.5 | . . 3 ⊢ (𝑀 ∈ ℤ → 𝜓) | |
12 | breq2 4689 | . . . . . 6 ⊢ (𝑚 = 𝑘 → (𝑀 ≤ 𝑚 ↔ 𝑀 ≤ 𝑘)) | |
13 | 12 | elrab 3396 | . . . . 5 ⊢ (𝑘 ∈ {𝑚 ∈ ℤ ∣ 𝑀 ≤ 𝑚} ↔ (𝑘 ∈ ℤ ∧ 𝑀 ≤ 𝑘)) |
14 | eluz2 11731 | . . . . . . 7 ⊢ (𝑘 ∈ (ℤ≥‘𝑀) ↔ (𝑀 ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ 𝑀 ≤ 𝑘)) | |
15 | 14 | biimpri 218 | . . . . . 6 ⊢ ((𝑀 ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ 𝑀 ≤ 𝑘) → 𝑘 ∈ (ℤ≥‘𝑀)) |
16 | 15 | 3expb 1285 | . . . . 5 ⊢ ((𝑀 ∈ ℤ ∧ (𝑘 ∈ ℤ ∧ 𝑀 ≤ 𝑘)) → 𝑘 ∈ (ℤ≥‘𝑀)) |
17 | 13, 16 | sylan2b 491 | . . . 4 ⊢ ((𝑀 ∈ ℤ ∧ 𝑘 ∈ {𝑚 ∈ ℤ ∣ 𝑀 ≤ 𝑚}) → 𝑘 ∈ (ℤ≥‘𝑀)) |
18 | uzind4.6 | . . . 4 ⊢ (𝑘 ∈ (ℤ≥‘𝑀) → (𝜒 → 𝜃)) | |
19 | 17, 18 | syl 17 | . . 3 ⊢ ((𝑀 ∈ ℤ ∧ 𝑘 ∈ {𝑚 ∈ ℤ ∣ 𝑀 ≤ 𝑚}) → (𝜒 → 𝜃)) |
20 | 7, 8, 9, 10, 11, 19 | uzind3 11509 | . 2 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ {𝑚 ∈ ℤ ∣ 𝑀 ≤ 𝑚}) → 𝜏) |
21 | 1, 6, 20 | syl2anc 694 | 1 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝜏) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 196 ∧ wa 383 ∧ w3a 1054 = wceq 1523 ∈ wcel 2030 {crab 2945 class class class wbr 4685 ‘cfv 5926 (class class class)co 6690 1c1 9975 + caddc 9977 ≤ cle 10113 ℤcz 11415 ℤ≥cuz 11725 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1762 ax-4 1777 ax-5 1879 ax-6 1945 ax-7 1981 ax-8 2032 ax-9 2039 ax-10 2059 ax-11 2074 ax-12 2087 ax-13 2282 ax-ext 2631 ax-sep 4814 ax-nul 4822 ax-pow 4873 ax-pr 4936 ax-un 6991 ax-cnex 10030 ax-resscn 10031 ax-1cn 10032 ax-icn 10033 ax-addcl 10034 ax-addrcl 10035 ax-mulcl 10036 ax-mulrcl 10037 ax-mulcom 10038 ax-addass 10039 ax-mulass 10040 ax-distr 10041 ax-i2m1 10042 ax-1ne0 10043 ax-1rid 10044 ax-rnegex 10045 ax-rrecex 10046 ax-cnre 10047 ax-pre-lttri 10048 ax-pre-lttrn 10049 ax-pre-ltadd 10050 ax-pre-mulgt0 10051 |
This theorem depends on definitions: df-bi 197 df-or 384 df-an 385 df-3or 1055 df-3an 1056 df-tru 1526 df-ex 1745 df-nf 1750 df-sb 1938 df-eu 2502 df-mo 2503 df-clab 2638 df-cleq 2644 df-clel 2647 df-nfc 2782 df-ne 2824 df-nel 2927 df-ral 2946 df-rex 2947 df-reu 2948 df-rab 2950 df-v 3233 df-sbc 3469 df-csb 3567 df-dif 3610 df-un 3612 df-in 3614 df-ss 3621 df-pss 3623 df-nul 3949 df-if 4120 df-pw 4193 df-sn 4211 df-pr 4213 df-tp 4215 df-op 4217 df-uni 4469 df-iun 4554 df-br 4686 df-opab 4746 df-mpt 4763 df-tr 4786 df-id 5053 df-eprel 5058 df-po 5064 df-so 5065 df-fr 5102 df-we 5104 df-xp 5149 df-rel 5150 df-cnv 5151 df-co 5152 df-dm 5153 df-rn 5154 df-res 5155 df-ima 5156 df-pred 5718 df-ord 5764 df-on 5765 df-lim 5766 df-suc 5767 df-iota 5889 df-fun 5928 df-fn 5929 df-f 5930 df-f1 5931 df-fo 5932 df-f1o 5933 df-fv 5934 df-riota 6651 df-ov 6693 df-oprab 6694 df-mpt2 6695 df-om 7108 df-wrecs 7452 df-recs 7513 df-rdg 7551 df-er 7787 df-en 7998 df-dom 7999 df-sdom 8000 df-pnf 10114 df-mnf 10115 df-xr 10116 df-ltxr 10117 df-le 10118 df-sub 10306 df-neg 10307 df-nn 11059 df-n0 11331 df-z 11416 df-uz 11726 |
This theorem is referenced by: uzind4ALT 11785 uzind4s 11786 uzind4s2 11787 uzind4i 11788 uzwo 11789 seqcl2 12859 seqfveq2 12863 seqshft2 12867 monoord 12871 seqsplit 12874 seqf1o 12882 seqid2 12887 seqhomo 12888 leexp2r 12958 cvgrat 14659 clim2prod 14664 ntrivcvgfvn0 14675 fprodabs 14748 fprodefsum 14869 ruclem9 15011 dvdsfac 15095 smuval2 15251 smupvallem 15252 seq1st 15331 prmreclem4 15670 vdwlem13 15744 2expltfac 15846 telgsumfzs 18432 1stcelcls 21312 caubl 23152 caublcls 23153 volsuplem 23369 cpnord 23743 aaliou3lem2 24143 bcmono 25047 sseqp1 30585 iprodefisumlem 31752 sdclem2 33668 seqpo 33673 mettrifi 33683 incssnn0 37591 dvgrat 38828 monoordxrv 40025 climsuselem1 40157 smonoord 41666 |
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