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Mirrors > Home > MPE Home > Th. List > Mathboxes > uzindd | Structured version Visualization version GIF version |
Description: Induction on the upper integers that start at 𝑀. The first four hypotheses give us the substitution instances we need; the following two are the basis and the induction step, a deduction version. (Contributed by metakunt, 8-Jun-2024.) |
Ref | Expression |
---|---|
uzindd.1 | ⊢ (𝑗 = 𝑀 → (𝜓 ↔ 𝜒)) |
uzindd.2 | ⊢ (𝑗 = 𝑘 → (𝜓 ↔ 𝜃)) |
uzindd.3 | ⊢ (𝑗 = (𝑘 + 1) → (𝜓 ↔ 𝜏)) |
uzindd.4 | ⊢ (𝑗 = 𝑁 → (𝜓 ↔ 𝜂)) |
uzindd.5 | ⊢ (𝜑 → 𝜒) |
uzindd.6 | ⊢ ((𝜑 ∧ 𝜃 ∧ (𝑘 ∈ ℤ ∧ 𝑀 ≤ 𝑘)) → 𝜏) |
uzindd.7 | ⊢ (𝜑 → 𝑀 ∈ ℤ) |
uzindd.8 | ⊢ (𝜑 → 𝑁 ∈ ℤ) |
uzindd.9 | ⊢ (𝜑 → 𝑀 ≤ 𝑁) |
Ref | Expression |
---|---|
uzindd | ⊢ (𝜑 → 𝜂) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | uzindd.7 | . . 3 ⊢ (𝜑 → 𝑀 ∈ ℤ) | |
2 | uzindd.8 | . . 3 ⊢ (𝜑 → 𝑁 ∈ ℤ) | |
3 | uzindd.9 | . . 3 ⊢ (𝜑 → 𝑀 ≤ 𝑁) | |
4 | 1, 2, 3 | 3jca 1126 | . 2 ⊢ (𝜑 → (𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝑀 ≤ 𝑁)) |
5 | uzindd.1 | . . . 4 ⊢ (𝑗 = 𝑀 → (𝜓 ↔ 𝜒)) | |
6 | 5 | imbi2d 340 | . . 3 ⊢ (𝑗 = 𝑀 → ((𝜑 → 𝜓) ↔ (𝜑 → 𝜒))) |
7 | uzindd.2 | . . . 4 ⊢ (𝑗 = 𝑘 → (𝜓 ↔ 𝜃)) | |
8 | 7 | imbi2d 340 | . . 3 ⊢ (𝑗 = 𝑘 → ((𝜑 → 𝜓) ↔ (𝜑 → 𝜃))) |
9 | uzindd.3 | . . . 4 ⊢ (𝑗 = (𝑘 + 1) → (𝜓 ↔ 𝜏)) | |
10 | 9 | imbi2d 340 | . . 3 ⊢ (𝑗 = (𝑘 + 1) → ((𝜑 → 𝜓) ↔ (𝜑 → 𝜏))) |
11 | uzindd.4 | . . . 4 ⊢ (𝑗 = 𝑁 → (𝜓 ↔ 𝜂)) | |
12 | 11 | imbi2d 340 | . . 3 ⊢ (𝑗 = 𝑁 → ((𝜑 → 𝜓) ↔ (𝜑 → 𝜂))) |
13 | uzindd.5 | . . . . 5 ⊢ (𝜑 → 𝜒) | |
14 | 13 | adantr 480 | . . . 4 ⊢ ((𝜑 ∧ 𝑀 ∈ ℤ) → 𝜒) |
15 | 14 | expcom 413 | . . 3 ⊢ (𝑀 ∈ ℤ → (𝜑 → 𝜒)) |
16 | 3anass 1093 | . . . . . . . . . 10 ⊢ ((𝑀 ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ 𝑀 ≤ 𝑘) ↔ (𝑀 ∈ ℤ ∧ (𝑘 ∈ ℤ ∧ 𝑀 ≤ 𝑘))) | |
17 | ancom 460 | . . . . . . . . . 10 ⊢ ((𝑀 ∈ ℤ ∧ (𝑘 ∈ ℤ ∧ 𝑀 ≤ 𝑘)) ↔ ((𝑘 ∈ ℤ ∧ 𝑀 ≤ 𝑘) ∧ 𝑀 ∈ ℤ)) | |
18 | 16, 17 | bitri 274 | . . . . . . . . 9 ⊢ ((𝑀 ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ 𝑀 ≤ 𝑘) ↔ ((𝑘 ∈ ℤ ∧ 𝑀 ≤ 𝑘) ∧ 𝑀 ∈ ℤ)) |
19 | uzindd.6 | . . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝜃 ∧ (𝑘 ∈ ℤ ∧ 𝑀 ≤ 𝑘)) → 𝜏) | |
20 | 19 | ad4ant123 1170 | . . . . . . . . . 10 ⊢ ((((𝜑 ∧ 𝜃) ∧ (𝑘 ∈ ℤ ∧ 𝑀 ≤ 𝑘)) ∧ 𝑀 ∈ ℤ) → 𝜏) |
21 | 20 | anasss 466 | . . . . . . . . 9 ⊢ (((𝜑 ∧ 𝜃) ∧ ((𝑘 ∈ ℤ ∧ 𝑀 ≤ 𝑘) ∧ 𝑀 ∈ ℤ)) → 𝜏) |
22 | 18, 21 | sylan2b 593 | . . . . . . . 8 ⊢ (((𝜑 ∧ 𝜃) ∧ (𝑀 ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ 𝑀 ≤ 𝑘)) → 𝜏) |
23 | 22 | 3impa 1108 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝜃 ∧ (𝑀 ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ 𝑀 ≤ 𝑘)) → 𝜏) |
24 | 23 | 3com23 1124 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑀 ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ 𝑀 ≤ 𝑘) ∧ 𝜃) → 𝜏) |
25 | 24 | 3expia 1119 | . . . . 5 ⊢ ((𝜑 ∧ (𝑀 ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ 𝑀 ≤ 𝑘)) → (𝜃 → 𝜏)) |
26 | 25 | expcom 413 | . . . 4 ⊢ ((𝑀 ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ 𝑀 ≤ 𝑘) → (𝜑 → (𝜃 → 𝜏))) |
27 | 26 | a2d 29 | . . 3 ⊢ ((𝑀 ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ 𝑀 ≤ 𝑘) → ((𝜑 → 𝜃) → (𝜑 → 𝜏))) |
28 | 6, 8, 10, 12, 15, 27 | uzind 12395 | . 2 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝑀 ≤ 𝑁) → (𝜑 → 𝜂)) |
29 | 4, 28 | mpcom 38 | 1 ⊢ (𝜑 → 𝜂) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 ∧ w3a 1085 = wceq 1541 ∈ wcel 2109 class class class wbr 5078 (class class class)co 7268 1c1 10856 + caddc 10858 ≤ cle 10994 ℤcz 12302 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1801 ax-4 1815 ax-5 1916 ax-6 1974 ax-7 2014 ax-8 2111 ax-9 2119 ax-10 2140 ax-11 2157 ax-12 2174 ax-ext 2710 ax-sep 5226 ax-nul 5233 ax-pow 5291 ax-pr 5355 ax-un 7579 ax-resscn 10912 ax-1cn 10913 ax-icn 10914 ax-addcl 10915 ax-addrcl 10916 ax-mulcl 10917 ax-mulrcl 10918 ax-mulcom 10919 ax-addass 10920 ax-mulass 10921 ax-distr 10922 ax-i2m1 10923 ax-1ne0 10924 ax-1rid 10925 ax-rnegex 10926 ax-rrecex 10927 ax-cnre 10928 ax-pre-lttri 10929 ax-pre-lttrn 10930 ax-pre-ltadd 10931 ax-pre-mulgt0 10932 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1544 df-fal 1554 df-ex 1786 df-nf 1790 df-sb 2071 df-mo 2541 df-eu 2570 df-clab 2717 df-cleq 2731 df-clel 2817 df-nfc 2890 df-ne 2945 df-nel 3051 df-ral 3070 df-rex 3071 df-reu 3072 df-rab 3074 df-v 3432 df-sbc 3720 df-csb 3837 df-dif 3894 df-un 3896 df-in 3898 df-ss 3908 df-pss 3910 df-nul 4262 df-if 4465 df-pw 4540 df-sn 4567 df-pr 4569 df-tp 4571 df-op 4573 df-uni 4845 df-iun 4931 df-br 5079 df-opab 5141 df-mpt 5162 df-tr 5196 df-id 5488 df-eprel 5494 df-po 5502 df-so 5503 df-fr 5543 df-we 5545 df-xp 5594 df-rel 5595 df-cnv 5596 df-co 5597 df-dm 5598 df-rn 5599 df-res 5600 df-ima 5601 df-pred 6199 df-ord 6266 df-on 6267 df-lim 6268 df-suc 6269 df-iota 6388 df-fun 6432 df-fn 6433 df-f 6434 df-f1 6435 df-fo 6436 df-f1o 6437 df-fv 6438 df-riota 7225 df-ov 7271 df-oprab 7272 df-mpo 7273 df-om 7701 df-2nd 7818 df-frecs 8081 df-wrecs 8112 df-recs 8186 df-rdg 8225 df-er 8472 df-en 8708 df-dom 8709 df-sdom 8710 df-pnf 10995 df-mnf 10996 df-xr 10997 df-ltxr 10998 df-le 10999 df-sub 11190 df-neg 11191 df-nn 11957 df-n0 12217 df-z 12303 |
This theorem is referenced by: 2ap1caineq 40081 |
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