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| Mirrors > Home > MPE Home > Th. List > uzind4ALT | Structured version Visualization version GIF version | ||
| Description: Induction on the upper set of integers that starts at an integer 𝑀. The last four hypotheses give us the substitution instances we need; the first two are the basis and the induction step. Either uzind4 12917 or uzind4ALT 12918 may be used; see comment for nnind 12238. (Contributed by NM, 7-Sep-2005.) (New usage is discouraged.) (Proof modification is discouraged.) |
| Ref | Expression |
|---|---|
| uzind4ALT.5 | ⊢ (𝑀 ∈ ℤ → 𝜓) |
| uzind4ALT.6 | ⊢ (𝑘 ∈ (ℤ≥‘𝑀) → (𝜒 → 𝜃)) |
| uzind4ALT.1 | ⊢ (𝑗 = 𝑀 → (𝜑 ↔ 𝜓)) |
| uzind4ALT.2 | ⊢ (𝑗 = 𝑘 → (𝜑 ↔ 𝜒)) |
| uzind4ALT.3 | ⊢ (𝑗 = (𝑘 + 1) → (𝜑 ↔ 𝜃)) |
| uzind4ALT.4 | ⊢ (𝑗 = 𝑁 → (𝜑 ↔ 𝜏)) |
| Ref | Expression |
|---|---|
| uzind4ALT | ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝜏) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | uzind4ALT.1 | . 2 ⊢ (𝑗 = 𝑀 → (𝜑 ↔ 𝜓)) | |
| 2 | uzind4ALT.2 | . 2 ⊢ (𝑗 = 𝑘 → (𝜑 ↔ 𝜒)) | |
| 3 | uzind4ALT.3 | . 2 ⊢ (𝑗 = (𝑘 + 1) → (𝜑 ↔ 𝜃)) | |
| 4 | uzind4ALT.4 | . 2 ⊢ (𝑗 = 𝑁 → (𝜑 ↔ 𝜏)) | |
| 5 | uzind4ALT.5 | . 2 ⊢ (𝑀 ∈ ℤ → 𝜓) | |
| 6 | uzind4ALT.6 | . 2 ⊢ (𝑘 ∈ (ℤ≥‘𝑀) → (𝜒 → 𝜃)) | |
| 7 | 1, 2, 3, 4, 5, 6 | uzind4 12917 | 1 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝜏) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 208 = wceq 1561 ∈ wcel 2143 ‘cfv 6521 (class class class)co 7396 1c1 11085 + caddc 11087 ℤcz 12578 ℤ≥cuz 12849 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1816 ax-4 1830 ax-5 1931 ax-6 1988 ax-7 2029 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5247 ax-nul 5257 ax-pow 5323 ax-pr 5391 ax-un 7718 ax-cnex 11140 ax-resscn 11141 ax-1cn 11142 ax-icn 11143 ax-addcl 11144 ax-addrcl 11145 ax-mulcl 11146 ax-mulrcl 11147 ax-mulcom 11148 ax-addass 11149 ax-mulass 11150 ax-distr 11151 ax-i2m1 11152 ax-1ne0 11153 ax-1rid 11154 ax-rnegex 11155 ax-rrecex 11156 ax-cnre 11157 ax-pre-lttri 11158 ax-pre-lttrn 11159 ax-pre-ltadd 11160 ax-pre-mulgt0 11161 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1100 df-3an 1101 df-tru 1564 df-fal 1574 df-ex 1801 df-nf 1805 df-sb 2092 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3063 df-ral 3078 df-rex 3088 df-reu 3369 df-rab 3416 df-v 3457 df-sbc 3746 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-pss 3925 df-nul 4287 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-iun 4952 df-br 5102 df-opab 5164 df-mpt 5183 df-tr 5209 df-id 5543 df-eprel 5548 df-po 5556 df-so 5557 df-fr 5601 df-we 5603 df-xp 5654 df-rel 5655 df-cnv 5656 df-co 5657 df-dm 5658 df-rn 5659 df-res 5660 df-ima 5661 df-pred 6288 df-ord 6349 df-on 6350 df-lim 6351 df-suc 6352 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-f1 6526 df-fo 6527 df-f1o 6528 df-fv 6529 df-riota 7353 df-ov 7399 df-oprab 7400 df-mpo 7401 df-om 7847 df-2nd 7971 df-frecs 8262 df-wrecs 8293 df-recs 8342 df-rdg 8381 df-er 8678 df-en 8928 df-dom 8929 df-sdom 8930 df-pnf 11229 df-mnf 11230 df-xr 11231 df-ltxr 11232 df-le 11233 df-sub 11427 df-neg 11428 df-nn 12221 df-n0 12492 df-z 12579 df-uz 12850 |
| This theorem is referenced by: (None) |
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