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| Mirrors > Home > MPE Home > Th. List > uzsinds | Structured version Visualization version GIF version | ||
| Description: Strong (or "total") induction principle over an upper set of integers. (Contributed by Scott Fenton, 16-May-2014.) |
| Ref | Expression |
|---|---|
| uzsinds.1 | ⊢ (𝑥 = 𝑦 → (𝜑 ↔ 𝜓)) |
| uzsinds.2 | ⊢ (𝑥 = 𝑁 → (𝜑 ↔ 𝜒)) |
| uzsinds.3 | ⊢ (𝑥 ∈ (ℤ≥‘𝑀) → (∀𝑦 ∈ (𝑀...(𝑥 − 1))𝜓 → 𝜑)) |
| Ref | Expression |
|---|---|
| uzsinds | ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝜒) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ltweuz 13997 | . 2 ⊢ < We (ℤ≥‘𝑀) | |
| 2 | fvex 6895 | . . 3 ⊢ (ℤ≥‘𝑀) ∈ V | |
| 3 | exse 5622 | . . 3 ⊢ ((ℤ≥‘𝑀) ∈ V → < Se (ℤ≥‘𝑀)) | |
| 4 | 2, 3 | ax-mp 5 | . 2 ⊢ < Se (ℤ≥‘𝑀) |
| 5 | uzsinds.1 | . 2 ⊢ (𝑥 = 𝑦 → (𝜑 ↔ 𝜓)) | |
| 6 | uzsinds.2 | . 2 ⊢ (𝑥 = 𝑁 → (𝜑 ↔ 𝜒)) | |
| 7 | preduz 13678 | . . . 4 ⊢ (𝑥 ∈ (ℤ≥‘𝑀) → Pred( < , (ℤ≥‘𝑀), 𝑥) = (𝑀...(𝑥 − 1))) | |
| 8 | 7 | raleqdv 3329 | . . 3 ⊢ (𝑥 ∈ (ℤ≥‘𝑀) → (∀𝑦 ∈ Pred ( < , (ℤ≥‘𝑀), 𝑥)𝜓 ↔ ∀𝑦 ∈ (𝑀...(𝑥 − 1))𝜓)) |
| 9 | uzsinds.3 | . . 3 ⊢ (𝑥 ∈ (ℤ≥‘𝑀) → (∀𝑦 ∈ (𝑀...(𝑥 − 1))𝜓 → 𝜑)) | |
| 10 | 8, 9 | sylbid 243 | . 2 ⊢ (𝑥 ∈ (ℤ≥‘𝑀) → (∀𝑦 ∈ Pred ( < , (ℤ≥‘𝑀), 𝑥)𝜓 → 𝜑)) |
| 11 | 1, 4, 5, 6, 10 | wfis3 6359 | 1 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝜒) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 209 = wceq 1567 ∈ wcel 2149 ∀wral 3085 Vcvv 3461 Se wse 5613 Predcpred 6302 ‘cfv 6537 (class class class)co 7411 1c1 11101 < clt 11243 − cmin 11441 ℤ≥cuz 12862 ...cfz 13535 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5259 ax-nul 5271 ax-pow 5337 ax-pr 5405 ax-un 7733 ax-inf2 9610 ax-cnex 11156 ax-resscn 11157 ax-1cn 11158 ax-icn 11159 ax-addcl 11160 ax-addrcl 11161 ax-mulcl 11162 ax-mulrcl 11163 ax-mulcom 11164 ax-addass 11165 ax-mulass 11166 ax-distr 11167 ax-i2m1 11168 ax-1ne0 11169 ax-1rid 11170 ax-rnegex 11171 ax-rrecex 11172 ax-cnre 11173 ax-pre-lttri 11174 ax-pre-lttrn 11175 ax-pre-ltadd 11176 ax-pre-mulgt0 11177 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-nel 3071 df-ral 3086 df-rex 3096 df-reu 3376 df-rab 3423 df-v 3463 df-sbc 3752 df-csb 3860 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-pss 3931 df-nul 4293 df-if 4491 df-pw 4567 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4875 df-iun 4960 df-br 5112 df-opab 5176 df-mpt 5195 df-tr 5221 df-id 5557 df-eprel 5562 df-po 5570 df-so 5571 df-fr 5615 df-se 5616 df-we 5617 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-res 5674 df-ima 5675 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-isom 6546 df-riota 7368 df-ov 7414 df-oprab 7415 df-mpo 7416 df-om 7863 df-1st 7986 df-2nd 7987 df-frecs 8278 df-wrecs 8309 df-recs 8358 df-rdg 8397 df-er 8694 df-en 8944 df-dom 8945 df-sdom 8946 df-pnf 11245 df-mnf 11246 df-xr 11247 df-ltxr 11248 df-le 11249 df-sub 11443 df-neg 11444 df-nn 12234 df-n0 12505 df-z 12592 df-uz 12863 df-fz 13536 |
| This theorem is referenced by: nnsinds 14024 nn0sinds 14025 |
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