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| Mirrors > Home > MPE Home > Th. List > risefacval | Structured version Visualization version GIF version | ||
| Description: The value of the rising factorial function. (Contributed by Scott Fenton, 5-Jan-2018.) |
| Ref | Expression |
|---|---|
| risefacval | ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ0) → (𝐴 RiseFac 𝑁) = ∏𝑘 ∈ (0...(𝑁 − 1))(𝐴 + 𝑘)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | oveq1 7429 | . . 3 ⊢ (𝑥 = 𝐴 → (𝑥 + 𝑘) = (𝐴 + 𝑘)) | |
| 2 | 1 | prodeq2sdv 16098 | . 2 ⊢ (𝑥 = 𝐴 → ∏𝑘 ∈ (0...(𝑛 − 1))(𝑥 + 𝑘) = ∏𝑘 ∈ (0...(𝑛 − 1))(𝐴 + 𝑘)) |
| 3 | oveq1 7429 | . . . 4 ⊢ (𝑛 = 𝑁 → (𝑛 − 1) = (𝑁 − 1)) | |
| 4 | 3 | oveq2d 7438 | . . 3 ⊢ (𝑛 = 𝑁 → (0...(𝑛 − 1)) = (0...(𝑁 − 1))) |
| 5 | 4 | prodeq1d 16095 | . 2 ⊢ (𝑛 = 𝑁 → ∏𝑘 ∈ (0...(𝑛 − 1))(𝐴 + 𝑘) = ∏𝑘 ∈ (0...(𝑁 − 1))(𝐴 + 𝑘)) |
| 6 | df-risefac 16180 | . 2 ⊢ RiseFac = (𝑥 ∈ ℂ, 𝑛 ∈ ℕ0 ↦ ∏𝑘 ∈ (0...(𝑛 − 1))(𝑥 + 𝑘)) | |
| 7 | prodex 16081 | . 2 ⊢ ∏𝑘 ∈ (0...(𝑁 − 1))(𝐴 + 𝑘) ∈ V | |
| 8 | 2, 5, 6, 7 | ovmpo 7582 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ0) → (𝐴 RiseFac 𝑁) = ∏𝑘 ∈ (0...(𝑁 − 1))(𝐴 + 𝑘)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1569 ∈ wcel 2144 (class class class)co 7422 ℂcc 11203 0cc0 11205 1c1 11206 + caddc 11208 − cmin 11546 ℕ0cn0 12611 ...cfz 13644 ∏cprod 16079 RiseFac crisefac 16179 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pr 5390 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3848 df-ss 3897 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5545 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6306 df-iota 6496 df-fun 6543 df-f 6545 df-f1 6546 df-fo 6547 df-f1o 6548 df-fv 6549 df-ov 7425 df-oprab 7426 df-mpo 7427 df-frecs 8304 df-wrecs 8335 df-recs 8384 df-rdg 8423 df-seq 14150 df-prod 16080 df-risefac 16180 |
| This theorem is used by: risefacval2 16184 risefaccllem 16187 risefac0 16200 risefacp1 16202 |
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