MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  birthdaylem2 Structured version   Visualization version   GIF version

Theorem birthdaylem2 24878
Description: For general 𝑁 and 𝐾, count the fraction of injective functions from 1...𝐾 to 1...𝑁. (Contributed by Mario Carneiro, 7-May-2015.)
Hypotheses
Ref Expression
birthday.s 𝑆 = {𝑓𝑓:(1...𝐾)⟶(1...𝑁)}
birthday.t 𝑇 = {𝑓𝑓:(1...𝐾)–1-1→(1...𝑁)}
Assertion
Ref Expression
birthdaylem2 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → ((♯‘𝑇) / (♯‘𝑆)) = (exp‘Σ𝑘 ∈ (0...(𝐾 − 1))(log‘(1 − (𝑘 / 𝑁)))))
Distinct variable groups:   𝑓,𝑘,𝐾   𝑓,𝑁,𝑘
Allowed substitution hints:   𝑆(𝑓,𝑘)   𝑇(𝑓,𝑘)

Proof of Theorem birthdaylem2
Dummy variable 𝑛 is distinct from all other variables.
StepHypRef Expression
1 birthday.t . . . . . . 7 𝑇 = {𝑓𝑓:(1...𝐾)–1-1→(1...𝑁)}
21fveq2i 6355 . . . . . 6 (♯‘𝑇) = (♯‘{𝑓𝑓:(1...𝐾)–1-1→(1...𝑁)})
3 fzfi 12965 . . . . . . 7 (1...𝐾) ∈ Fin
4 fzfi 12965 . . . . . . 7 (1...𝑁) ∈ Fin
5 hashf1 13433 . . . . . . 7 (((1...𝐾) ∈ Fin ∧ (1...𝑁) ∈ Fin) → (♯‘{𝑓𝑓:(1...𝐾)–1-1→(1...𝑁)}) = ((!‘(♯‘(1...𝐾))) · ((♯‘(1...𝑁))C(♯‘(1...𝐾)))))
63, 4, 5mp2an 710 . . . . . 6 (♯‘{𝑓𝑓:(1...𝐾)–1-1→(1...𝑁)}) = ((!‘(♯‘(1...𝐾))) · ((♯‘(1...𝑁))C(♯‘(1...𝐾))))
72, 6eqtri 2782 . . . . 5 (♯‘𝑇) = ((!‘(♯‘(1...𝐾))) · ((♯‘(1...𝑁))C(♯‘(1...𝐾))))
8 elfznn0 12626 . . . . . . . . 9 (𝐾 ∈ (0...𝑁) → 𝐾 ∈ ℕ0)
98adantl 473 . . . . . . . 8 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → 𝐾 ∈ ℕ0)
10 hashfz1 13328 . . . . . . . 8 (𝐾 ∈ ℕ0 → (♯‘(1...𝐾)) = 𝐾)
119, 10syl 17 . . . . . . 7 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (♯‘(1...𝐾)) = 𝐾)
1211fveq2d 6356 . . . . . 6 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (!‘(♯‘(1...𝐾))) = (!‘𝐾))
13 nnnn0 11491 . . . . . . . . 9 (𝑁 ∈ ℕ → 𝑁 ∈ ℕ0)
14 hashfz1 13328 . . . . . . . . 9 (𝑁 ∈ ℕ0 → (♯‘(1...𝑁)) = 𝑁)
1513, 14syl 17 . . . . . . . 8 (𝑁 ∈ ℕ → (♯‘(1...𝑁)) = 𝑁)
1615adantr 472 . . . . . . 7 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (♯‘(1...𝑁)) = 𝑁)
1716, 11oveq12d 6831 . . . . . 6 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → ((♯‘(1...𝑁))C(♯‘(1...𝐾))) = (𝑁C𝐾))
1812, 17oveq12d 6831 . . . . 5 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → ((!‘(♯‘(1...𝐾))) · ((♯‘(1...𝑁))C(♯‘(1...𝐾)))) = ((!‘𝐾) · (𝑁C𝐾)))
197, 18syl5eq 2806 . . . 4 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (♯‘𝑇) = ((!‘𝐾) · (𝑁C𝐾)))
2013adantr 472 . . . . . . . . 9 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → 𝑁 ∈ ℕ0)
21 faccl 13264 . . . . . . . . 9 (𝑁 ∈ ℕ0 → (!‘𝑁) ∈ ℕ)
2220, 21syl 17 . . . . . . . 8 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (!‘𝑁) ∈ ℕ)
2322nncnd 11228 . . . . . . 7 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (!‘𝑁) ∈ ℂ)
24 fznn0sub 12566 . . . . . . . . . 10 (𝐾 ∈ (0...𝑁) → (𝑁𝐾) ∈ ℕ0)
2524adantl 473 . . . . . . . . 9 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (𝑁𝐾) ∈ ℕ0)
26 faccl 13264 . . . . . . . . 9 ((𝑁𝐾) ∈ ℕ0 → (!‘(𝑁𝐾)) ∈ ℕ)
2725, 26syl 17 . . . . . . . 8 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (!‘(𝑁𝐾)) ∈ ℕ)
2827nncnd 11228 . . . . . . 7 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (!‘(𝑁𝐾)) ∈ ℂ)
2927nnne0d 11257 . . . . . . 7 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (!‘(𝑁𝐾)) ≠ 0)
3023, 28, 29divcld 10993 . . . . . 6 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → ((!‘𝑁) / (!‘(𝑁𝐾))) ∈ ℂ)
31 faccl 13264 . . . . . . . 8 (𝐾 ∈ ℕ0 → (!‘𝐾) ∈ ℕ)
329, 31syl 17 . . . . . . 7 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (!‘𝐾) ∈ ℕ)
3332nncnd 11228 . . . . . 6 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (!‘𝐾) ∈ ℂ)
3432nnne0d 11257 . . . . . 6 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (!‘𝐾) ≠ 0)
3530, 33, 34divcan2d 10995 . . . . 5 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → ((!‘𝐾) · (((!‘𝑁) / (!‘(𝑁𝐾))) / (!‘𝐾))) = ((!‘𝑁) / (!‘(𝑁𝐾))))
36 bcval2 13286 . . . . . . . 8 (𝐾 ∈ (0...𝑁) → (𝑁C𝐾) = ((!‘𝑁) / ((!‘(𝑁𝐾)) · (!‘𝐾))))
3736adantl 473 . . . . . . 7 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (𝑁C𝐾) = ((!‘𝑁) / ((!‘(𝑁𝐾)) · (!‘𝐾))))
3823, 28, 33, 29, 34divdiv1d 11024 . . . . . . 7 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (((!‘𝑁) / (!‘(𝑁𝐾))) / (!‘𝐾)) = ((!‘𝑁) / ((!‘(𝑁𝐾)) · (!‘𝐾))))
3937, 38eqtr4d 2797 . . . . . 6 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (𝑁C𝐾) = (((!‘𝑁) / (!‘(𝑁𝐾))) / (!‘𝐾)))
4039oveq2d 6829 . . . . 5 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → ((!‘𝐾) · (𝑁C𝐾)) = ((!‘𝐾) · (((!‘𝑁) / (!‘(𝑁𝐾))) / (!‘𝐾))))
41 fzfid 12966 . . . . . . . 8 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (1...𝑁) ∈ Fin)
42 elfznn 12563 . . . . . . . . . 10 (𝑛 ∈ (1...𝑁) → 𝑛 ∈ ℕ)
4342adantl 473 . . . . . . . . 9 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ 𝑛 ∈ (1...𝑁)) → 𝑛 ∈ ℕ)
44 nnrp 12035 . . . . . . . . . . 11 (𝑛 ∈ ℕ → 𝑛 ∈ ℝ+)
4544relogcld 24568 . . . . . . . . . 10 (𝑛 ∈ ℕ → (log‘𝑛) ∈ ℝ)
4645recnd 10260 . . . . . . . . 9 (𝑛 ∈ ℕ → (log‘𝑛) ∈ ℂ)
4743, 46syl 17 . . . . . . . 8 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ 𝑛 ∈ (1...𝑁)) → (log‘𝑛) ∈ ℂ)
4841, 47fsumcl 14663 . . . . . . 7 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → Σ𝑛 ∈ (1...𝑁)(log‘𝑛) ∈ ℂ)
49 fzfid 12966 . . . . . . . 8 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (1...(𝑁𝐾)) ∈ Fin)
50 elfznn 12563 . . . . . . . . . 10 (𝑛 ∈ (1...(𝑁𝐾)) → 𝑛 ∈ ℕ)
5150adantl 473 . . . . . . . . 9 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ 𝑛 ∈ (1...(𝑁𝐾))) → 𝑛 ∈ ℕ)
5251, 46syl 17 . . . . . . . 8 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ 𝑛 ∈ (1...(𝑁𝐾))) → (log‘𝑛) ∈ ℂ)
5349, 52fsumcl 14663 . . . . . . 7 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → Σ𝑛 ∈ (1...(𝑁𝐾))(log‘𝑛) ∈ ℂ)
54 efsub 15029 . . . . . . 7 ((Σ𝑛 ∈ (1...𝑁)(log‘𝑛) ∈ ℂ ∧ Σ𝑛 ∈ (1...(𝑁𝐾))(log‘𝑛) ∈ ℂ) → (exp‘(Σ𝑛 ∈ (1...𝑁)(log‘𝑛) − Σ𝑛 ∈ (1...(𝑁𝐾))(log‘𝑛))) = ((exp‘Σ𝑛 ∈ (1...𝑁)(log‘𝑛)) / (exp‘Σ𝑛 ∈ (1...(𝑁𝐾))(log‘𝑛))))
5548, 53, 54syl2anc 696 . . . . . 6 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (exp‘(Σ𝑛 ∈ (1...𝑁)(log‘𝑛) − Σ𝑛 ∈ (1...(𝑁𝐾))(log‘𝑛))) = ((exp‘Σ𝑛 ∈ (1...𝑁)(log‘𝑛)) / (exp‘Σ𝑛 ∈ (1...(𝑁𝐾))(log‘𝑛))))
5625nn0red 11544 . . . . . . . . . . . 12 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (𝑁𝐾) ∈ ℝ)
5756ltp1d 11146 . . . . . . . . . . 11 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (𝑁𝐾) < ((𝑁𝐾) + 1))
58 fzdisj 12561 . . . . . . . . . . 11 ((𝑁𝐾) < ((𝑁𝐾) + 1) → ((1...(𝑁𝐾)) ∩ (((𝑁𝐾) + 1)...𝑁)) = ∅)
5957, 58syl 17 . . . . . . . . . 10 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → ((1...(𝑁𝐾)) ∩ (((𝑁𝐾) + 1)...𝑁)) = ∅)
60 fznn0sub2 12640 . . . . . . . . . . . . . . . 16 (𝐾 ∈ (0...𝑁) → (𝑁𝐾) ∈ (0...𝑁))
6160adantl 473 . . . . . . . . . . . . . . 15 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (𝑁𝐾) ∈ (0...𝑁))
62 elfzle2 12538 . . . . . . . . . . . . . . 15 ((𝑁𝐾) ∈ (0...𝑁) → (𝑁𝐾) ≤ 𝑁)
6361, 62syl 17 . . . . . . . . . . . . . 14 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (𝑁𝐾) ≤ 𝑁)
6463adantr 472 . . . . . . . . . . . . 13 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ (𝑁𝐾) ∈ ℕ) → (𝑁𝐾) ≤ 𝑁)
65 simpr 479 . . . . . . . . . . . . . . 15 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ (𝑁𝐾) ∈ ℕ) → (𝑁𝐾) ∈ ℕ)
66 nnuz 11916 . . . . . . . . . . . . . . 15 ℕ = (ℤ‘1)
6765, 66syl6eleq 2849 . . . . . . . . . . . . . 14 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ (𝑁𝐾) ∈ ℕ) → (𝑁𝐾) ∈ (ℤ‘1))
68 nnz 11591 . . . . . . . . . . . . . . 15 (𝑁 ∈ ℕ → 𝑁 ∈ ℤ)
6968ad2antrr 764 . . . . . . . . . . . . . 14 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ (𝑁𝐾) ∈ ℕ) → 𝑁 ∈ ℤ)
70 elfz5 12527 . . . . . . . . . . . . . 14 (((𝑁𝐾) ∈ (ℤ‘1) ∧ 𝑁 ∈ ℤ) → ((𝑁𝐾) ∈ (1...𝑁) ↔ (𝑁𝐾) ≤ 𝑁))
7167, 69, 70syl2anc 696 . . . . . . . . . . . . 13 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ (𝑁𝐾) ∈ ℕ) → ((𝑁𝐾) ∈ (1...𝑁) ↔ (𝑁𝐾) ≤ 𝑁))
7264, 71mpbird 247 . . . . . . . . . . . 12 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ (𝑁𝐾) ∈ ℕ) → (𝑁𝐾) ∈ (1...𝑁))
73 fzsplit 12560 . . . . . . . . . . . 12 ((𝑁𝐾) ∈ (1...𝑁) → (1...𝑁) = ((1...(𝑁𝐾)) ∪ (((𝑁𝐾) + 1)...𝑁)))
7472, 73syl 17 . . . . . . . . . . 11 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ (𝑁𝐾) ∈ ℕ) → (1...𝑁) = ((1...(𝑁𝐾)) ∪ (((𝑁𝐾) + 1)...𝑁)))
75 simpr 479 . . . . . . . . . . . . . . 15 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ (𝑁𝐾) = 0) → (𝑁𝐾) = 0)
7675oveq2d 6829 . . . . . . . . . . . . . 14 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ (𝑁𝐾) = 0) → (1...(𝑁𝐾)) = (1...0))
77 fz10 12555 . . . . . . . . . . . . . 14 (1...0) = ∅
7876, 77syl6eq 2810 . . . . . . . . . . . . 13 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ (𝑁𝐾) = 0) → (1...(𝑁𝐾)) = ∅)
7978uneq1d 3909 . . . . . . . . . . . 12 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ (𝑁𝐾) = 0) → ((1...(𝑁𝐾)) ∪ (((𝑁𝐾) + 1)...𝑁)) = (∅ ∪ (((𝑁𝐾) + 1)...𝑁)))
80 uncom 3900 . . . . . . . . . . . . . 14 (∅ ∪ (((𝑁𝐾) + 1)...𝑁)) = ((((𝑁𝐾) + 1)...𝑁) ∪ ∅)
81 un0 4110 . . . . . . . . . . . . . 14 ((((𝑁𝐾) + 1)...𝑁) ∪ ∅) = (((𝑁𝐾) + 1)...𝑁)
8280, 81eqtri 2782 . . . . . . . . . . . . 13 (∅ ∪ (((𝑁𝐾) + 1)...𝑁)) = (((𝑁𝐾) + 1)...𝑁)
8375oveq1d 6828 . . . . . . . . . . . . . . 15 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ (𝑁𝐾) = 0) → ((𝑁𝐾) + 1) = (0 + 1))
84 1e0p1 11744 . . . . . . . . . . . . . . 15 1 = (0 + 1)
8583, 84syl6eqr 2812 . . . . . . . . . . . . . 14 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ (𝑁𝐾) = 0) → ((𝑁𝐾) + 1) = 1)
8685oveq1d 6828 . . . . . . . . . . . . 13 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ (𝑁𝐾) = 0) → (((𝑁𝐾) + 1)...𝑁) = (1...𝑁))
8782, 86syl5eq 2806 . . . . . . . . . . . 12 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ (𝑁𝐾) = 0) → (∅ ∪ (((𝑁𝐾) + 1)...𝑁)) = (1...𝑁))
8879, 87eqtr2d 2795 . . . . . . . . . . 11 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ (𝑁𝐾) = 0) → (1...𝑁) = ((1...(𝑁𝐾)) ∪ (((𝑁𝐾) + 1)...𝑁)))
89 elnn0 11486 . . . . . . . . . . . 12 ((𝑁𝐾) ∈ ℕ0 ↔ ((𝑁𝐾) ∈ ℕ ∨ (𝑁𝐾) = 0))
9025, 89sylib 208 . . . . . . . . . . 11 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → ((𝑁𝐾) ∈ ℕ ∨ (𝑁𝐾) = 0))
9174, 88, 90mpjaodan 862 . . . . . . . . . 10 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (1...𝑁) = ((1...(𝑁𝐾)) ∪ (((𝑁𝐾) + 1)...𝑁)))
9259, 91, 41, 47fsumsplit 14670 . . . . . . . . 9 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → Σ𝑛 ∈ (1...𝑁)(log‘𝑛) = (Σ𝑛 ∈ (1...(𝑁𝐾))(log‘𝑛) + Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑛)))
9392oveq1d 6828 . . . . . . . 8 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (Σ𝑛 ∈ (1...𝑁)(log‘𝑛) − Σ𝑛 ∈ (1...(𝑁𝐾))(log‘𝑛)) = ((Σ𝑛 ∈ (1...(𝑁𝐾))(log‘𝑛) + Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑛)) − Σ𝑛 ∈ (1...(𝑁𝐾))(log‘𝑛)))
94 fzfid 12966 . . . . . . . . . 10 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (((𝑁𝐾) + 1)...𝑁) ∈ Fin)
95 nn0p1nn 11524 . . . . . . . . . . . . 13 ((𝑁𝐾) ∈ ℕ0 → ((𝑁𝐾) + 1) ∈ ℕ)
9625, 95syl 17 . . . . . . . . . . . 12 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → ((𝑁𝐾) + 1) ∈ ℕ)
97 elfzuz 12531 . . . . . . . . . . . 12 (𝑛 ∈ (((𝑁𝐾) + 1)...𝑁) → 𝑛 ∈ (ℤ‘((𝑁𝐾) + 1)))
98 eluznn 11951 . . . . . . . . . . . 12 ((((𝑁𝐾) + 1) ∈ ℕ ∧ 𝑛 ∈ (ℤ‘((𝑁𝐾) + 1))) → 𝑛 ∈ ℕ)
9996, 97, 98syl2an 495 . . . . . . . . . . 11 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ 𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)) → 𝑛 ∈ ℕ)
10099, 46syl 17 . . . . . . . . . 10 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ 𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)) → (log‘𝑛) ∈ ℂ)
10194, 100fsumcl 14663 . . . . . . . . 9 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑛) ∈ ℂ)
10253, 101pncan2d 10586 . . . . . . . 8 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → ((Σ𝑛 ∈ (1...(𝑁𝐾))(log‘𝑛) + Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑛)) − Σ𝑛 ∈ (1...(𝑁𝐾))(log‘𝑛)) = Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑛))
10393, 102eqtr2d 2795 . . . . . . 7 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑛) = (Σ𝑛 ∈ (1...𝑁)(log‘𝑛) − Σ𝑛 ∈ (1...(𝑁𝐾))(log‘𝑛)))
104103fveq2d 6356 . . . . . 6 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (exp‘Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑛)) = (exp‘(Σ𝑛 ∈ (1...𝑁)(log‘𝑛) − Σ𝑛 ∈ (1...(𝑁𝐾))(log‘𝑛))))
10522nnne0d 11257 . . . . . . . . 9 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (!‘𝑁) ≠ 0)
106 eflog 24522 . . . . . . . . 9 (((!‘𝑁) ∈ ℂ ∧ (!‘𝑁) ≠ 0) → (exp‘(log‘(!‘𝑁))) = (!‘𝑁))
10723, 105, 106syl2anc 696 . . . . . . . 8 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (exp‘(log‘(!‘𝑁))) = (!‘𝑁))
108 logfac 24546 . . . . . . . . . 10 (𝑁 ∈ ℕ0 → (log‘(!‘𝑁)) = Σ𝑛 ∈ (1...𝑁)(log‘𝑛))
10920, 108syl 17 . . . . . . . . 9 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (log‘(!‘𝑁)) = Σ𝑛 ∈ (1...𝑁)(log‘𝑛))
110109fveq2d 6356 . . . . . . . 8 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (exp‘(log‘(!‘𝑁))) = (exp‘Σ𝑛 ∈ (1...𝑁)(log‘𝑛)))
111107, 110eqtr3d 2796 . . . . . . 7 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (!‘𝑁) = (exp‘Σ𝑛 ∈ (1...𝑁)(log‘𝑛)))
112 eflog 24522 . . . . . . . . 9 (((!‘(𝑁𝐾)) ∈ ℂ ∧ (!‘(𝑁𝐾)) ≠ 0) → (exp‘(log‘(!‘(𝑁𝐾)))) = (!‘(𝑁𝐾)))
11328, 29, 112syl2anc 696 . . . . . . . 8 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (exp‘(log‘(!‘(𝑁𝐾)))) = (!‘(𝑁𝐾)))
114 logfac 24546 . . . . . . . . . 10 ((𝑁𝐾) ∈ ℕ0 → (log‘(!‘(𝑁𝐾))) = Σ𝑛 ∈ (1...(𝑁𝐾))(log‘𝑛))
11525, 114syl 17 . . . . . . . . 9 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (log‘(!‘(𝑁𝐾))) = Σ𝑛 ∈ (1...(𝑁𝐾))(log‘𝑛))
116115fveq2d 6356 . . . . . . . 8 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (exp‘(log‘(!‘(𝑁𝐾)))) = (exp‘Σ𝑛 ∈ (1...(𝑁𝐾))(log‘𝑛)))
117113, 116eqtr3d 2796 . . . . . . 7 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (!‘(𝑁𝐾)) = (exp‘Σ𝑛 ∈ (1...(𝑁𝐾))(log‘𝑛)))
118111, 117oveq12d 6831 . . . . . 6 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → ((!‘𝑁) / (!‘(𝑁𝐾))) = ((exp‘Σ𝑛 ∈ (1...𝑁)(log‘𝑛)) / (exp‘Σ𝑛 ∈ (1...(𝑁𝐾))(log‘𝑛))))
11955, 104, 1183eqtr4d 2804 . . . . 5 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (exp‘Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑛)) = ((!‘𝑁) / (!‘(𝑁𝐾))))
12035, 40, 1193eqtr4d 2804 . . . 4 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → ((!‘𝐾) · (𝑁C𝐾)) = (exp‘Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑛)))
12119, 120eqtrd 2794 . . 3 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (♯‘𝑇) = (exp‘Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑛)))
122 birthday.s . . . . . . . 8 𝑆 = {𝑓𝑓:(1...𝐾)⟶(1...𝑁)}
123 mapvalg 8033 . . . . . . . . 9 (((1...𝑁) ∈ Fin ∧ (1...𝐾) ∈ Fin) → ((1...𝑁) ↑𝑚 (1...𝐾)) = {𝑓𝑓:(1...𝐾)⟶(1...𝑁)})
1244, 3, 123mp2an 710 . . . . . . . 8 ((1...𝑁) ↑𝑚 (1...𝐾)) = {𝑓𝑓:(1...𝐾)⟶(1...𝑁)}
125122, 124eqtr4i 2785 . . . . . . 7 𝑆 = ((1...𝑁) ↑𝑚 (1...𝐾))
126125fveq2i 6355 . . . . . 6 (♯‘𝑆) = (♯‘((1...𝑁) ↑𝑚 (1...𝐾)))
127 hashmap 13414 . . . . . . 7 (((1...𝑁) ∈ Fin ∧ (1...𝐾) ∈ Fin) → (♯‘((1...𝑁) ↑𝑚 (1...𝐾))) = ((♯‘(1...𝑁))↑(♯‘(1...𝐾))))
1284, 3, 127mp2an 710 . . . . . 6 (♯‘((1...𝑁) ↑𝑚 (1...𝐾))) = ((♯‘(1...𝑁))↑(♯‘(1...𝐾)))
129126, 128eqtri 2782 . . . . 5 (♯‘𝑆) = ((♯‘(1...𝑁))↑(♯‘(1...𝐾)))
13016, 11oveq12d 6831 . . . . 5 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → ((♯‘(1...𝑁))↑(♯‘(1...𝐾))) = (𝑁𝐾))
131129, 130syl5eq 2806 . . . 4 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (♯‘𝑆) = (𝑁𝐾))
132 nncn 11220 . . . . . 6 (𝑁 ∈ ℕ → 𝑁 ∈ ℂ)
133132adantr 472 . . . . 5 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → 𝑁 ∈ ℂ)
134 nnne0 11245 . . . . . 6 (𝑁 ∈ ℕ → 𝑁 ≠ 0)
135134adantr 472 . . . . 5 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → 𝑁 ≠ 0)
136 elfzelz 12535 . . . . . 6 (𝐾 ∈ (0...𝑁) → 𝐾 ∈ ℤ)
137136adantl 473 . . . . 5 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → 𝐾 ∈ ℤ)
138 explog 24539 . . . . 5 ((𝑁 ∈ ℂ ∧ 𝑁 ≠ 0 ∧ 𝐾 ∈ ℤ) → (𝑁𝐾) = (exp‘(𝐾 · (log‘𝑁))))
139133, 135, 137, 138syl3anc 1477 . . . 4 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (𝑁𝐾) = (exp‘(𝐾 · (log‘𝑁))))
140131, 139eqtrd 2794 . . 3 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (♯‘𝑆) = (exp‘(𝐾 · (log‘𝑁))))
141121, 140oveq12d 6831 . 2 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → ((♯‘𝑇) / (♯‘𝑆)) = ((exp‘Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑛)) / (exp‘(𝐾 · (log‘𝑁)))))
1429nn0cnd 11545 . . . 4 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → 𝐾 ∈ ℂ)
143 nnrp 12035 . . . . . . 7 (𝑁 ∈ ℕ → 𝑁 ∈ ℝ+)
144143adantr 472 . . . . . 6 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → 𝑁 ∈ ℝ+)
145144relogcld 24568 . . . . 5 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (log‘𝑁) ∈ ℝ)
146145recnd 10260 . . . 4 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (log‘𝑁) ∈ ℂ)
147142, 146mulcld 10252 . . 3 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (𝐾 · (log‘𝑁)) ∈ ℂ)
148 efsub 15029 . . 3 ((Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑛) ∈ ℂ ∧ (𝐾 · (log‘𝑁)) ∈ ℂ) → (exp‘(Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑛) − (𝐾 · (log‘𝑁)))) = ((exp‘Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑛)) / (exp‘(𝐾 · (log‘𝑁)))))
149101, 147, 148syl2anc 696 . 2 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (exp‘(Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑛) − (𝐾 · (log‘𝑁)))) = ((exp‘Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑛)) / (exp‘(𝐾 · (log‘𝑁)))))
150 relogdiv 24538 . . . . . . 7 ((𝑛 ∈ ℝ+𝑁 ∈ ℝ+) → (log‘(𝑛 / 𝑁)) = ((log‘𝑛) − (log‘𝑁)))
15144, 144, 150syl2anr 496 . . . . . 6 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ 𝑛 ∈ ℕ) → (log‘(𝑛 / 𝑁)) = ((log‘𝑛) − (log‘𝑁)))
15299, 151syldan 488 . . . . 5 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ 𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)) → (log‘(𝑛 / 𝑁)) = ((log‘𝑛) − (log‘𝑁)))
153152sumeq2dv 14632 . . . 4 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘(𝑛 / 𝑁)) = Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)((log‘𝑛) − (log‘𝑁)))
15468adantr 472 . . . . . 6 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → 𝑁 ∈ ℤ)
15525nn0zd 11672 . . . . . . 7 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (𝑁𝐾) ∈ ℤ)
156155peano2zd 11677 . . . . . 6 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → ((𝑁𝐾) + 1) ∈ ℤ)
15799, 44syl 17 . . . . . . . . 9 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ 𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)) → 𝑛 ∈ ℝ+)
158144adantr 472 . . . . . . . . 9 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ 𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)) → 𝑁 ∈ ℝ+)
159157, 158rpdivcld 12082 . . . . . . . 8 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ 𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)) → (𝑛 / 𝑁) ∈ ℝ+)
160159relogcld 24568 . . . . . . 7 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ 𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)) → (log‘(𝑛 / 𝑁)) ∈ ℝ)
161160recnd 10260 . . . . . 6 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ 𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)) → (log‘(𝑛 / 𝑁)) ∈ ℂ)
162 oveq1 6820 . . . . . . 7 (𝑛 = (𝑁𝑘) → (𝑛 / 𝑁) = ((𝑁𝑘) / 𝑁))
163162fveq2d 6356 . . . . . 6 (𝑛 = (𝑁𝑘) → (log‘(𝑛 / 𝑁)) = (log‘((𝑁𝑘) / 𝑁)))
164154, 156, 154, 161, 163fsumrev 14710 . . . . 5 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘(𝑛 / 𝑁)) = Σ𝑘 ∈ ((𝑁𝑁)...(𝑁 − ((𝑁𝐾) + 1)))(log‘((𝑁𝑘) / 𝑁)))
165133subidd 10572 . . . . . . 7 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (𝑁𝑁) = 0)
166 1cnd 10248 . . . . . . . . . 10 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → 1 ∈ ℂ)
167133, 142, 166subsubd 10612 . . . . . . . . 9 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (𝑁 − (𝐾 − 1)) = ((𝑁𝐾) + 1))
168167oveq2d 6829 . . . . . . . 8 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (𝑁 − (𝑁 − (𝐾 − 1))) = (𝑁 − ((𝑁𝐾) + 1)))
169 ax-1cn 10186 . . . . . . . . . 10 1 ∈ ℂ
170 subcl 10472 . . . . . . . . . 10 ((𝐾 ∈ ℂ ∧ 1 ∈ ℂ) → (𝐾 − 1) ∈ ℂ)
171142, 169, 170sylancl 697 . . . . . . . . 9 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (𝐾 − 1) ∈ ℂ)
172133, 171nncand 10589 . . . . . . . 8 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (𝑁 − (𝑁 − (𝐾 − 1))) = (𝐾 − 1))
173168, 172eqtr3d 2796 . . . . . . 7 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (𝑁 − ((𝑁𝐾) + 1)) = (𝐾 − 1))
174165, 173oveq12d 6831 . . . . . 6 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → ((𝑁𝑁)...(𝑁 − ((𝑁𝐾) + 1))) = (0...(𝐾 − 1)))
175133adantr 472 . . . . . . . . 9 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ 𝑘 ∈ (0...(𝐾 − 1))) → 𝑁 ∈ ℂ)
176 elfznn0 12626 . . . . . . . . . . 11 (𝑘 ∈ (0...(𝐾 − 1)) → 𝑘 ∈ ℕ0)
177176adantl 473 . . . . . . . . . 10 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ 𝑘 ∈ (0...(𝐾 − 1))) → 𝑘 ∈ ℕ0)
178177nn0cnd 11545 . . . . . . . . 9 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ 𝑘 ∈ (0...(𝐾 − 1))) → 𝑘 ∈ ℂ)
179135adantr 472 . . . . . . . . 9 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ 𝑘 ∈ (0...(𝐾 − 1))) → 𝑁 ≠ 0)
180175, 178, 175, 179divsubdird 11032 . . . . . . . 8 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ 𝑘 ∈ (0...(𝐾 − 1))) → ((𝑁𝑘) / 𝑁) = ((𝑁 / 𝑁) − (𝑘 / 𝑁)))
181175, 179dividd 10991 . . . . . . . . 9 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ 𝑘 ∈ (0...(𝐾 − 1))) → (𝑁 / 𝑁) = 1)
182181oveq1d 6828 . . . . . . . 8 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ 𝑘 ∈ (0...(𝐾 − 1))) → ((𝑁 / 𝑁) − (𝑘 / 𝑁)) = (1 − (𝑘 / 𝑁)))
183180, 182eqtrd 2794 . . . . . . 7 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ 𝑘 ∈ (0...(𝐾 − 1))) → ((𝑁𝑘) / 𝑁) = (1 − (𝑘 / 𝑁)))
184183fveq2d 6356 . . . . . 6 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ 𝑘 ∈ (0...(𝐾 − 1))) → (log‘((𝑁𝑘) / 𝑁)) = (log‘(1 − (𝑘 / 𝑁))))
185174, 184sumeq12rdv 14637 . . . . 5 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → Σ𝑘 ∈ ((𝑁𝑁)...(𝑁 − ((𝑁𝐾) + 1)))(log‘((𝑁𝑘) / 𝑁)) = Σ𝑘 ∈ (0...(𝐾 − 1))(log‘(1 − (𝑘 / 𝑁))))
186164, 185eqtrd 2794 . . . 4 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘(𝑛 / 𝑁)) = Σ𝑘 ∈ (0...(𝐾 − 1))(log‘(1 − (𝑘 / 𝑁))))
187146adantr 472 . . . . . 6 (((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) ∧ 𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)) → (log‘𝑁) ∈ ℂ)
18894, 100, 187fsumsub 14719 . . . . 5 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)((log‘𝑛) − (log‘𝑁)) = (Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑛) − Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑁)))
189 fsumconst 14721 . . . . . . . 8 (((((𝑁𝐾) + 1)...𝑁) ∈ Fin ∧ (log‘𝑁) ∈ ℂ) → Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑁) = ((♯‘(((𝑁𝐾) + 1)...𝑁)) · (log‘𝑁)))
19094, 146, 189syl2anc 696 . . . . . . 7 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑁) = ((♯‘(((𝑁𝐾) + 1)...𝑁)) · (log‘𝑁)))
191 1zzd 11600 . . . . . . . . . . . 12 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → 1 ∈ ℤ)
192 fzen 12551 . . . . . . . . . . . 12 ((1 ∈ ℤ ∧ 𝐾 ∈ ℤ ∧ (𝑁𝐾) ∈ ℤ) → (1...𝐾) ≈ ((1 + (𝑁𝐾))...(𝐾 + (𝑁𝐾))))
193191, 137, 155, 192syl3anc 1477 . . . . . . . . . . 11 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (1...𝐾) ≈ ((1 + (𝑁𝐾))...(𝐾 + (𝑁𝐾))))
19425nn0cnd 11545 . . . . . . . . . . . . 13 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (𝑁𝐾) ∈ ℂ)
195 addcom 10414 . . . . . . . . . . . . 13 ((1 ∈ ℂ ∧ (𝑁𝐾) ∈ ℂ) → (1 + (𝑁𝐾)) = ((𝑁𝐾) + 1))
196169, 194, 195sylancr 698 . . . . . . . . . . . 12 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (1 + (𝑁𝐾)) = ((𝑁𝐾) + 1))
197142, 133pncan3d 10587 . . . . . . . . . . . 12 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (𝐾 + (𝑁𝐾)) = 𝑁)
198196, 197oveq12d 6831 . . . . . . . . . . 11 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → ((1 + (𝑁𝐾))...(𝐾 + (𝑁𝐾))) = (((𝑁𝐾) + 1)...𝑁))
199193, 198breqtrd 4830 . . . . . . . . . 10 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (1...𝐾) ≈ (((𝑁𝐾) + 1)...𝑁))
200 hasheni 13330 . . . . . . . . . 10 ((1...𝐾) ≈ (((𝑁𝐾) + 1)...𝑁) → (♯‘(1...𝐾)) = (♯‘(((𝑁𝐾) + 1)...𝑁)))
201199, 200syl 17 . . . . . . . . 9 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (♯‘(1...𝐾)) = (♯‘(((𝑁𝐾) + 1)...𝑁)))
202201, 11eqtr3d 2796 . . . . . . . 8 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (♯‘(((𝑁𝐾) + 1)...𝑁)) = 𝐾)
203202oveq1d 6828 . . . . . . 7 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → ((♯‘(((𝑁𝐾) + 1)...𝑁)) · (log‘𝑁)) = (𝐾 · (log‘𝑁)))
204190, 203eqtrd 2794 . . . . . 6 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑁) = (𝐾 · (log‘𝑁)))
205204oveq2d 6829 . . . . 5 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑛) − Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑁)) = (Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑛) − (𝐾 · (log‘𝑁))))
206188, 205eqtrd 2794 . . . 4 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)((log‘𝑛) − (log‘𝑁)) = (Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑛) − (𝐾 · (log‘𝑁))))
207153, 186, 2063eqtr3rd 2803 . . 3 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑛) − (𝐾 · (log‘𝑁))) = Σ𝑘 ∈ (0...(𝐾 − 1))(log‘(1 − (𝑘 / 𝑁))))
208207fveq2d 6356 . 2 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → (exp‘(Σ𝑛 ∈ (((𝑁𝐾) + 1)...𝑁)(log‘𝑛) − (𝐾 · (log‘𝑁)))) = (exp‘Σ𝑘 ∈ (0...(𝐾 − 1))(log‘(1 − (𝑘 / 𝑁)))))
209141, 149, 2083eqtr2d 2800 1 ((𝑁 ∈ ℕ ∧ 𝐾 ∈ (0...𝑁)) → ((♯‘𝑇) / (♯‘𝑆)) = (exp‘Σ𝑘 ∈ (0...(𝐾 − 1))(log‘(1 − (𝑘 / 𝑁)))))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 196  wo 382  wa 383   = wceq 1632  wcel 2139  {cab 2746  wne 2932  cun 3713  cin 3714  c0 4058   class class class wbr 4804  wf 6045  1-1wf1 6046  cfv 6049  (class class class)co 6813  𝑚 cmap 8023  cen 8118  Fincfn 8121  cc 10126  0cc0 10128  1c1 10129   + caddc 10131   · cmul 10133   < clt 10266  cle 10267  cmin 10458   / cdiv 10876  cn 11212  0cn0 11484  cz 11569  cuz 11879  +crp 12025  ...cfz 12519  cexp 13054  !cfa 13254  Ccbc 13283  chash 13311  Σcsu 14615  expce 14991  logclog 24500
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1871  ax-4 1886  ax-5 1988  ax-6 2054  ax-7 2090  ax-8 2141  ax-9 2148  ax-10 2168  ax-11 2183  ax-12 2196  ax-13 2391  ax-ext 2740  ax-rep 4923  ax-sep 4933  ax-nul 4941  ax-pow 4992  ax-pr 5055  ax-un 7114  ax-inf2 8711  ax-cnex 10184  ax-resscn 10185  ax-1cn 10186  ax-icn 10187  ax-addcl 10188  ax-addrcl 10189  ax-mulcl 10190  ax-mulrcl 10191  ax-mulcom 10192  ax-addass 10193  ax-mulass 10194  ax-distr 10195  ax-i2m1 10196  ax-1ne0 10197  ax-1rid 10198  ax-rnegex 10199  ax-rrecex 10200  ax-cnre 10201  ax-pre-lttri 10202  ax-pre-lttrn 10203  ax-pre-ltadd 10204  ax-pre-mulgt0 10205  ax-pre-sup 10206  ax-addf 10207  ax-mulf 10208
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3or 1073  df-3an 1074  df-tru 1635  df-fal 1638  df-ex 1854  df-nf 1859  df-sb 2047  df-eu 2611  df-mo 2612  df-clab 2747  df-cleq 2753  df-clel 2756  df-nfc 2891  df-ne 2933  df-nel 3036  df-ral 3055  df-rex 3056  df-reu 3057  df-rmo 3058  df-rab 3059  df-v 3342  df-sbc 3577  df-csb 3675  df-dif 3718  df-un 3720  df-in 3722  df-ss 3729  df-pss 3731  df-nul 4059  df-if 4231  df-pw 4304  df-sn 4322  df-pr 4324  df-tp 4326  df-op 4328  df-uni 4589  df-int 4628  df-iun 4674  df-iin 4675  df-br 4805  df-opab 4865  df-mpt 4882  df-tr 4905  df-id 5174  df-eprel 5179  df-po 5187  df-so 5188  df-fr 5225  df-se 5226  df-we 5227  df-xp 5272  df-rel 5273  df-cnv 5274  df-co 5275  df-dm 5276  df-rn 5277  df-res 5278  df-ima 5279  df-pred 5841  df-ord 5887  df-on 5888  df-lim 5889  df-suc 5890  df-iota 6012  df-fun 6051  df-fn 6052  df-f 6053  df-f1 6054  df-fo 6055  df-f1o 6056  df-fv 6057  df-isom 6058  df-riota 6774  df-ov 6816  df-oprab 6817  df-mpt2 6818  df-of 7062  df-om 7231  df-1st 7333  df-2nd 7334  df-supp 7464  df-wrecs 7576  df-recs 7637  df-rdg 7675  df-1o 7729  df-2o 7730  df-oadd 7733  df-er 7911  df-map 8025  df-pm 8026  df-ixp 8075  df-en 8122  df-dom 8123  df-sdom 8124  df-fin 8125  df-fsupp 8441  df-fi 8482  df-sup 8513  df-inf 8514  df-oi 8580  df-card 8955  df-cda 9182  df-pnf 10268  df-mnf 10269  df-xr 10270  df-ltxr 10271  df-le 10272  df-sub 10460  df-neg 10461  df-div 10877  df-nn 11213  df-2 11271  df-3 11272  df-4 11273  df-5 11274  df-6 11275  df-7 11276  df-8 11277  df-9 11278  df-n0 11485  df-xnn0 11556  df-z 11570  df-dec 11686  df-uz 11880  df-q 11982  df-rp 12026  df-xneg 12139  df-xadd 12140  df-xmul 12141  df-ioo 12372  df-ioc 12373  df-ico 12374  df-icc 12375  df-fz 12520  df-fzo 12660  df-fl 12787  df-mod 12863  df-seq 12996  df-exp 13055  df-fac 13255  df-bc 13284  df-hash 13312  df-shft 14006  df-cj 14038  df-re 14039  df-im 14040  df-sqrt 14174  df-abs 14175  df-limsup 14401  df-clim 14418  df-rlim 14419  df-sum 14616  df-ef 14997  df-sin 14999  df-cos 15000  df-pi 15002  df-struct 16061  df-ndx 16062  df-slot 16063  df-base 16065  df-sets 16066  df-ress 16067  df-plusg 16156  df-mulr 16157  df-starv 16158  df-sca 16159  df-vsca 16160  df-ip 16161  df-tset 16162  df-ple 16163  df-ds 16166  df-unif 16167  df-hom 16168  df-cco 16169  df-rest 16285  df-topn 16286  df-0g 16304  df-gsum 16305  df-topgen 16306  df-pt 16307  df-prds 16310  df-xrs 16364  df-qtop 16369  df-imas 16370  df-xps 16372  df-mre 16448  df-mrc 16449  df-acs 16451  df-mgm 17443  df-sgrp 17485  df-mnd 17496  df-submnd 17537  df-mulg 17742  df-cntz 17950  df-cmn 18395  df-psmet 19940  df-xmet 19941  df-met 19942  df-bl 19943  df-mopn 19944  df-fbas 19945  df-fg 19946  df-cnfld 19949  df-top 20901  df-topon 20918  df-topsp 20939  df-bases 20952  df-cld 21025  df-ntr 21026  df-cls 21027  df-nei 21104  df-lp 21142  df-perf 21143  df-cn 21233  df-cnp 21234  df-haus 21321  df-tx 21567  df-hmeo 21760  df-fil 21851  df-fm 21943  df-flim 21944  df-flf 21945  df-xms 22326  df-ms 22327  df-tms 22328  df-cncf 22882  df-limc 23829  df-dv 23830  df-log 24502
This theorem is referenced by:  birthdaylem3  24879
  Copyright terms: Public domain W3C validator