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DLMF:25.11.E45
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Formula:8412
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MaRDI QID
Q8412
Label: DLMF:25.11.E45
Digital Library of Mathematical Functions ID
25.11.E45
ζ
′
(
-
2
,
a
)
-
1
12
a
+
1
9
a
3
-
(
1
6
a
-
1
2
a
2
+
1
3
a
3
)
ln
a
∼
∑
k
=
1
∞
2
B
2
k
+
2
(
2
k
+
2
)
(
2
k
+
1
)
2
k
(
2
k
-
1
)
a
-
(
2
k
-
1
)
.
asymptotic-expansion
diffop
Hurwitz-zeta
1
2
𝑎
1
12
𝑎
1
9
superscript
𝑎
3
1
6
𝑎
1
2
superscript
𝑎
2
1
3
superscript
𝑎
3
𝑎
superscript
subscript
𝑘
1
2
Bernoulli-number-B
2
𝑘
2
2
𝑘
2
2
𝑘
1
2
𝑘
2
𝑘
1
superscript
𝑎
2
𝑘
1
{\displaystyle{\displaystyle\zeta'\left(-2,a\right)-\frac{1}{12}a+\frac{1}{9}a% ^{3}-\left(\frac{1}{6}a-\frac{1}{2}a^{2}+\frac{1}{3}a^{3}\right)\ln a\sim\sum_% {k=1}^{\infty}\frac{2B_{2k+2}}{(2k+2)(2k+1)2k(2k-1)}a^{-(2k-1)}.}}
Constraint(s)
Symbols List
B
n
Bernoulli-number-B
𝑛
{\displaystyle{\displaystyle B_{\NVar{n}}}}
:
ζ
(
s
,
a
)
Hurwitz-zeta
𝑠
𝑎
{\displaystyle{\displaystyle\zeta\left(\NVar{s},\NVar{a}\right)}}
: Hurwitz zeta function
∼
asymptotic-expansion
{\displaystyle{\displaystyle\sim}}
:
ln
z
𝑧
{\displaystyle{\displaystyle\ln\NVar{z}}}
: principal branch of logarithm function
k
𝑘
{\displaystyle{\displaystyle k}}
: nonnegative integer
a
𝑎
{\displaystyle{\displaystyle a}}
: real or complex parameter
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