"조화수열과 조화급수"의 두 판 사이의 차이

수학노트
둘러보기로 가기 검색하러 가기
1번째 줄: 1번째 줄:
<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">이 항목의 스프링노트 원문주소</h5>
+
<h5 style="line-height: 3.428em; margin: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic',dotum,gulim,sans-serif; font-size: 1.166em; background-position: 0px 100%;">이 항목의 스프링노트 원문주소</h5>
  
 
 
 
 
5번째 줄: 5번째 줄:
 
 
 
 
  
<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">개요</h5>
+
<h5 style="line-height: 3.428em; margin: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic',dotum,gulim,sans-serif; font-size: 1.166em; background-position: 0px 100%;">개요</h5>
  
 
*  조화수열의 정의<br><math>H_{n}=\sum_{k=1}^{n}\frac{1}{k}</math><br>
 
*  조화수열의 정의<br><math>H_{n}=\sum_{k=1}^{n}\frac{1}{k}</math><br>
17번째 줄: 17번째 줄:
 
 
 
 
  
<h5 style="line-height: 2em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;">성질</h5>
+
<h5 style="line-height: 2em; margin: 0px;">성질</h5>
  
 
<math>H_{n-1}=H_n-\frac{1}{n}</math>
 
<math>H_{n-1}=H_n-\frac{1}{n}</math>
27번째 줄: 27번째 줄:
 
 
 
 
  
<h5 style="line-height: 2em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;">생성함수</h5>
+
<h5 style="line-height: 2em; margin: 0px;">생성함수</h5>
  
 
<math>\sum_{n=1}^\infty H_nz^n  =  \frac {-\ln(1-z)}{1-z}</math>
 
<math>\sum_{n=1}^\infty H_nz^n  =  \frac {-\ln(1-z)}{1-z}</math>
35번째 줄: 35번째 줄:
 
 
 
 
  
<h5 style="line-height: 2em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;">생성함수의 응용</h5>
+
<h5 style="line-height: 2em; margin: 0px;">생성함수의 응용</h5>
  
 
<math>\sum_{n=1}^\infty \frac{H_n}{n+1}z^{n+1}  =\frac{1}{2}\log^2(1-z)</math>
 
<math>\sum_{n=1}^\infty \frac{H_n}{n+1}z^{n+1}  =\frac{1}{2}\log^2(1-z)</math>
61번째 줄: 61번째 줄:
 
 
 
 
  
<h5 style="line-height: 2em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;">조화수열과 급수</h5>
+
<h5 style="line-height: 2em; margin: 0px;">조화수열과 급수</h5>
  
 
<math>\sum_{n=1}^{\infty}\frac{H_n^2}{(n+1)^2}=\frac{11\pi^4}{360}</math>
 
<math>\sum_{n=1}^{\infty}\frac{H_n^2}{(n+1)^2}=\frac{11\pi^4}{360}</math>
73번째 줄: 73번째 줄:
 
 
 
 
  
 
+
<h5 style="line-height: 2em; margin: 0px;">역사</h5>
 
 
 
 
 
 
<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">재미있는 사실</h5>
 
 
 
 
 
 
 
* Math Overflow http://mathoverflow.net/search?q=
 
* 네이버 지식인 http://kin.search.naver.com/search.naver?where=kin_qna&query=
 
 
 
 
 
 
 
 
 
 
 
<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">역사</h5>
 
  
 
 
 
 
100번째 줄: 85번째 줄:
 
 
 
 
  
<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">메모</h5>
+
<h5 style="line-height: 3.428em; margin: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic',dotum,gulim,sans-serif; font-size: 1.166em; background-position: 0px 100%;">메모</h5>
  
 
http://sos440.tistory.com/202
 
http://sos440.tistory.com/202
  
 
+
http://sos440.tistory.com/200
  
 
 
 
 
  
<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">관련된 항목들</h5>
+
<h5 style="line-height: 3.428em; margin: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic',dotum,gulim,sans-serif; font-size: 1.166em; background-position: 0px 100%;">관련된 항목들</h5>
  
 
* [[오일러상수, 감마]]<br>
 
* [[오일러상수, 감마]]<br>
119번째 줄: 104번째 줄:
 
 
 
 
  
<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">수학용어번역</h5>
+
<h5 style="line-height: 3.428em; margin: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic',dotum,gulim,sans-serif; font-size: 1.166em; background-position: 0px 100%;">수학용어번역</h5>
  
 
* 단어사전 http://www.google.com/dictionary?langpair=en|ko&q=
 
* 단어사전 http://www.google.com/dictionary?langpair=en|ko&q=
132번째 줄: 117번째 줄:
 
 
 
 
  
<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">사전 형태의 자료</h5>
+
<h5 style="line-height: 3.428em; margin: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic',dotum,gulim,sans-serif; font-size: 1.166em; background-position: 0px 100%;">사전 형태의 자료</h5>
  
 
* [http://ko.wikipedia.org/wiki/%EC%A1%B0%ED%99%94%EA%B8%89%EC%88%98 http://ko.wikipedia.org/wiki/조화급수]
 
* [http://ko.wikipedia.org/wiki/%EC%A1%B0%ED%99%94%EA%B8%89%EC%88%98 http://ko.wikipedia.org/wiki/조화급수]
* http://en.wikipedia.org/wiki/Harmonic_series_(mathematics)
+
* [http://en.wikipedia.org/wiki/Harmonic_series_%28mathematics%29 http://en.wikipedia.org/wiki/Harmonic_series_(mathematics)]
 
* http://en.wikipedia.org/wiki/Harmonic_number
 
* http://en.wikipedia.org/wiki/Harmonic_number
 
* http://mathworld.wolfram.com/HarmonicNumber.html
 
* http://mathworld.wolfram.com/HarmonicNumber.html
141번째 줄: 126번째 줄:
 
* http://www.wolframalpha.com/input/?i=
 
* http://www.wolframalpha.com/input/?i=
 
* [http://dlmf.nist.gov/ NIST Digital Library of Mathematical Functions]
 
* [http://dlmf.nist.gov/ NIST Digital Library of Mathematical Functions]
* [http://www.research.att.com/~njas/sequences/index.html The On-Line Encyclopedia of Integer Sequences]<br>
+
* [http://www.research.att.com/%7Enjas/sequences/index.html The On-Line Encyclopedia of Integer Sequences]<br>
 
** http://www.research.att.com/~njas/sequences/?q=
 
** http://www.research.att.com/~njas/sequences/?q=
  
148번째 줄: 133번째 줄:
 
 
 
 
  
<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">관련논문</h5>
+
<h5 style="line-height: 3.428em; margin: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic',dotum,gulim,sans-serif; font-size: 1.166em; background-position: 0px 100%;">관련논문</h5>
  
 
* [http://www.jstor.org/stable/2160718 On an Intriguing Integral and Some Series Related to ζ(4)]<br>
 
* [http://www.jstor.org/stable/2160718 On an Intriguing Integral and Some Series Related to ζ(4)]<br>
160번째 줄: 145번째 줄:
 
 
 
 
  
<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">관련도서</h5>
+
<h5 style="line-height: 3.428em; margin: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic',dotum,gulim,sans-serif; font-size: 1.166em; background-position: 0px 100%;">관련도서</h5>
  
 
*  도서내검색<br>
 
*  도서내검색<br>
174번째 줄: 159번째 줄:
 
 
 
 
  
<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">관련기사</h5>
+
<h5 style="line-height: 3.428em; margin: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic',dotum,gulim,sans-serif; font-size: 1.166em; background-position: 0px 100%;">관련기사</h5>
  
 
*  네이버 뉴스 검색 (키워드 수정)<br>
 
*  네이버 뉴스 검색 (키워드 수정)<br>
185번째 줄: 170번째 줄:
 
 
 
 
  
<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">블로그</h5>
+
<h5 style="line-height: 3.428em; margin: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic',dotum,gulim,sans-serif; font-size: 1.166em; background-position: 0px 100%;">블로그</h5>
  
 
*  구글 블로그 검색<br>
 
*  구글 블로그 검색<br>

2012년 1월 19일 (목) 09:10 판

이 항목의 스프링노트 원문주소

 

 

개요
  • 조화수열의 정의
    \(H_{n}=\sum_{k=1}^{n}\frac{1}{k}\)

 

\(\gamma=0.577215664901532860606512090\cdots\)

 

성질

\(H_{n-1}=H_n-\frac{1}{n}\)

\(H_{n-1}^2=(H_n-\frac{1}{n})^2=H_n^2+\frac{1}{n^2}-\frac{2H_n}{n}\)

 

 

생성함수

\(\sum_{n=1}^\infty H_nz^n = \frac {-\ln(1-z)}{1-z}\)

 

 

생성함수의 응용

\(\sum_{n=1}^\infty \frac{H_n}{n+1}z^{n+1} =\frac{1}{2}\log^2(1-z)\)

\(\sum_{n=1}^\infty \frac{H_n}{n}z^n =\operatorname{Li}_2(z)+\frac{1}{2}\log^2(1-z)\)

 

\(z=e^{it}\), \(0 \leq t \leq \pi\) 에서 

위 식의 실수부를 취하면, 각각 다음 식을 얻는다.

\(\sum_{n=1}^\infty \frac{H_n}{n+1}\sin (n+1)t=\frac{1}{2}(t-\pi)\log(2\sin\frac{t}{2})\)

\(\sum_{n=1}^\infty \frac{H_n}{n}\sin nt=\operatorname{Cl}_2(t)+\frac{1}{2}(t-\pi)\log(2\sin\frac{t}{2})\)

로바체프스키와 클라우센 함수

 

 

 

 

조화수열과 급수

\(\sum_{n=1}^{\infty}\frac{H_n^2}{(n+1)^2}=\frac{11\pi^4}{360}\)

\(\sum_{n=1}^{\infty}\frac{H_n^2}{n^2}=\frac{17\pi^4}{360}\)

\(\sum_{n=1}^{\infty}\frac{H_n}{n^3}=\frac{\pi^4}{72}\)

 

 

역사

 

 

 

메모

http://sos440.tistory.com/202

http://sos440.tistory.com/200

 

관련된 항목들

 

 

수학용어번역

 

 

사전 형태의 자료

 

 

관련논문

 

 

관련도서

 

 

관련기사

 

 

블로그