정다각형

이 항목의 스프링노트 원문주소

• 정다각형

 

 

개요

\(\sin \frac{h\pi}{n}\sin \frac{k\pi}{n}=\sum_{j=0}^{k-1}\sin \frac{(h-k+2j+1)\pi}{n}\sin \frac{\pi}{n}\)

 

재미있는 사실

 

• Math Overflow http://mathoverflow.net/search?q=
• 네이버 지식인 http://kin.search.naver.com/search.naver?where=kin_qna&query=

 

 

역사

 

• http://www.google.com/search?hl=en&tbs=tl:1&q=
• Earliest Known Uses of Some of the Words of Mathematics
• Earliest Uses of Various Mathematical Symbols
• 수학사연표

 

 

메모

• A. Fontaine and S. Hurley, Proof by picture: Products and reciprocals of diagonal length ratios in the regular polygon, Forum Geom., 6 (2006) 97–101.
• Formulas among diagonals in the regular polygon and the Catalan numbers
• http://www.math.rutgers.edu/~erowland/polygons.html
• http://twistedone151.wordpress.com/2010/10/25/monday-math-140/
• http://twistedone151.wordpress.com/2010/11/01/monday-math-141/

 

 

관련된 항목들

• 정오각형
•  
• 삼각함수
• 다이로그 항등식 (dilogarithm identities)

 

 

수학용어번역

• 단어사전 http://www.google.com/dictionary?langpair=en%7Cko&q=
• 발음사전 http://www.forvo.com/search/
• 대한수학회 수학 학술 용어집
  
  • http://mathnet.kaist.ac.kr/mathnet/math_list.php?mode=list&ftype=eng_term&fstr=
• 남·북한수학용어비교
• 대한수학회 수학용어한글화 게시판

 

 

사전 형태의 자료

• http://ko.wikipedia.org/wiki/
• http://planetmath.org/encyclopedia/ExampleOfTelescopingSum.html
• http://en.wikipedia.org/wiki/
• http://www.proofwiki.org/wiki/
• http://www.wolframalpha.com/input/?i=
• NIST Digital Library of Mathematical Functions
• The On-Line Encyclopedia of Integer Sequences
  
  • http://www.research.att.com/~njas/sequences/?q=

 

 

관련논문

• Golden Fields: A Case for the Heptagon
  
  • Peter Steinbach, Mathematics Magazine Vol. 70, No. 1 (Feb., 1997), pp. 22-31
• http://www.jstor.org/action/doBasicSearch?Query=
• http://www.ams.org/mathscinet
• http://dx.doi.org/

 

 

관련도서

• 도서내검색
  
  • http://books.google.com/books?q=
  • http://book.daum.net/search/contentSearch.do?query=
• 도서검색
  
  • http://books.google.com/books?q=
  • http://book.daum.net/search/mainSearch.do?query=
  • http://book.daum.net/search/mainSearch.do?query=

 

 

관련기사

• 네이버 뉴스 검색 (키워드 수정)
  
  • http://news.search.naver.com/search.naver?where=news&x=0&y=0&sm=tab_hty&query=
  • http://news.search.naver.com/search.naver?where=news&x=0&y=0&sm=tab_hty&query=
  • http://news.search.naver.com/search.naver?where=news&x=0&y=0&sm=tab_hty&query=

 

 

링크

• 구글 블로그 검색
  
  • http://blogsearch.google.com/blogsearch?q=
• 네이버 오늘의과학
• Mathematical Moments from the AMS
• BetterExplained
• exampleproblems.com