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The Chinese mathematician Liu Hui in 263 CE computed π to between 3.141 024 and 3.142 708 by inscribing a 96-gon and 192-gon; the average of these two values is 3.141 866 (accuracy 9·10 −5). He also suggested that 3.14 was a good enough approximation for practical purposes.
The gamma function is an important special function in mathematics. Its particular values can be expressed in closed form for integer and half-integer arguments, but no simple expressions are known for the values at rational points in general. Other fractional arguments can be approximated through efficient infinite products, infinite series ...
The Catálogo alfabético de apellidos (English: Alphabetical Catalogue of Surnames; Filipino: Alpabetikong Katalogo ng mga apelyido) is a book of surnames in the Philippines and other islands of Spanish East Indies published in the mid-19th century. That was in response to a Spanish colonial decree establishing the distribution of Spanish ...
September 1994. First version for Windows 3.1. Windows, Mac, SunOS, Solaris, HP-UX, IRIX, AIX, OS/2. Acrobat Catalog, which creates searchable indexes for PDF files. Adobe also released the first Acrobat Plug-ins SDK; allowing third-party developers to create plug-in programs for the Acrobat Exchange application. 3.0.
A simple fraction (also known as a common fraction or vulgar fraction, where vulgar is Latin for "common") is a rational number written as a / b or , where a and b are both integers. [ 9] As with other fractions, the denominator ( b) cannot be zero. Examples include 1 2 , − 8 5 , −8 5 , and 8 −5 .
Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines. . Released in beta in November 2004, the Google Scholar index includes peer-reviewed online academic journals and books, conference papers, theses and dissertations, preprints, abstracts, technical reports, and other ...
Spending accelerated sharply in the second quarter to an annual rate of 2.3%, up from 1.5% in the first quarter, as consumers spent a bit less on services but much more on goods.
History of PDF. The Portable Document Format (PDF) was created by Adobe Systems, introduced at the Windows and OS/2 Conference in January 1993 and remained a proprietary format until it was released as an open standard in 2008. Since then, it has been under the control of an International Organization for Standardization (ISO) committee of ...