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2. Microsoft Excel - Wikipedia

   en.wikipedia.org/wiki/Microsoft_Excel

   Microsoft Excel is a spreadsheet editor developed by Microsoft for Windows, macOS, Android, iOS and iPadOS.It features calculation or computation capabilities, graphing tools, pivot tables, and a macro programming language called Visual Basic for Applications (VBA).

3. Spreadsheet - Wikipedia

   en.wikipedia.org/wiki/Spreadsheet

   Formulas in the B column multiply values from the A column using relative references, and the formula in B4 uses the SUM() function to find the sum of values in the B1:B3 range. A formula identifies the calculation needed to place the result in the cell it is contained within. A cell containing a formula, therefore, has two display components ...

4. Logical spreadsheet - Wikipedia

   en.wikipedia.org/wiki/Logical_spreadsheet

   A logical spreadsheet is a spreadsheet in which formulas take the form of logical constraints rather than function definitions.. In traditional spreadsheet systems, such as Excel, cells are partitioned into "directly specified" cells and "computed" cells and the formulas used to specify the values of computed cells are "functional", i.e. for every combination of values of the directly ...

5. Data Analysis Expressions - Wikipedia

   en.wikipedia.org/wiki/Data_Analysis_eXpressions

   Data Analysis Expressions (DAX) is the native formula and query language for Microsoft PowerPivot, Power BI Desktop and SQL Server Analysis Services (SSAS) Tabular models. DAX includes some of the functions that are used in Excel formulas with additional functions that are designed to work with relational data and perform dynamic aggregation.

6. VisiCalc - Wikipedia

   en.wikipedia.org/wiki/VisiCalc

   VisiCalc ("visible calculator") [1] is the first spreadsheet computer program for personal computers, [2] originally released for the Apple II by VisiCorp on October 17, 1979. [1] [3] It is considered the killer application for the Apple II, [4] turning the microcomputer from a hobby for computer enthusiasts into a serious business tool, and then prompting IBM to introduce the IBM PC two years ...

7. Google Sheets - Wikipedia

   en.wikipedia.org/wiki/Google_Sheets

   Google Sheets is a spreadsheet application and part of the free, web-based Google Docs Editors suite offered by Google.Google Sheets is available as a web application; a mobile app for: Android, iOS, and as a desktop application on Google's ChromeOS.

8. List of mathematical functions - Wikipedia

   en.wikipedia.org/wiki/List_of_mathematical_functions

   Thomae's function: is a function that is continuous at all irrational numbers and discontinuous at all rational numbers. It is also a modification of Dirichlet function and sometimes called Riemann function. Kronecker delta function: is a function of two variables, usually integers, which is 1 if they are equal, and 0 otherwise.

9. Well-formed formula - Wikipedia

   en.wikipedia.org/wiki/Well-formed_formula

   The next step is to define the atomic formulas. If t 1 and t 2 are terms then t 1 =t 2 is an atomic formula; If R is an n-ary predicate symbol, and t 1,...,t n are terms, then R(t 1,...,t n) is an atomic formula; Finally, the set of formulas is defined to be the smallest set containing the set of atomic formulas such that the following holds: