Software

New method enables automated protections for sensitive data

Just as people need to protect their sensitive data, such as social security numbers, manufacturing companies need to protect their sensitive corporate data. There are currently fewer protections for proprietary manufacturing ...

Security

Popular messenger services are extremely insecure

Researchers from the Technical University of Darmstadt and the University of Würzburg show that popular mobile messengers expose personal data via discovery services that allow users to find contacts based on phone numbers ...

Computer Sciences

Scientists create application for finding parking spaces

Computer vision and image recognition could solve the problem of a shortage of parking spaces in Chelyabinsk. As part of the work on the Smart City program, scientists from South Ural State University proposed using the already ...

Telecom

Study debunks robocall myths, lays groundwork for stopping them

New research from North Carolina State University finds that the number of robocalls isn't going up, and that answering a robocall doesn't make you more likely to get additional robocalls. However, stories you've heard about ...

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Number

A number is a mathematical object used to count and measure. In mathematics, the definition of number has been extended over the years to include such numbers as zero, negative numbers, rational numbers, irrational numbers, and complex numbers.

Mathematical operations are certain procedures that take one or more numbers as input and produce a number as output. Unary operations take a single input number and produce a single output number. For example, the successor operation adds one to an integer, thus the successor of 4 is 5. Binary operations take two input numbers and produce a single output number. Examples of binary operations include addition, subtraction, multiplication, division, and exponentiation. The study of numerical operations is called arithmetic.

A notational symbol that represents a number is called a numeral. In addition to their use in counting and measuring, numerals are often used for labels (telephone numbers), for ordering (serial numbers), and for codes (e.g., ISBNs).

In common use, the word number can mean the abstract object, the symbol, or the word for the number.

This text uses material from Wikipedia, licensed under CC BY-SA