Security
(Tech Xplore)—What will Google think of next? Actually, if you are looking at the goings on of the Google Brain team you are right to suspect they don't want to be thinking at all. They would rather put their AI resources ...
Security
(Tech Xplore)—Security research alert: There is something around called KeySniffer. Hang around with the wrong kind of keyboard, and you may find it has sniffed up personal identification and access numbers you really do ...
Internet
When someone types your name into Google, suppose the first link points to a newspaper article about you going bankrupt 15 years ago, or to a YouTube video of you smoking cigarettes 20 years ago, or simply a webpage that ...
Jul 11, 2016
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8
Security
Data breaches are a regular part of the cyberthreat landscape. They generate a great deal of media attention, both because the quantity of information stolen is often large, and because so much of it is data people would ...
Jun 22, 2016
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5
Consumer & Gadgets
Passwords or personal identification number are often not secure, because users do not choose or store them well. With so-called biometric identifiers such as fingerprints, voice or iris scans, users can be identified more ...
May 12, 2016
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247
Engineering
A paper submitted on May 2 to arXiv begins its discussion by noting that quantum random number generators (QRNGs) can improve the security of cryptographic protocols by ensuring that generated keys cannot be predicted, The ...
Software
(Phys.org) —Ask any teenager trading selfies and very random thoughts: Some messages unlike diamonds should best be not forever. Confide, a company that makes an app with the same name, thinks that business people have ...
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
