Computer Sciences
A team of researchers affiliated with a host of institutions across China has modified Shor's algorithm in a way that could allow less powerful quantum computers to crack current cryptosystems. The team describes their modifications ...
Business
Retailers are scoring one win in the governmentwide spending bill, which will force online marketplaces like Amazon and Facebook to verify high-volume sellers on their platforms amid heightened concerns about retail crime.
Dec 23, 2022
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9
Business
Elon Musk's abrupt suspension of several journalists who cover Twitter widens a growing rift between the social media site and media organizations that have used the platform to build their audiences.
Dec 18, 2022
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3
Security
A hacker who reportedly posed as the CEO of a financial institution claims to have obtained access to the more than 80,000-member database of InfraGard, an FBI-run outreach program that shares sensitive information on national ...
Dec 15, 2022
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17
Business
It is common to hear news reports about large data breaches, but what happens once your personal data is stolen? Our research shows that, like most legal commodities, stolen data products flow through a supply chain consisting ...
Dec 5, 2022
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9
Consumer & Gadgets
Millions of Australians have had their privacy breached in recent cyber attacks against Optus, Medibank and other companies.
Nov 3, 2022
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4
Internet
Instagram said it was working on an issue that left a seemingly large number of users locked out of their accounts Monday morning.
Oct 31, 2022
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17
Security
A Ukrainian man has been charged with computer fraud for allegedly infecting millions of computers with malware in a cybercrime operation known as "Raccoon Infostealer," the US Justice Department said Tuesday.
Oct 25, 2022
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29
Business
Japan has stepped up its push to catch up on digitization by telling a reluctant public they have to sign up for digital IDs or possibly lose access to their public health insurance.
Oct 25, 2022
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31
Security
Retirees from the Baltimore school system are having trouble with pension and health care payments two years after a ransomware attack. The identity of a child in Toledo, Ohio, is being used to apply for credit months after ...
Oct 11, 2022
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35
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
