Computer Sciences

Is it growing pains or is ChatGPT just becoming dumber?

OpenAI's widely celebrated large language model has been hailed as "quite simply the best artificial intelligence chatbot ever released to the general public" by Kevin Roose, author of "Futureproof: 9 Rules for Humans in ...

Machine learning & AI

Physical systems perform machine-learning computations

You may not be able to teach an old dog new tricks, but Cornell researchers have found a way to train physical systems, ranging from computer speakers and lasers to simple electronic circuits, to perform machine-learning ...

Security

New software continuously scrambles code to foil cyber attacks

As long as humans are writing software, there will be coding mistakes for malicious hackers to exploit. A single bug can open the door to attackers deleting files, copying credit card numbers or carrying out political mischief.

page 2 from 24

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