Diseases, Conditions, Syndromes

Turkey to lift travel ban, open gyms, restaurants on June 1

A coronavirus travel ban between Turkey's worst affected cities is being lifted while restaurants, cafes and sports facilities will reopen on June 1, the country's president said Thursday, under the next phase of plans to ...

Genetics

Korean Genome Project data released for public use

A team of researchers with members affiliated with a large number of institutions in Korea, two in the U.S. and one in the U.K. has released data from the initial phase of the Korean Genome Project (Korea1K). In their paper ...

Diseases, Conditions, Syndromes

Turkey reports 34 new deaths and 1,035 COVID-19 cases

Turkey's health minister said Wednesday that the country recorded 34 coronavirus-related deaths since the day before, bringing the country's COVID-19 death toll to 4,431.

Diseases, Conditions, Syndromes

American virus deaths at 100,000: What does a number mean?

The fraught, freighted number of this particular American moment is a round one brimming with zeroes: 100,000. A hundred thousands. A thousand hundreds. Five thousand score. More than 8,000 dozen. All dead.

Diseases, Conditions, Syndromes

Turkey sees drop in daily coronavirus infections

Turkey on Thursday reported its lowest daily increase in confirmed coronavirus cases in the past two months, with 961 new infections in the past 24 hours.

Diseases, Conditions, Syndromes

By the numbers, COVID-19 was never 'like the flu'

In the early days of the coronavirus pandemic, President Donald Trump announced that Americans need not worry because the new coronavirus was "like a flu."

Diseases, Conditions, Syndromes

China's ground zero reports virus infections (Update)

China reported a new cluster of coronavirus cases in Wuhan Monday after a month without fresh infections at the pandemic's global epicentre, as a northeastern city was placed under lockdown.

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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.

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