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Euler's totient function: Number of numbers coprime to (and not bigger than) a given one. Prime-counting function: Number of primes less than or equal to a given number. Partition function: Order-independent count of ways to write a given positive integer as a sum of positive integers.
One can find the standard deviation of an entire population in cases (such as standardized testing) where every member of a population is sampled. In cases where that cannot be done, the standard deviation σ is estimated by examining a random sample taken from the population and computing a statistic of the sample, which is used as an estimate ...
A mathematical constant is a key number whose value is fixed by an unambiguous definition, often referred to by a symbol (e.g., an alphabet letter), or by mathematicians' names to facilitate using it across multiple mathematical problems. [1]
Every integer greater than one is either prime or composite. Polygonal numbers : These are numbers that can be represented as dots that are arranged in the shape of a regular polygon , including Triangular numbers , Square numbers , Pentagonal numbers , Hexagonal numbers , Heptagonal numbers , Octagonal numbers , Nonagonal numbers , Decagonal ...
When an entry name contains special characters such as [,], and |, there is also an anchor, but one has to look at the article source to know it. Finally, when there is an article on the symbol itself (not its mathematical meaning), it is linked to in the entry name.
This following list features abbreviated names of mathematical functions, function-like operators and other mathematical terminology. This list is limited to abbreviations of two or more letters (excluding number sets). The capitalization of some of these abbreviations is not standardized – different authors might use different capitalizations.
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Latin and Greek letters are used in mathematics, science, engineering, and other areas where mathematical notation is used as symbols for constants, special functions, and also conventionally for variables representing certain quantities.