Browse Definitions :

# Mathematics

Terms related to mathematics, including definitions about logic, algorithms and computations and mathematical terms used in computer science and business.

## PER - ZIP

• per cent symbol (%) - The per cent symbol is used in mathematics, engineering, and science to indicate parts per hundred.
• per mil symbol - The per mil symbol is used in mathematics, and especially in economics, to indicate parts per thousand.
• percent change (percent difference) - Percent change -- also known as percent difference.
• perceptron - A perceptron is a simple model of a biological neuron in an artificial neural network.
• point-to-point graph (line graph) - A point-to-point graph, also called a line graph, is a pictorial rendition of data in which specific values of a function are plotted as dots on a coordinate plane.
• polar coordinates - Polar coordinates provide a method of rendering graphs and indicating the positions of points on a two-dimensional (2D) surface.
• polynomial interpolation - Polynomial interpolation is a method of estimating values between known data points.
• population - In statistics and other areas of mathematics, a population is a complete collection of entities or items that has at least one characteristic in common.
• positive correlation - A positive correlation is a relationship between two variables such that their values increase or decrease together.
• prime number - A prime number is a whole number greater than 1 whose only factors are 1 and itself.
• probabilistic robotics - Probabilistic robotics, also called statistical robotics, is a field of robotics that involves the control and behavior of robots in environments subject to unforeseeable events.
• probability - Probability is a branch of mathematics that deals with calculating the likelihood of a given event's occurrence, which is expressed as a number between 1 and 0.
• proportionality - In mathematics, proportionality indicates that two quantities or variables are related in a linear manner.
• pseudo-random number generator (PRNG) - A pseudo-random number generator (PRNG) is a program written for, and used in, probability and statistics applications when large quantities of random digits are needed.
• Q format - Q (number) format is a fixed-point method of coding fractional and whole integers for processing by a computer’s CPU or a digital signal processor (DSP).
• quant (quantitative analyst) - A quant (quantitative analyst) is a financial services professional whose qualifications also include advanced mathematics and and computer skills.
• radian - The radian is the Standard International (SI) unit of plane angular measure.
• random numbers - Random numbers are numbers that occur in a sequence such that two conditions are met: ( the values are uniformly distributed over a defined interval or set, and (2) it is impossible to predict future values based on past or present ones.
• random walk hypothesis - Random walk hypothesis is a mathematical theory where a variable does not follow an apparent trend and moves seemingly at random.
• rational number - A rational number is a number determined by the ratio of some integer p to some nonzero natural number q.
• real number - A real number is any element of the set R, which is the union of the set of rational numbers and the set of irrational numbers.
• root-mean-square (RMS) - In a direct current (DC) circuit, voltage or current is simple to define, but in an alternating current (AC) circuit, the definition is more complicated, and can be done in several ways.
• rounding error - Rounding error is the difference between a rounded-off numerical value and the actual value.
• scatter plot - A scatter plot is a set of points plotted on a horizontal and vertical axes.
• secret key algorithm (symmetric algorithm) - A secret key algorithm (sometimes called a symmetric algorithm) is a cryptographic algorithm that uses the same key to encrypt and decrypt data.
• singleton - In object-oriented programming, a singleton class is a class that can have only one object (an instance of the class) at a time.
• skewness - Skewness is asymmetry in a statistical distribution, in which the curve appears distorted or skewed either to the left or to the right.
• space - In mathematics, space is an unbounded continuum (unbroken set of points) in which exactly three numerical coordinates are necessary to uniquely define the location of any particular point.
• square meter (meter squared) - The square meter, also called the meter squared, is the Standard International (SI) unit of area.
• standing-wave ratio (SWR, VWSR, IWSR) - Standing-wave ratio (SWR) is a mathematical expression of the non-uniformity of an electromagnetic field (EM field) on a transmission line such as coaxial cable.
• statistical analysis - Statistical analysis is the collection and interpretation of data in order to uncover patterns and trends.
• STEM (science, technology, engineering, and mathematics) - STEM is an educational program developed to prepare primary and secondary students for college and graduate study in the fields of science, technology, engineering, and mathematics (STEM).
• steradian - The steradian (symbolized sr) is the Standard International (SI) unit of solid angular measure.
• stochastic - Generally, stochastic (pronounced stow-KAS-tik, from the Greek stochastikos, or "skilled at aiming," since stochos is a target) describes an approach to anything that is based on probability.
• stochastic optimization - Stochastic optimization is the process of maximizing or minimizing the value of a mathematical or statistical function when one or more of the input parameters is subject to randomness.
• time - Time is an observed phenomenon, by means of which human beings sense and record changes in the environment and in the universe.
• transcendental number - A transcendental number is a real number that is not the solution of any single-variable polynomial equation whose coefficients are all integers.
• traveling salesman problem (TSP) - The traveling salesman problem (TSP) is an algorithmic problem tasked with finding the shortest route between a set of points and locations that must be visited.
• truncation error - Truncation error is the difference between a truncated value and the actual value.
• union symbol - The union symbol () denotes the union of two set s.
• unique identifier (UID) - A unique identifier (UID) is a numeric or alphanumeric string that is associated with a single entity within a given system.
• universal set - A universal set is the collection of all objects in a particular context or theory.
• Venn diagram - A Venn diagram is an illustration of the relationships between and among sets, groups of objects that share something in common.
• vertical line (vertical slash or upright slash) - The vertical line, also called the vertical slash or upright slash (|), is used in mathematical notation in place of the expression "such that" or "it is true that.
• wave number - The term wave number refers to the number of complete wave cycles of an electromagnetic field (EM field) that exist in one meter (1 m) of linear space.
• x and y coordinates - x, y coordinates are respectively the horizontal and vertical addresses of any pixel or addressable point on a computer display screen.
• zero (0) - In mathematics, zero, symbolized by the numeric character 0, is both a place indicator meaning "no units of this multiple" in a positional number system, and an independent value midway between +1 and -1.
• zettaflops - Zettaflop or (ZFlop) is a processing power of one septillion floating point operations per second (FLOPS).
• Zipf's Law - Zipf’s Law is a statistical distribution in certain data sets, such as words in a linguistic corpus, in which the frequencies of certain words are inversely proportional to their ranks.

## SearchCompliance

• ### risk assessment

Risk assessment is the identification of hazards that could negatively impact an organization's ability to conduct business.

• ### PCI DSS (Payment Card Industry Data Security Standard)

The Payment Card Industry Data Security Standard (PCI DSS) is a widely accepted set of policies and procedures intended to ...

• ### risk management

Risk management is the process of identifying, assessing and controlling threats to an organization's capital and earnings.

## SearchSecurity

• ### Federal Information Security Management Act (FISMA)

The Federal Information Security Management Act (FISMA) is United States legislation that defines a framework of guidelines and ...

• ### CISO as a service (vCISO, virtual CISO, fractional CISO)

A CISO as a service (CISOaaS) is the outsourcing of CISO (chief information security officer) and information security leadership...

• ### access control

Access control is a security technique that regulates who or what can view or use resources in a computing environment.

## SearchHealthIT

• ### HIPAA (Health Insurance Portability and Accountability Act)

HIPAA (Health Insurance Portability and Accountability Act) is United States legislation that provides data privacy and security ...

• ### telemedicine (telehealth)

Telemedicine is the remote delivery of healthcare services, such as health assessments or consultations, over the ...

• ### Project Nightingale

Project Nightingale is a controversial partnership between Google and Ascension, the second largest health system in the United ...

## SearchDisasterRecovery

• ### call tree

A call tree is a layered hierarchical communication model that is used to notify specific individuals of an event and coordinate ...

• ### Disaster Recovery as a Service (DRaaS)

Disaster recovery as a service (DRaaS) is the replication and hosting of physical or virtual servers by a third party to provide ...

• ### cloud disaster recovery (cloud DR)

Cloud disaster recovery (cloud DR) is a combination of strategies and services intended to back up data, applications and other ...

## SearchStorage

• ### FCoE (Fibre Channel over Ethernet)

FCoE (Fibre Channel over Ethernet) is a storage protocol that enable Fibre Channel (FC) communications to run directly over ...

• ### Fibre Channel switch (FC switch)

A Fibre Channel switch is a networking device that is compatible with the Fibre Channel (FC) protocol and designed for use in a ...

• ### SAN switch (storage area network switch)

A storage area network (SAN) switch is a device that connects servers and shared pools of storage devices and is dedicated to ...

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