## Sign Function Wikipedia

### Sign function - Wikipedia.

The signum function is the derivative of the absolute value function, up to (but not including) the indeterminacy at zero. More formally, in integration theory it is a weak derivative, and in convex function theory the subdifferential of the absolute value at 0 is the interval [-1, 1], "filling in" the sign function (the subdifferential of the absolute value is not single-valued at 0)..

https://en.wikipedia.org/wiki/Sign_function.

### Dollar sign - Wikipedia.

The dollar sign, also known as peso sign, is a symbol consisting of a capital "S" crossed with one or two vertical strokes (\$ or | |), used to indicate the unit of various currencies around the world, including most currencies denominated "peso" and "dollar".The sign is also used as an element of several compound currency symbols, such as the Brazilian real (R\$) and the Nicaraguan ....

https://en.wikipedia.org/wiki/Dollar_sign.

### Sign (mathematics) - Wikipedia.

Sign of a number. Numbers from various number systems, like integers, rationals, complex numbers, quaternions, octonions, ... may have multiple attributes, that fix certain properties of a number.If a number system bears the structure of an ordered ring, for example, the integers, it must contain a number that does not change any number when it is added to it (an additive ....

https://en.wikipedia.org/wiki/Sign_(mathematics).

### Gaussian function - Wikipedia.

for arbitrary real constants a, b and non-zero c.It is named after the mathematician Carl Friedrich Gauss.The graph of a Gaussian is a characteristic symmetric "bell curve" shape.The parameter a is the height of the curve's peak, b is the position of the center of the peak, and c (the standard deviation, sometimes called the Gaussian RMS width) controls the width of the "bell"..

https://en.wikipedia.org/wiki/Gaussian_function.

Benefits and function. The sign-and-trade helps NBA teams capitalize on financial assets that they would otherwise lose--with nothing gained in return--if a player became a free agent. It is a factor in the departing player's increased salary and extended contract. It helps the team gaining the player, by enabling it to offer a better/more ....

### Plus–minus sign - Wikipedia.

The plus-minus sign, +-, is a mathematical symbol with multiple meanings.. In mathematics, it generally indicates a choice of exactly two possible values, one of which is obtained through addition and the other through subtraction.; In experimental sciences, the sign commonly indicates the confidence interval or uncertainty bounding a range of possible errors in a ....

https://en.wikipedia.org/wiki/Plus%E2%80%93minus_sign.

### Domain Name System - Wikipedia.

The Domain Name System (DNS) is the hierarchical and decentralized naming system used to identify computers reachable through the Internet or other Internet Protocol (IP) networks. The resource records contained in the DNS associate domain names with other forms of information. These are most commonly used to map human-friendly domain names to the numerical IP ....

https://en.wikipedia.org/wiki/Domain_Name_System.

### IEEE 754 - Wikipedia.

The IEEE Standard for Floating-Point Arithmetic (IEEE 754) is a technical standard for floating-point arithmetic established in 1985 by the Institute of Electrical and Electronics Engineers (IEEE). The standard addressed many problems found in the diverse floating-point implementations that made them difficult to use reliably and portably.Many hardware floating-point units use the ....

https://en.wikipedia.org/wiki/IEEE_754.

### Code smell - Wikipedia.

In computer programming, a code smell is any characteristic in the source code of a program that possibly indicates a deeper problem. Determining what is and is not a code smell is subjective, and varies by language, developer, and development methodology. . The term was popularised by Kent Beck on WardsWiki in the late 1990s. Usage of the term increased after it was featured in ....

https://en.wikipedia.org/wiki/Code_smell.

### Physiology - Wikipedia.

Physiology (/ ? f I z i ' ? l ? d? i /; from Ancient Greek ????? (phusis) 'nature, origin', and -????? (-logia) 'study of') is the scientific study of functions and mechanisms in a living system. As a sub-discipline of biology, physiology focuses on how organisms, organ systems, individual organs, cells, and biomolecules carry out the chemical and physical functions in a ....

https://en.wikipedia.org/wiki/Physiology.

### Antiderivative - Wikipedia.

In calculus, an antiderivative, inverse derivative, primitive function, primitive integral or indefinite integral of a function f is a differentiable function F whose derivative is equal to the original function f.This can be stated symbolically as F' = f. The process of solving for antiderivatives is called antidifferentiation (or indefinite integration), and its opposite operation is called ....

https://en.wikipedia.org/wiki/Antiderivative.

### Wikipedia:Signatures - Wikipedia.

Purpose of signatures. Signatures on Wikipedia identify you as a user and your contributions to Wikipedia. They encourage civility, collaboration, and communication by identifying the author of a particular comment and the date and time at which it was made.Because of that, having an uncivil signature (especially one that makes any kind of personal attacks toward someone ....

https://en.wikipedia.org/wiki/Wikipedia:Signatures.

### Digital signature - Wikipedia.

A digital signature is a mathematical scheme for verifying the authenticity of digital messages or documents. A valid digital signature, where the prerequisites are satisfied, gives a recipient very high confidence that the message was created by a known sender (authenticity), and that the message was not altered in transit ().Digital signatures are a standard element of most ....

https://en.wikipedia.org/wiki/Digital_signature.

### Sign test - Wikipedia.

The sign test is a statistical method to test for consistent differences between pairs of observations, such as the weight of subjects before and after treatment. Given pairs of observations (such as weight pre- and post-treatment) for each subject, the sign test determines if one member of the pair (such as pre-treatment) tends to be greater than (or less than) the ....

https://en.wikipedia.org/wiki/Sign_test.

### Hash - Wikipedia.

Number sign (#), also known as the hash, hash mark, or (in American English) pound sign; Service stripe, a military and paramilitary decoration; Tally mark, a counting notation; Computing. Hash function, an encoding of data into a small, fixed size; used in hash tables and cryptography; Hash table, a data structure using hash functions.

https://en.wikipedia.org/wiki/Hash.

### Web application - Wikipedia.

A web application (or web app) is application software that runs in a web browser, unlike software programs that run locally and natively on the operating system (OS) of the device.Web applications are delivered on the World Wide Web to users with an active network connection..

https://en.wikipedia.org/wiki/Web_application.

In mathematics and computing, the hexadecimal (also base 16 or simply hex) numeral system is a positional numeral system that represents numbers using a radix (base) of 16. Unlike the decimal system representing numbers using 10 symbols, hexadecimal uses 16 distinct symbols, most often the symbols "0"-"9" to represent values 0 to 9, and "A"-"F" (or alternatively "a"-"f") to ....