## A Quick reference

### A Dictionary of Weights, Measures, and Units

*Metric* As a lower-case prefix a-, see atto-.

length. *Metric* Correctly Å, see angstrom.

area

## a- Quick reference

### The Concise Oxford Dictionary of Mathematics (5 ed.)

Prefix meaning ‘not’. For example, an asymmetric figure is one which possesses no symmetry, which is not symmetrical.

## A Quick reference

### The Concise Oxford Dictionary of Mathematics (5 ed.)

The number 10 in hexadecimal notation.

## A* algorithm Quick reference

### A Dictionary of Computer Science (7 ed.)

A member of the class of *best-first *heuristic search techniques that attempt to find a ‘best’ path from

## Aalen model Quick reference

### A Dictionary of Statistics (3 ed.)

A *linear regression model describing the manner in which the *expected value of a response variable, *Z*(...

##
a_{anom}
Quick reference

### A Dictionary of Weights, Measures, and Units

[annum]

time. Anomalistic year; see anomalistic and year.

## abacus Quick reference

### The Concise Oxford Dictionary of Mathematics (5 ed.)

A counting device consisting of rods on which beads can be moved so as to represent numbers.

## abampere Quick reference

### A Dictionary of Weights, Measures, and Units

[absolute ampere]

(biot) electric current. Symbol abA. *Metric-c.g.s.-e.m.u* 1 abA = the constant current that produces, when

## Abandonment Quick reference

### A Dictionary of the Internet (3 ed.)

## Abandonware Quick reference

### A Dictionary of the Internet (3 ed.)

Software that is no longer being sold by the company that developed and marketed it.

## Abbe, Ernst Carl (1840) Quick reference

### A Dictionary of Statistics (3 ed.)

Abbe’s father was a book printer and factory worker and his childhood was one of privation. Nevertheless, he studied at U Jena and U Göttingen, receiving his PhD in ...

## abbreviation Quick reference

### A Dictionary of the Internet (3 ed.)

The Web and the Internet float on a flood of abbreviations. They are often used to save time when, for example, writing an ...

## ABC Quick reference

### A Dictionary of Computer Science (7 ed.)

1. *Abbrev. for* Atanasoff-Berry computer.

2. An interactive programming language designed as a replacement for Basic by CWI (Centrum

## abcoulomb Quick reference

### A Dictionary of Weights, Measures, and Units

electric charge. Symbol abC. *Metric-c.g.s.* The absolute coulomb of the e.m.u. system, for a steady current identically s⋅abA.

## abdaraf Quick reference

### A Dictionary of Weights, Measures, and Units

electric elastance. Symbol abD. *Metric-c.g.s.* The absolute daraf of the e.m.u. system, for a steady current identically abV/abC,

## abduction Quick reference

### A Dictionary of Computer Science (7 ed.)

An *inference process widely used in *artificial intelligence, particularly in *expert systems and *production rule

## Abel, Niels Henrik (1802–29) Quick reference

### The Concise Oxford Dictionary of Mathematics (5 ed.)

who, at the age of 19, proved that the general equation of degree greater than 4 cannot be solved algebraically.

## abelian group Quick reference

### The Concise Oxford Dictionary of Mathematics (5 ed.)

Suppose that *G* is a *group with the operation ￮. Then *G* is abelian if the operation ￮ is