Tool made of wood and wire, used for simple arithmetic operations. It is also called "counting frame".

# Tag Archives | Mathematics

## ABELIAN GROUP

Also known as commutative group. Group where final result does not depend on the order of performed arithmetic operations.

## ABSCISSA

In mathematics it refers to the line which is plotted on the horizontal axis of a two-dimensional Cartesian coordinate system; it lays perpendicular to the y-axis.

## ABSOLUTE

Perfect in quality; complete; pure; unquestionable, unconditional and final thing.

## ABSOLUTE CONVERGENCE

In mathematics, a series of numbers whose sum of absolute value is finite.

## ABUNDANT NUMBER

Number for which the sum of its divisors is greater than the number itself. 12 is the first abundant number: 1 + 2 + 3 + 4 + 6 = 16 > 12.

## ACCUMULATION POINT

A point which is the limit of a sequence. It is also called a limit point.

## AD INFINITUM

Latin phrase used to describe a non-terminating process. It literally means "to infinity" and " forevermore".