samsetningarlínu

Samsetningarlína is an Icelandic term that literally means "composition line" or "line of combination." It is not a standard term in core Icelandic mathematics, but appears in some texts to describe a line that is formed by combining two or more linear elements or constraints.

In mathematics, the phrase is sometimes used as a descriptive label for constructions that involve combining lines. A precise interpretation that is sometimes encountered is the Minkowski sum of two lines L1 and L2, defined as L1 + L2 = {x + y : x in L1, y in L2}. In this sense, if L1 and L2 are parallel, the sum is a line parallel to them; if they are not parallel, the sum is the entire plane, not a single line. Thus samsetningarlína is not a standard object but a convenient, context-dependent descriptor.

In the realm of computer graphics, CAD, or digital typography, samsetningarlína may describe a polyline: a connected sequence of straight segments that together form a continuous line path. Polylines are used to approximate curves, define outlines, and model drawings.

Etymology: samsetning means composition or combination and lina means line; together they form "line of composition." The term remains uncommon outside specific discussions, so readers should rely on local definition when they encounter it.

See also: Minkowski sum, polyline, affine combination.