Upwards Double Arrow Symbol

The double upward arrow is a standard symbol on many keyboards, often labeled as the "Page Up" key or printed on the keycap itself, where it indicates moving the view or cursor up by one screenful of content. It also appears in digital interfaces and documentation as a navigation icon for scrolling upward or returning to the top of a page.

As a typographic symbol in the Arrows block, this character represents a doubled or emphasized upward direction, distinct from the single upward arrow. It is used in mathematical notation, logical diagrams, and technical writing to denote a stronger or repeated upward movement, mapping, or relationship, such as in linear algebra for a double-headed arrow indicating a two-way mapping or in computer science for a function that returns a value.