The arev package provides type 1 fonts, virtual fonts and LaTeX packages for using Arev Sans in both text and mathematics. Arev Sans is a derivative of Bitstream Vera Sans, adding support for Greek and Cyrillic characters and a few variant letters appropriate for mathematics. The font is primarily used in LaTeX for presentations, particularly when using a computer projector. Arev Sans has large x-height, open letters, wide spacing and thick stems. The style is very similar to the SliTeX font lcmss but heavier. Arev is one of a very small number of sans-font mathematics support packages.