Stix fonts is a OpenType Unicode fonts for Scientific, Technical, and Mathematical texts.
The Scientific and Technical Information eXchange (STIX) fonts are intended to meet the demanding needs of authors, publishers, printers, and others in the scientific, medical, and technical fields. They combine a comprehensive Unicode-based collection of mathematical symbols and alphabets with a set of text faces suitable for professional publishing.
The STIX Two fonts consist of four text fonts (Regular, Italic, Bold, and Bold Italic) and one Math font. Together, they provide a uniform set of fonts that can be used throughout the production process, whether that be a traditional print-only process, an entirely electronic one, or a combination of the two.