# Can anyone tell me how these condensed typefaces are created?

I have seen the following before in different math publications. Could anyone explain how the words 'GMRES, CG, BICGSTAB' are being created to give them that condensed typeface?

• \textsc{GMRES} – user2478 Feb 22 '17 at 14:32
• @Herbert you mean \textsc{gmres}! – Andrew Swann Feb 22 '17 at 14:40
• Welcome to TeX - LaTeX! These are "small capitals" font. – Andrew Swann Feb 22 '17 at 14:42

This typeface is called small caps, and is produced with the \textsc macro.
\documentclass{article}