So you want to give an equation a name in LaTeX, instead of the number it gets automatically… For some reason, Google will resist telling you how. You may be tempted to use the
eqname package. No need! No need at all! Use the
\tag command. Why isn’t this easier to figure out?
UPDATE: I apologize to the writers of the
amsmath documentation, who mention this pretty much immediately after they introduce the concept of equation numbering. I always assume that Google can find these things for me.