The amsmath package is a LATEX package that provides miscellaneous enhance- ments for improving the information structure and printed output of documents that contain mathematical formulas. Abc sqrtnabc abcf widetildeabc zabc underbraceabc 3 Delimiters. It is sometimes useful to add text in Latex formulas or equations.
For example Emc2 will give Emc2.
The align environment will align the equations at the ampersand. Mathematics Maths Equations Algebra Calculus Geometry Geometry etc. Open an example of the amsmath package in Overleaf. For a more complete list see the List of Greek letters and math symbols.