--- The Elementary Charge (symbol ''e'' or sometimes ''q'') is the Electric Charge carried by a single Proton , or equivalently, the negative of the electric charge carried by a single Electron .
--- Elementary Algebra is the most basic form of Algebra taught to students who are presumed to have no knowledge of mathematics beyond the basic principles of Arithmetic .
---In Differential Algebra , an Elementary Function is a function built from a finite number of exponentials, logarithms, constants, one variable, and roots of equations through composition and combinations using the four elementary operations (+ − × ÷).
