(mathematics, education) An informally defined area of algebra considered suitable to be taught to secondary school students.

(linear algebra) A square matrix which is obtained from the identity matrix by a single elementary row (or column) operation.

plural of elementary equivalence

(logic) A relation between two structures which have the property that every first-order formula is valid in one structure if and only if it is valid in the other.

(physics) The electric charge on a single proton

A pure chemical substance consisting of a single element (e.g. hydrogen gas).

(category theory) A Cartesian closed category which has a subobject classifier.

A student who goes to an elementary school.

plural of elementary schooler

plural of elementary charge