Following is the list of important MathML elements.

• <maction> − Provides option to bind actions to subexpressions/expressions.

• <math> − It is top or root level element and is used to encapsulate each instance of MathML instance. Every valid MathML expression should be wrapped in outer <math> tag. It can contain any number of child elements. One math element cannot contain another math element tag.

• <menclose> − Renders its content inside an enclosing notation specified by the notation attribute.

• <merror> − Used to display contents as error message.

• <mfenced> − Provides the option to add custom opening and closing parentheses and separators to an expression.

• <mfrac> − Used to display fractions.

• <mglyph> − Used to display non-standard symbols where existing Unicode characters are not available.

• <mi> − Used to specify an identifier such as name of a variable, function or a constant etc. For example, <mi>PI</mi> .

• <mlabeledtr> − Used to represent a label in a row either on the left or on the right side using side attribute of mtable. Child elements of mlabeledtr must be mtd elements.

• <mmultiscripts> − Provides options to create tensor-like objects.

• <mn> − Used to specify a numerical literal like 3.14 etc. For example, <mn>3.14</mn>.

• <mo> − Used to specify an operator like +, – etc. For example, <mo>+</mo>.

• <mover> − Used to attach an accent or a limit over an expression.

• <mpadded> − Used to add extra padding and to set the general adjustment of position and size of enclosed contents.

• <mphantom> − Used to create space as it is rendered invisibly, keeping height, width, and baseline position intact.

• <mroot> − Used to display roots with an explicit index.

• <mrow> − Used to group any number of sub expressions in horizontal way.

• <ms> − Used to represent a string literal meant to be interpreted by programming languages and computer algebra systems.

• <mspace> − Used to display a blank space, where its size is set using its attributes.

• <msqrt> − Used to display square root.

• <mstyle> − Used to apply the style on its children.

• <msub> − Used to attach a subscript to an expression. It uses the following syntax: <msub> base subscript </msub>.

• <msubsup> − Used to attach both a subscript and a superscript, together, to an expression. It uses the following syntax: <msubsup> base subscript superscript </msubsup>.

• <msup> − Used to attach a superscript to an expression. It uses the following syntax: msup base superscript </msup>.

• <mtable> − Provides options to create tables or matrices.

• <mtd> − To represent a cell in a table or a matrix.

• <mtext> − Used to render text with no notational meaning, such as comments or annotations.

• <mtr> − Represents a row in a table or a matrix.

• <munder> − Provides option to attach an accent or a limit under an expression. It uses the following syntax: <munder> base underscript </munder>

• <munderover> − Provides option to attach accents or limits both under and over an expression. It uses the following syntax: </munderover> base underscript overscript </munderover>

• <semantics> − <semantics>,<annotation> and <annotation-xml> are used to add presentation and content markup and provides both, layout information and semantic meaning of mathematical expressions.