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Mathematica > Low-Level Notebook Structure >

Built-in Mathematica Symbol

RadicalBox

RadicalBox[x, n]
is a low-level box construct that represents the displayed object

in notebook expressions.

In a notebook a RadicalBox can be created using Ctrl+@ or Ctrl+2, then using Ctrl+% to move to the index position. Ctrl+Space moves out of the radical.

In StandardForm and InputForm, RadicalBox[x, n] is interpreted on input as x^(1/n).

In StandardForm, explicit RadicalBox objects are output literally. You can use DisplayForm to see the display form of such objects.

Display a letter under a radical with a root index:

Out[1]//DisplayForm=

A RadicalBox form is typically interpreted as a fractional power:

Out[2]//FullForm=

The TraditionalForm formatting for an

root uses RadicalBox:

Out[1]//FullForm=

Out[2]//TraditionalForm=