Footnotes in LaTeX

Introduction : LaTex Footnote Package

An additional piece of information/details added at the bottom of any document is called Footnotes. In this section, we will learn how to add footnotes in LaTeX.

It is very simple and straightforward to add a footnote in any LaTeX document.

Command \footnote{...} is used to add the footnote in LaTeX. There is no need to add any package, it is by default supported in LaTeX.

Example of a footnote in LaTeX:

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This is my first footnote article \footnote{www.resurchify.com}

Basic usage of footnotes in LaTeX: Footnote URL/Anything

Now, let us look go in details and understand the basic usage of footnotes in LaTeX

To understand consider the below example to footnote URL/Anything

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Future 5G cellular networks\footnote[1]{New Radio Cellular Networks}
are expected to support several-fold increase in data traffic and
number of devices\footnotemark , and provide a very low latency
and gigabit-rate data services.
\footnotetext{User Equipments}

The above example uses three different commands:

• \footnote[1]{New Radio Cellular Networks} : This command will add the reference mark 1 and New Radio Cellular Networks as a footnote.
  Note: This command does not alter the footnote counter.
• \footnotemark: This command will print the footnote mark but will not print the actual footnote. This footnote command allows you to write footnote text in the new line.
• \footnotetext{User Equipments}: This command will print the footnote text User Equipments corresponding to the preceding \footnotemark

Footnotes with multiple references

LaTeX allows you to add multiple references to the single footnote mark. Consider the below example:

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The future 5G cellular networks\footnote[1]{New Radio Cellular Networks}
are expected to support several-fold increase in data traffic and number
of devices\footnotemark , and provide very low latency and gigabit-rate data services.
Considering this growth of data rates due to increased devices\footnotemark,
we need  new technologies\footnotemark[\value{footnote}].
\footnotetext{footnote using two references}

Command \footnotemark[\value{footnote}] will print the subscript corresponding to the present value of \footnote counter.

How to Change the numbering style of Footnotes in LaTeX

In order to change the numbering style consider the below example:

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\footnotetext{This is an example of changing the numbering style}
\renewcommand{\thefootnote}{\alph{footnote}}
Now a footnote in alph\footnote{Footnote with alph style}

The supported numbering styles are as follows:

• alph : Alphabetic lower case.
• Alph : Alphabetic upper case.
• arabic : Arabic numerals.
• fnsymbol : A set of 9 special symbols.
• Roman : Upper case Roman numerals.

Note: In order to change the number styling of the complete document, you need to include the above commands in the preamble of the document.

Footnote without number in LaTeX

In order to insert foonote without adding number mark in LateX, use the following declaration:

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\let\thefootnote\relax\footnote{This foonote is without numbering}

The above declaration will switch off the footnote number marking globally.

Insert Footnote with symbol in LaTeX

Sometimes you may be required to add symbol instead of number while including foonote in your article. To do so, you can make use of footmisc package alongwith the symbol option.

Below is the illustration:

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\usepackage[symbol]{footmisc}
\renewcommand{\thefootnote}{\fnsymbol{footnote}}
\footnote[number]{text}

Insert Footnote with asterisk

To add a footnote with an asterisk, use the below declaration:

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\usepackage[symbol]{footmisc}
\renewcommand{\thefootnote}{\fnsymbol{footnote}}
\footnote[1]{text}