ddag

Represents a double dagger symbol commonly used as a secondary footnote marker or reference indicator in academic writing.

Overview

Serves as a specialized reference mark in academic and technical documents, particularly when multiple footnotes or citations need distinct markers on the same page.

Often used as the second or third level of footnote marking, following the single dagger (†)
Common in mathematical proofs, linguistic annotations, and scholarly publications
Particularly useful in documents where asterisks and single daggers have already been employed
Maintains professional typographical standards in formal academic writing

Examples

Marking a second footnote reference in mathematical text.

Let x = y^2\ddag

Let x = y^2\ddag

Using double daggers to denote special conditions in an equation.

f(x) = \begin{cases} x^2 & x > 0\ddag \\ -x^2 & x \leq 0 \end{cases}

f(x) = \begin{cases} x^2 & x > 0\ddag \\ -x^2 & x \leq 0 \end{cases}

Indicating multiple special cases or references in an expression.

P(x)\ddag = Q(x)\ddag \implies x \in \mathbb{R}

P(x)\ddag = Q(x)\ddag \implies x \in \mathbb{R}