\overbrace{a+b+c}^{\text{note}}
The overbrace command in LaTeX is used to place a brace over a mathematical expression, often with an annotation or note above it. This is particularly useful for highlighting or explaining parts of an equation or expression, providing clarity or additional information to the reader.
Annotating the sum of terms a, b, and c.
\overbrace{a+b+c}^{\text{sum of terms}}
Indicating the total sum of a series of terms.
\overbrace{x_1+x_2+\cdots+x_n}^{\text{total sum}}
Highlighting the sum of angles alpha and beta.
\overbrace{\alpha+\beta}^{\text{angles}}