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The centred dot is the usual product sign in algebra and the dot product in vector work. \cdots is the horizontal ellipsis that sits at the same height, used between operators in a long sum or product.
All ways to write it
| Command | Use | Package | Copy |
|---|---|---|---|
\cdot | single centred dot | none | |
\cdots | three centred dots, for sequences | none | |
\bullet | heavier bullet, • | none |
Example
\mathbf{a} \cdot \mathbf{b} = a_1 b_1 + a_2 b_2 + \cdots + a_n b_nThe dot product written out, with \cdots standing in for the middle terms.
Questions
What is the difference between \cdot, \cdots and \ldots?
\cdot is one dot. \cdots is three raised dots for use between operators (1 + 2 + ⋯). \ldots is three dots on the baseline, for lists (1, 2, …).
Related symbols
- Multiplication ×
\times - Cross product ×
\times
Using dot operator in Confluence
Confluence Cloud has no built-in LaTeX. With LaTeX Math for Confluence you add a math macro to any page, type \cdot and it renders inline or as a block, with a live preview while you edit. Every command on this page renders there without extra packages.