I am currently struggling to find a way to write : enter image description here

I know of \cdots and \cdot but the output is one dot and 3 dots but not two. What is a possible solution to my problem?

Thanks in advance.

  • 1
    – egreg
    Jul 9, 2019 at 15:33

1 Answer 1


You can define your own symbol; since it is a binary operation, use \mathbin; the \cdot symbol can then be repeated twice.


\DeclareMathAlphabet{\mathsfbfsl}{OT1}{\sfdefault}{bx}{sl} % for boldface slanted sans serif





enter image description here

  • 1
    Thank you very much for such a detailed and good answer.
    – sulphur
    Jul 9, 2019 at 15:57

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