User:Physikerwelt/sandbox/T132660

\dots are not rendered consistently within <\math> in wikipedia.org. e.g. in

$$\mathcal{U}_1,\mathcal{U}_2,\dots\in\mathcal{A}$$

the dots are rendered to the bottom of line as required. But in

$$\mathcal{U}_1,\mathcal{U}_2,\dots$$

The dots are rendered as in \cdots