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Thanks so much for the fast reply, I eventually figured it out!

I have one more question, how do I type a dot multiplication symbol in text rather than using the new equation parameters?

for example (u - v "dot" v/2)

Thanks so much!

Hi, I am a beginner just starting to learn LaTeX, I have a couple of questions:
excerpt.png
First, how do I type St with t as a subscript?

Second, how do I type the first equation? I need something like
dSt = u S dt + v S dWt

For this I typed:
\begin{equation}\label{GMB}
{dS$_t$} = u\S\{dt} + v ...