Ulysses, Writing, Scientific Writing.
as ~$C_i$~, with C_i being the LaTeX code. If you would like your equation to appear on a separate line, as eq. 1 below, it needs to be written between two double dollar signs $$. Equation 1 below appears as ~ $$C_i=\underbrace{\frac{x}{b}}_{\ddot{a}}$$~ in the raw Markdown block in Ulysses. eq. 1