I am not fluent in the mathematical formula coding language “Tex” or any of its offshoots. They are used in Notion and Obsidian for writing math. I always have to look stuff up. This is a very incomplete syntax cheat sheet.
Basics
$$- Math delimiter, place on both sides\- the main escape character, saying “this is special”^- superscript_- subscript{}- partitioning syntax\frac{a}{b}- fractions\sqrt{a}- square root\sqrt[n]{a}- nth root\text{text here}
$$ a^2 = \frac{x_a}{\sqrt{x_b}} \text{ means nothing} $$
Equivalency
\le- less than equal to\ge- greater than equal to\approx- approximate\equiv- equivalent
$$ a \le b \ge c \approx d \equiv e $$
It’s all Greek to me
\alpha- all greek letters\infty- infinity
$$ \alpha = \beta + \gamma < \infty $$
Big Operators
\sum- sum sign\int- integral sign\leftarrow&\Leftarrow- arrows, capitalized is thicker\rightarrow&\Rightarrow- arrows, capitalized is thicker\leftrightarrow&\Leftrightarrow- arrows, capitalized is thicker
$$ \sum{a, b} \Leftrightarrow \int{3x+3 dx} $$