Not all note follow the convention in here (especially earlier notes), but I will try to follow it more closely in the future.
Object
Notation
Explaination
scalar
Scalars are represented in lower-case letters
vector
Vector (and vector-value functions) are represented in bold letters (there are some exceptions, like gradient is often written as something like )
normalized vector
matrix
Matrices are represented as upper-case letters
point
Points are also represented as upper-case letters. Note that in some notes, points and vectors are not distinguished (and in those cases, points will have vector notation like )
Sets
Set Operations
Operation
Notation
Explaination
set complement
Use overline () rather than ^\complement () or ^\mathsf{c} () in this note