Question

Is it possible using Greek alphabet to represent variables in MATLAB?

For example, I’d like to use the Greek character epsilon as a variable in MATLAB. I tried to insert \epsilon but I received an error.

Answer 1

It is not possible.

I refer to the following part of Matlab documentation:

Valid Names

A valid variable name starts with a letter, followed by letters,
digits, or underscores. MATLAB is case sensitive, so A and a are not
the same variable. The maximum length of a variable name is the value
that the namelengthmax command returns.

Letter is defined as ANSI character between a-z and A-Z.
For example, the following hebrew letter Aleph returns false (in Matlab R2018a returns true):

isletter('א')

By the way, you can always check whether your variable name is fine by using genvarname.

genvarname('א')

ans =

x0x1A