You can think of mathematical symbols as representing math objects. They are fairly new in unicode and yes different alphabets can be used. Like the symbol for

You can think of mathematical symbols as representing math objects. They are fairly new in unicode and yes different alphabets can be used. Like the symbol for infinity is from the Hebrew alphabet. Unicode gives them different codepoints so that screen readers and eventually one day renderer engines can typeset them correctly. Of course if you try to understand some of the more esoteric math subjects, is now mostly diagrammatic. I dont understand them to be honest!