2 ms·
Well, to be fair, sometimes the X is a Greek upper case Chi. Mathematics ran out of Greek and Roman a while back and Hebrew has appeared - א (as in "Aleph Null"
by stevedonovan 6y ago
Well, to be fair, sometimes the X is a Greek upper case Chi. Mathematics ran out of Greek and Roman a while back and Hebrew has appeared - א (as in "Aleph Null")