Or I indicate it by the letters p , q , r .
If I use two signs with one and the same meaning, I express this by putting between them the sign “ = ”.
“ a = b ” means then, that the sign “ a ” is replaceable by the sign “ b ”.
4.241
308
Or I indicate it by the letters p , q , r .
If I use two signs with one and the same meaning, I express this by putting between them the sign “ = ”.
“ a = b ” means then, that the sign “ a ” is replaceable by the sign “ b ”.