| Although this represents a negative number, it is not written with a minus sign. |
| In this case, the plus sign gives an extraneous result, and the minus sign is the one that gives the right conclusion. |
| A minus sign in the notation indicates the line is catalectic, a plus sign indicates a hypermetric line. |
| A plus sign indicates repeat additions and a minus sign indicates repeat deletions, virtually all of which occurred in the variable region. |
| The plus sign denotes amplification and the minus sign indicates no amplification. |
| In this case, the mathematical model has a minus sign, whenever time appears twice. |
