Vision: Counting (adding and subtracting, etc.) numbers: can you really afford to have others living at your expense? Solving a mathematical problem is a warning about your spending habits, because you need to find a way out of a difficult situation—and soon!
Depth Psychology: Doing calculations: you can solve your problem if you start using your head.
A slide rule is a sign that you have made a mistake and are looking for help. Sometimes very manipulative people dream about slide rules.... Dreamers Dictionary
Person of authority. You desire authority that you either do not have or that you have, but are not using. Consciousness is always demanded when the image of the dictator / ruler appears in the dream. And this awareness involves the ability for self-determination and self-control (you are the ruler of your own life). See King / Queen.
Like Chief, only stronger and more aggressive. Fear of the Other. Are you craving admiration? Compare with Admiral.... Little Giant Encyclopedia
When two separate things with opposing interpretations are seen in a dream then the stronger or better of the two interpretations will be given. As an example is a person sees a bathroom and himself as removing hair using a lotion or lime-whereas a bathroom represents grief and sorrow and removing hair using a lotion or lime represents the removing of grief and sorrow- it means that his grief and sorrow will be removed, for the dream of removing hair using lime or lotion is regarded as stronger or better.... Islamic Dream Interpretation
Depth Psychology: Dreaming about rules and regulations: your unconscious wants to give you advice. Can you “read” the regulations? What are they telling you? Check past experiences and what they taught you!... Dreamers Dictionary
Here lies the tension between habitual and pioneering thinking. Are you making up your own rules? Or are you following the rules others have made? Do you follow them or break them?... Little Giant Encyclopedia
To see a ruler in your dream, suggests you are worried about not measuring up to the standards of others. It may also mean that you need to be careful in making a decision or judgment.... My Dream Interpretation
When injustice is practiced by a ruler in a dream, it means the opposite. In fact, seeing an unjust ruler in a dream could signify comfort, peace, safety, tranquility, protection of the society, or urban developments. (Also see Injustice; Justice)... Islamic Dream Interpretation