Deduction

Deduction can mean:

• Deductive reasoning, inference in which the conclusion is of no greater generality than the premises
• Natural deduction, an approach to proof theory that attempts to provide a formal model of logical reasoning as it "naturally" occurs
• Thinking from general rules to particular events. The general rule is one; the particular events are many. If one knows the general rule, it is easy to think of particular events. Example: general rule, "Where there is smoke, there is fire." Particular events: a barbecue, cigarette smoking, a forest fire. Also and most basic, if one sees smoke one will think fire.

Relating to taxation:

• Itemized deductions
• Standard deduction

Other pages

• Logic
• Venn diagram
• Inductive reasoning
• Syllogism