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|The Simple English Wiktionary has a definition for: 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
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