Look up deduction in
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Deduction can refer to one of the following usages:

• 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

Relating to taxation:

• Tax deduction
• Itemized deductions
• Standard deduction

See also

• Logic
• Venn diagram
• Inductive reasoning

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