different between deduction vs valuation

English

Etymology

From Middle French déduction, from Latin deductio

Pronunciation

• (UK) IPA^(key): /d??d?k??n/, /d??d?k??n/
• (US) IPA^(key): /d??d?k??n/
• Rhymes: -?k??n

Noun

deduction (countable and uncountable, plural deductions)

1. That which is deducted; that which is subtracted or removed
2. A sum that can be removed from tax calculations; something that is written off

   You might want to donate the old junk and just take the deduction.

3. (logic) A process of reasoning that moves from the general to the specific, in which a conclusion follows necessarily from the premises presented, so that the conclusion cannot be false if the premises are true.

   Antonym: induction

4. A conclusion; that which is deduced, concluded or figured out

   He arrived at the deduction that the butler didn't do it.

5. The ability or skill to deduce or figure out; the power of reason

   Through his powers of deduction, he realized that the plan would never work.

Synonyms

• (that which is subtracted or removed): extract, reduction; See also Thesaurus:decrement

Translations

English

Etymology

Middle French valuation, noun of action from valuer, from Old French valoir.

Pronunciation

• IPA^(key): /?væ.lju??e?.??n/

Noun

valuation (countable and uncountable, plural valuations)

1. An estimation of something's worth.
2. (finance, insurance) The process of estimating the value of a financial asset or liability.
   • 1993, Historic American Building Survey, Town of Clayburg: Refractories Company Town, National Park Service, page 4:

     The tax assessor put them in fourteen valuation groups ranging from one two-story brick house and two one-and-a-half-story houses to the largest groups of eighteen two-story houses and twenty-four one-story bungalows.

3. (logic, propositional logic, model theory) An assignment of truth values to propositional variables, with a corresponding assignment of truth values to all propositional formulas with those variables (obtained through the recursive application of truth-valued functions corresponding to the logical connectives making up those formulas).
4. (logic, first-order logic, model theory) A structure, and the corresponding assignment of a truth value to each sentence in the language for that structure.
5. (algebra) A measure of size or multiplicity.
6. (measure theory, domain theory) A map from the class of open sets of a topological space to the set of positive real numbers including infinity.

Related terms

• evaluation
• revaluation
• transvaluation

Translations

See also

• (logic): interpretation