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  2. Natural deduction - Wikipedia

    en.wikipedia.org/wiki/Natural_deduction

    In natural deduction the flow of information is bi-directional: elimination rules flow information downwards by deconstruction, and introduction rules flow information upwards by assembly. Thus, a natural deduction proof does not have a purely bottom-up or top-down reading, making it unsuitable for automation in proof search.

  3. I’m an Accountant: 4 Deductions Most People Forget ... - AOL

    www.aol.com/finance/m-accountant-4-deductions...

    Kevin Quinn, estate planning attorney at Legacy Counsellors, PC, said another healthcare-related deduction is the cost of uninsured long-term care for seniors. “Home health or nursing home care ...

  4. What Is Depreciation? Importance and Calculation Methods ...

    www.aol.com/finance/depreciation-importance...

    The most common tax depreciation method used in the U.S. is the Modified Accelerated Cost Recovery System or MACRS. This accelerates depreciation and provides greater deductions in the early years.

  5. Oil depletion allowance - Wikipedia

    en.wikipedia.org/wiki/Oil_depletion_allowance

    The oil depletion allowance in American (US) tax law is a tax break claimable by anyone with an economic interest in a mineral deposit or standing timber. [citation needed] The principle is that the asset is a capital investment that is a wasting asset, and therefore depreciation can reasonably be offset (effectively as a capital loss) against income.

  6. J. Lee Nicholson - Wikipedia

    en.wikipedia.org/wiki/J._Lee_Nicholson

    Prime-cost method : the most simple method, which divides the total overhead expenses by the total material and labor costs, resulting in a decimal figure which is the rate to be used. Productive-labor-cost method : based upon the principle that indirect expenses are incurred in proportion to the cost of the labor involved. To operate the plan ...

  7. Depletion (accounting) - Wikipedia

    en.wikipedia.org/wiki/Depletion_(accounting)

    Depletion is the using up of natural resources by mining, quarrying, drilling, or felling. According to the IRS Newswire, [2] over 50 percent of oil and gas extraction businesses use cost depletion to figure their depletion deduction. Mineral property includes oil and gas wells, mines, and other natural resource deposits (including geothermal ...

  8. Propositional calculus - Wikipedia

    en.wikipedia.org/wiki/Propositional_calculus

    Natural deduction is a syntactic method of proof that emphasizes the derivation of conclusions from premises through the use of intuitive rules reflecting ordinary reasoning. [99] Each rule reflects a particular logical connective and shows how it can be introduced or eliminated. [99] See § Syntactic proof via natural deduction.

  9. First-order logic - Wikipedia

    en.wikipedia.org/wiki/First-order_logic

    There are many such systems for first-order logic, including Hilbert-style deductive systems, natural deduction, the sequent calculus, the tableaux method, and resolution. These share the common property that a deduction is a finite syntactic object; the format of this object, and the way it is constructed, vary widely.