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  2. List of logarithmic identities - Wikipedia

    en.wikipedia.org/wiki/List_of_logarithmic_identities

    Logarithms can be used to make calculations easier. For example, two numbers can be multiplied just by using a logarithm table and adding. These are often known as logarithmic properties, which are documented in the table below. [2] The first three operations below assume that x = b c and/or y = b d, so that log b (x) = c and log b (y) = d.

  3. Rewriting - Wikipedia

    en.wikipedia.org/wiki/Rewriting

    A term rewriting given by a set of rules can be viewed as an abstract rewriting system as defined above, with terms as its objects and as its rewrite relation. For example, x ∗ ( y ∗ z ) → ( x ∗ y ) ∗ z {\displaystyle x*(y*z)\rightarrow (x*y)*z} is a rewrite rule, commonly used to establish a normal form with respect to the ...

  4. Elementary algebra - Wikipedia

    en.wikipedia.org/wiki/Elementary_algebra

    Elementary algebraic techniques are used to rewrite a given equation in the above way before arriving at the solution. ... A logarithmic equation is an equation of ...

  5. Change of base - Wikipedia

    en.wikipedia.org/wiki/Change_of_base

    The logarithmic change-of-base formula, one of the logarithmic identities used frequently in algebra and calculus. The method for changing between polynomial and normal bases, and similar transformations, for purposes of coding theory and cryptography. Construction of the fiber product of schemes, in algebraic geometry.

  6. Change of variables - Wikipedia

    en.wikipedia.org/wiki/Change_of_variables

    In mathematics, a change of variables is a basic technique used to simplify problems in which the original variables are replaced with functions of other variables. The intent is that when expressed in new variables, the problem may become simpler, or equivalent to a better understood problem.

  7. Logarithm - Wikipedia

    en.wikipedia.org/wiki/Logarithm

    In mathematics, the logarithm to base b is the inverse function of exponentiation with base b. That means that the logarithm of a number x to the base b is the exponent to which b must be raised to produce x. For example, since 1000 = 10 3, the logarithm base of 1000 is 3, or log 10 (1000) = 3.

  8. Catastrophic cancellation - Wikipedia

    en.wikipedia.org/wiki/Catastrophic_cancellation

    For instance, if =, the true value of ⁡ is approximately , but using the naive logarithmic formula in IEEE 754 binary64 arithmetic may give _, with only five out of sixteen digits correct and the remainder (underlined) all incorrect.

  9. Maude system - Wikipedia

    en.wikipedia.org/wiki/Maude_system

    Maude rewrites terms according to the equations whenever there is a match between the closed terms that one tries to rewrite (or reduce) and the left hand side of an equation in our equation-set. A match in this context is a substitution of the variables in the left hand side of an equation which leaves it identical to the term that one tries ...