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  2. Error function - Wikipedia

    en.wikipedia.org/wiki/Error_function

    Given a complex number z, there is not a unique complex number w satisfying erf w = z, so a true inverse function would be multivalued. However, for −1 < x < 1 , there is a unique real number denoted erf −1 x satisfying erf ⁡ ( erf − 1 ⁡ x ) = x . {\displaystyle \operatorname {erf} \left(\operatorname {erf} ^{-1}x\right)=x.}

  3. Exponential response formula - Wikipedia

    en.wikipedia.org/wiki/Exponential_response_formula

    The ERF method of finding a particular solution of a non-homogeneous differential equation is applicable if the non-homogeneous equation is or could be transformed to form () = + + +; where , are real or complex numbers and () is homogeneous linear differential equation of any order. Then, the exponential response formula can be applied to each ...

  4. Erf (law) - Wikipedia

    en.wikipedia.org/wiki/Erf_(law)

    In real estate, an erf (pl. erven) is the legal term used in Namibia, South Africa and Eswatini to describe a piece of land registered in a deeds registry as an erf, lot, plot or stand. The term is of Afrikaans origin. Section 102 of the South African Deeds Registries Act, 1937 [1] provides the following definition:

  5. Talk:Error function - Wikipedia

    en.wikipedia.org/wiki/Talk:Error_function

    The article claims that erf/erfc exist in GNU libc, but aren't part of any standard. I've come across references that claimed erf/erfc are part of the C99 ISO standard. —Preceding unsigned comment added by 87.174.73.108 23:43, 11 March 2008 (UTC) Yes, indeed they are functions in <math.h> in C99.

  6. ERF - Wikipedia

    en.wikipedia.org/wiki/Erf

    Erf (law), in real estate law Erf (river), in Germany Estuarine Research Federation, an American environmental organization; Erfurt-Weimar Airport, in Germany (IATA code) ...

  7. Emergency Response Guidebook - Wikipedia

    en.wikipedia.org/wiki/Emergency_Response_Guidebook

    The Emergency Response Guidebook: A Guidebook for First Responders During the Initial Phase of a Dangerous Goods/Hazardous Materials Transportation Incident (ERG) is used by emergency response personnel (such as firefighters, paramedics and police officers) in Canada, Mexico, and the United States when responding to a transportation emergency involving hazardous materials.

  8. Assessor's parcel number - Wikipedia

    en.wikipedia.org/wiki/Assessor's_Parcel_Number

    An assessor's parcel number, or APN, is a number assigned to parcels of real property by the tax assessor of a particular jurisdiction for purposes of identification and record-keeping. The assigned number is unique within the particular jurisdiction, and may conform to certain formatting standards that convey basic identifying information such ...

  9. Activation function - Wikipedia

    en.wikipedia.org/wiki/Activation_function

    Logistic activation function. The activation function of a node in an artificial neural network is a function that calculates the output of the node based on its individual inputs and their weights.