Natural logarithm

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Natural logarithm

Logarithm to the base e (approximately 2.7183).

Natural Log

In mathematics, the exponent to which one must raise the number e (a mathematical constant approximately equal to 2.718) to produce a given number. The natural log has a number of applications across mathematics, including in compound interest.
References in periodicals archive ?
In this study, changes of the logarithms in popularity in three different online media are regressed against different performance and control variables to answer the first research question.
of pseudo-singletons, that we introduced in [Lab90] as the analytical logarithm of the species, E, of finite sets.
TA Total assets (Compustat #6); Log(TA) denotes the natural logarithm of TA.
We will mention now some of cryptosystem which are based on the discrete logarithm problem as elgamal cryptosystem, and diffie-hellman key exchange, and we will use the multiplication [[].
t] (natural logarithm of the value of steel shipments plus net imports at time t) represents demand that is endogenous in the model above since price is a function of both demand and supply.
Figure 2 was obtained by (i) first applying a lowess smooth function (9) to the observed case counts, (ii) applying least squares linear fit of the logarithm of the smoothed case counts against time, and (iii) transforming the fitted line back to the original scale.
In Equation 2 the variable Y is a response or health effect (such as the logarithm of mortality) that depends directly on Z as well as indirectly on Z, acting through X as a surrogate or proxy.
To test Piven and Cloward's thesis I estimated a time series regression model of the natural logarithm of monthly earnings (measured in current dollars) on the natural logarithm of monthly welfare benefits (measured in current dollars).
For each band, the sound pressure is represented by the sound pressure level which is proportional to the logarithm average squared pressure.
Electromotive-force measurements of cells containing hydrochloric acid and Holmium chloride at constant total molality have been used to determine the variation of the logarithm of the activity coefficient of hydrochloric acid with change in the amount of Holmium chloride in the solution.
The ordinary least squares procedures are employed to estimate a land valuation model where the logarithm of the price per acre is the dependent variable.