natural logarithm

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natural logarithm

a logarithm to the base e (see e (sense 1)). Usually written loge or ln

Natural Logarithm

 

a logarithm whose base is the number e = 2.71828 .... The first tables of natural logarithms of numbers from 1 to 1,000 were published by the British mathematician J. Speidell in New Logarithmes (1619). The name “natural logarithm” is due to the German scientist N. Mercator (1668). The natural logarithm of the number N is denoted by In N.

natural logarithm

[′nach·rəl ′läg·ə‚rith·əm]
(mathematics)
References in periodicals archive ?
Considering the aforementioned exclusion, correlations between variables transformed to natural logarithm showed that the largest correlation coefficient of LN_TBCOEF10 was with LN_PEROOM (0.
For these models we removed the CPI variable from our base estimations and replaced it with the natural logarithm of the food price index and the core price index mentioned in the previous section.
All explanatory variables except initial income are country averages for the 1980-2000 period; all are entered as natural logarithms.
Proportional 95% upper and lower bounds for variance components as a function of the variance of natural logarithms of the component.
Mathematical operations involving natural logarithms are the same as shown in Table 1-4.
The mean gonad weight at a constant carapace width for each sex in each month in each water body was determined by using analysis of covariance (ANCOVA) of the natural logarithm of the gonad weight as the dependent variable, month as a fixed factor, and the natural logarithm of the carapace width as a covariate.
Finally, we ran a regression of the rate of change of the natural logarithm of the inflation-adjusted average hourly earnings (i.
The standard ma th functions include power, square root, square, natural logarithms and exponential, fractional, integer, reciprocal, factorial, and rounding.
I also took the natural logarithms of the control variables (discussed below).
From 1938 to 1946, 37 volumes of the NBS Math Tables Series were issued, containing tables of trigonometric functions, the exponential function, natural logarithms, probability functions, and related interpolation formulae (23).
All variables are converted into natural logarithms, and their first differences are taken.