natural logarithm


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natural logarithm

n. Symbol ln
A logarithm in which the base is the irrational number e (= 2.71828 ... ). For example, ln 10 = loge10 = approximately 2.30258. Also called Napierian logarithm.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

natural logarithm

n
(Mathematics) a logarithm to the base e. Usually written loge or ln. Also called: Napierian logarithm Compare e1, common logarithm
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

nat′ural log′arithm


n.
a logarithm having e as a base. Symbol: ln Also called Napierian logarithm. Compare common logarithm.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

natural logarithm

A logarithm whose base is the irrational number e. Natural logarithms are frequently used in calculus. See more at e. Compare common logarithm.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.natural logarithm - a logarithm to the base e
logarithm, log - the exponent required to produce a given number
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
We use GEE models with gamma distribution and natural logarithm link and exchangeable working correlation with variance clustered at VAMC.
When the wet mix elastomer composite is processed with CTV Method 1, the vulcanized wet mix elastomer composite exhibits a resistivity that A) has a natural logarithm satisfying the equation In (resistivity) [greater than or equal to] -0.1 (loading) + x, where x is 14, or B) is at least 2.9 times greater than the resistivity of a vulcanized dry mix elastomer composite having the same composition and prepared using Comparative CTV Method 1.
To develop the present research, we used a more comprehensive sample, with all categories of multimarket funds, and also other measures to estimate the premium lock-up: a dummy variable and the natural logarithm of the lockup period.
In fact, the natural logarithm of the electron-to-proton wavelength ratio is approximately 7.5 and consequently, F calibrated on the proton will be shifted by 7.5 logarithmic units relative to the F calibrated on the electron:
where ln MNF is the natural logarithm of manufacturing value-added as a ratio of GDP which is a proxy for industrial growth in the study.
Following Barcala et al.,12 the PFT values were transformed using natural logarithm due to the fact that these values were non-normally distributed.
[F.sub.ijct] is a set of firm-level control variables that includes the natural logarithm of total permanent employees, age, age squared, and an indicator for whether a firm has foreign ownership.
Our test variables are CEO's risk-increasing incentives proxied by the natural logarithm of CEO's vega (LOGCEOV) and CEO's risk-decreasing incentives proxied by the natural logarithm of CEO's delta (LOGCEOD):
The substitutions [[theta].sub.i, j] = [(i + j).sup.k] and [[theta].sub.i, j] = 1n (i + j) in (1) give general sum-connectivity index [X.sub.k] and natural logarithm of the multiplicative sum Zagreb index [[PI].sup.*.sub.1], respectively, where k is a nonzero real number and ln denotes the natural logarithm.
The advantages pointed out by Keene (1995) must also be considered when using data transformed to natural logarithm compared with untransformed data.