logarithm

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log·a·rithm

(log'ă-ridhm),
If a number, x, is expressed as a power of another number, y, that is, if x = yn, then n is said to be the logarithm of x to base y. Common logarithms are to the base 10; natural or Napierian logarithms are to the base e, a mathematical constant.
[G. logos, word, ratio, + arithmos, number]
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References in periodicals archive ?
The discrete logarithm of some element g [member of] G, denoted [log.sub.[theta]] g, is the unique integer a; 0 [less than or equal to] a < [absolute value of G], such that g = [[theta].sup.a].
In a sense, Figure 3 represents all that was known about logarithms in 1619.
Calculations with logarithms aren't as important today as they used to be.
The augmented Dickey-Fuller (ADF) test was used to determine the degree of integration for each of the logarithms of the real bilateral exchange rates.
Keuffel based the scales of his first slide rule designs on the table of logarithms. He needed to design a machine with an accurate scale cut on the face of a flat surface.
In addition to 1987-weighted hedonic indexes based on the mean, on the median, and on logarithms, the chart shows two cruder price indexes that are uncorrected for changes in quality.
The first determines mean and standard deviations of the natural logarithm of the data instead of calculating from the raw data.
Consequently, the set of natural frequencies of a chain system of harmonic oscillators corresponds with a set of finite continued fractions F, which are natural logarithms:
114 Exponent and Logarithm Problems: From the AwesomeMath Summer Program
By the time students enter a mathematics course at University, they have likely been exposed to logarithms in Year 10 as an enrichment topic and logarithmic functions in Senior Secondary Mathematics.
became an outstanding goalkeeper for Quiz of the Day NSWERS: 1 Coronation Street; 2 High treason; 3 Three; 4 India; 5 St Mark; 6 Logarithms; 7 Bert Trautmann; 8 Jean-Paul Marat; 9 Nessun Dorma; 10 Five years.
The first part of this text for undergraduates and graduate students describes mathematical methods for problem solving: numbers and indices, proportions, graphs, algebra, logarithms, and simple statistics.