What's New
Upgrade to ios 14, watchOS7
App Description
The Dirichlet series is the alternating sum corresponding to the Dirichlet series expansion of the Riemann zeta function, ζ(s) — and for this reason the Dirichlet eta function is also known as the alternating zeta function, also denoted ζ*(s).
In Mathematics, The Dirchilet Eta function plays an important role in physics, complex analysis, and number theory and have been studied extensively for several centuries.
For the Dirichlet Eta app, the data variables used to calculate the Dirichlet Eta Function are the Random Variable (x), the StepSizd Variable (h) and the Number of Steps.
The Dirichlet Eta app display data for the Dirichlet Eta and Inverse Dirichlet Eta Values and displays two graphs.
The graphs are touch enabled graph. Upon touching the graph a vertical line appears. Move the vertical line to the left or right to display the point (x) and the Dirichlet ETA and Inverse Dirichlet ETA data pairs.
The horizontal x-axis displays x values. The vertical y-axis plots a range of either the Ƞ(x) or 1-Ƞ(x) values
Horizontal Max and Min dashed lines display the Maximum and Minimum values
iPhone Screenshots
(click to enlarge)
iPad Screenshots
(click to enlarge)
App Changes
- May 28, 2016 Initial release
- June 15, 2019 New version 1.1
- January 14, 2020 New version 1.2
- November 12, 2020 New version 1.3
Other Apps From Donald Schaefer
