# mathnet-numerics | Math.NET Numerics - Math | Math library

## kandi X-RAY | mathnet-numerics Summary

## kandi X-RAY | mathnet-numerics Summary

Math.NET Numerics is an opensource numerical library for .NET, Silverlight and Mono. Math.NET Numerics is the numerical foundation of the Math.NET initiative, aiming to provide methods and algorithms for numerical computations in science, engineering and every day use. Covered topics include special functions, linear algebra, probability models, random numbers, statistics, interpolation, integration, regression, curve fitting, integral transforms (FFT) and more. In addition to the core .NET package (which is written entirely in C#), Numerics specifically supports F# with idiomatic extension modules and maintains mathematical data structures like BigRational that originated in the F# PowerPack. If a performance boost is needed, the managed-code provider backing its linear algebra routines and decompositions can be exchanged with wrappers for optimized native implementations such as Intel MKL.

### Support

### Quality

### Security

### License

### Reuse

### Top functions reviewed by kandi - BETA

Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of mathnet-numerics

## mathnet-numerics Key Features

## mathnet-numerics Examples and Code Snippets

## Community Discussions

Trending Discussions on mathnet-numerics

QUESTION

**Background**

Let's think, there is a list of values which presents activity of a person for several hours. That person did not have any movement in those hours. Therefore, all the values are 0.

**What did raise the question?**

Searching on Google, I found the following formula of skewness. The same formula is available in some other sites also. In the denominator part, Standard Deviation (SD) is included. For a list of similar non-zero values (e.g., [1, 1, 1]) and also for 0 values (i.e., [0, 0, 0]), the SD will be 0. Therefore, I am supposed to get `NaN`

(something divided by 0) for skewness. Surprisingly, I get 0 while calling `pandas.DataFrame.skew()`

.

**My Question**

Why does `pandas.DataFrame.skew()`

return 0 when the SD of a list of values is 0?

**Minimum Reproducible Example**

ANSWER

Answered 2022-Jan-14 at 09:19You can find the implementation here: https://github.com/pandas-dev/pandas/blob/main/pandas/core/nanops.py

As you can see there is a:

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

## Vulnerabilities

No vulnerabilities reported

## Install mathnet-numerics

MathNet.Numerics

MathNet.Numerics.FSharp - optional extensions for a better F# experience. BigRational.

MathNet.Numerics.Providers.MKL - Binding to Native Intel MKL provider.

MathNet.Numerics.MKL.Win - Native Intel MKL provider (Windows).

MathNet.Numerics.MKL.Win-x86 - Native Intel MKL provider (Windows/32-bit only).

MathNet.Numerics.MKL.Win-x64 - Native Intel MKL provider (Windows/64-bit only).

MathNet.Numerics.Data.Text - Text-based matrix formats like CSV and MatrixMarket.

MathNet.Numerics.Data.Matlab - MATLAB Level-5 matrix file format.

## Support

## Reuse Trending Solutions

Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items

Find more librariesStay Updated

Subscribe to our newsletter for trending solutions and developer bootcamps

Share this Page