### Formulas

Formula for multivariate gaussian distribution

Formula of univariate gaussian distribution

Notes:

- There is normality constant in both equations
- Σ being a positive definite ensure quadratic bowl is downwards… 176 more words

Formula for multivariate gaussian distribution

Formula of univariate gaussian distribution

Notes:

- There is normality constant in both equations
- Σ being a positive definite ensure quadratic bowl is downwards… 176 more words

Most organic chemistry deals with closed shell calculations, but every once in a while you want to calculate carbenes, free radicals or radical transition states coming from a homolytic bond break, which means your structure is now open shell. 440 more words

What is the difference between storage cluster and multi-armed bandit (MAB)? This is not a trick question – to help answer it, think about this one: what’s common between 1,982 more words

Density Functional Theory was proposed in 1970s. The idea behind the Density Functional Theory (DFT) can be understood from a well known and widely popular story of Archimedes. 853 more words

March 14 (or 3/14) is Pi Day. During this somewhat whimsical holiday, science nerds around the globe eat pies and perform needlessly complicated operations to celebrate the fact that the ratio between a circle’s circumference and diameter is 3.14152653… It may be a little confusing from the outside, but that’s sort of the point. 522 more words

**Gaussian Elimination (Row Reduction)**

Gaussian elimination is an algorithm for solving systems of linear equation. It is avaible when the number of equations equals or more than the number of unknowns. 274 more words