In class I sometimes need to use matrices of eigenvalues and eigenvectors, but the output of **eigenvectors()** isn’t particular helpful for that out of the box. 64 more words

## Tags » Eigenvalues

#### Extracting Matrices from the Output of eigenvectors()

#### A Spectral Analysis of Moore Graphs

For fixed integers , and odd , a *Moore graph* is an -regular graph of girth which has the minimum number of vertices among all such graphs with the same regularity and girth. 600 more words

#### The End 2016 Mathematics A To Z: Algebra

So let me start the End 2016 Mathematics A To Z with a word everybody figures they know. As will happen, everybody’s right and everybody’s wrong about that. 912 more words

#### Perth, week 4

And now the time in Adelaide and Perth is over. We are back in London, having arrived on the same day as we left Australia. This was the first time I have done this, and I really don’t recommend it. 540 more words