I'm having an exam on graph theory next week and I'm having some problem with understanding the meaning of calculating eigenvalues of adjacency matrices for graphs. My notes suck from the lectures and I'm totally lost...(adsbygoogle = window.adsbygoogle || []).push({});

Our professor asked "What is the sum of elements in row k of the adjacency matrix?" and showed an example where he calculated the eigenvalues of [itex]C_3[/itex] (2, -1, -1) but then my notes stop and and I can't connect the eigenvalues to the question...

Any input on this subject most welcome... Any one know any good resource on the net where I can find more on this??

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Graph Theory

**Physics Forums | Science Articles, Homework Help, Discussion**