MathGroup Archive 2012

[Date Index] [Thread Index] [Author Index]

Search the Archive

How to simplify certain covariance expressions using


  I have a certain case of covariance to simplify. 

Suppose I have the following expression:

How can I assume that whenever ex times ey ,the product is 0, so that the expression I want to get out of is

So that the last term:exey, drops out. 

My problem is that the Assuming[] function won't take exey=0 as a valid assumption. Is there any way to do this using some other function or I typed something wrong?

  • Prev by Date: Re: A new FrontEnd
  • Next by Date: Re: A new FrontEnd
  • Previous by thread: Re: VertexLabeling in GraphPlot
  • Next by thread: DiagramPlot and PlanarGraphPlot colors