Tensor defenition

[Petr Tretyakov]

Dear All,

I'm the novice user of xAct and many thing are clear, but some is not. Please help me understand it. 

Suppose I would like to define some tensor value, which is some combination of metric (and may be something else). I define Some tensor: DefTensor[R[-i, -k, -l, -m], M4] after that I write R[-i,-k,-l,-m]=f  where f is combination of metric tensors what I need. After that I would like to calculate some complicate product of this tensor R with some another one say h[-i,-k] defined before. Program give me result in the terms of tensor R but not metric.  How I can to see the result in the form of metric? 

I try different possibilities like // Simplification // ToCanonical // ContractMetric // ExpandAll and others -- nothing work. May be there exist some special command or may be I need to introduce my combined tensor R by another way?