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Variational/indicial notation questionby inprincipio
Tags: notation 
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#1
Mar1713, 08:32 AM

P: 1

Dear All,
Not sure I'm posting in the correct subforum here, but I'm wondering if anyone can help me understand how to expand the following: δu_{i,j}(δ_{im}+u_{i,m}) I can't quite get to grips with the indicial notation in the example, the δu_{i,j} is the variation of u (displacement in this example) and the δ_{im} is the kronecker delta.. I just want to expand the brackets, can anyone offer any advice on how to do this. Many thanks 


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