I'm editing a paper and the author (native German) has written several instances of 'where' at the beginning of a sentence as a main clause. He means to explain the symbols in the equation that preceeds the sentence, but his use of 'where' is not appropriate. I can't seem to find a good enough explanation for this mistake. Do you?
Here are two examples:
---Equation XYZ--- Where XYZ is the ratio of cross section between adjacent segments in x-direction p,j and p+1,j.
---Equation XYZ--- Where X is the Modulus of elasticity and Y the cross section area of the segment p,j.