deletions | additions       diff --git a/Introduction.tex b/Introduction.tex  index 44ec314..0fd03cc 100644  --- a/Introduction.tex  +++ b/Introduction.tex 
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It would be nice if the fields were still independant entities such that \begin{equation}  [r_k,r_l]=f(n)\delta_kl [r_k,r_l]=f(n)\delta_{kl}  \\ [s_k,s_l]=f(n)\delta_kl [s_k,s_l]=f(n)\delta_{kl}  \\ [r^+_k,r^+_l]=f(n)\delta_kl [r^+_k,r^+_l]=f(n)\delta_{kl}  \\ [s^+_k,s^+_l]=f(n)\delta_kl [s^+_k,s^+_l]=f(n)\delta_{kl}  \end{equation}  where $f(n)$ is some relationship between the |n> state the cummutator is applied to. It would be nicer still if f(n) was a constant, however this does not appear to be true.