On Tuesday, February 3, 2015 at 1:17:15 PM UTC-5, Andrei Berceanu wrote:

> How can I numerically compute the total change in phase as one goes around 
> a closed loop centered on the site $m=n=0$?
>

Seems like

    totalchangeinphase(m,n) = 0

would work and be very efficient.   (As you described your problem, your 
phase sounds like a single-valued function of m & n, hence the total change 
around any closed loop would be zero.  Unless you mean something different 
by "total change"?)

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