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Re: infinite square lattice of resistors

At 20:10 -0700 10/11/99, David Bowman wrote:
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R_eff = r*dble_int{dx*dy*(1 - cos(m*x + n*y))/(2 - cos(x) - cos(y))}/[pi]^2
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Is the above sketch sufficient?

It probably is for someone cleverer than I, but I've never seen this one.
Is it written up in more verbose (or algebrose) fashion somewhere? I'll
never get another chance to teach it, but I'd like to know it anyway.

Thanks,

Leigh