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modfun
on 13 Oct 2022
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axis([-1 1 -1 1])
axis square
axis off
hold on
m = 102;
n = 500;
z = exp(2i*pi*(0:n)/n);
for j = 0:n
plot([z(mod(j,n)+1) z(mod(j*m,n)+1)],'k')
end