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# to output to tikz
# default output canvas size: 12.5cm x 8.75cm
set term lua tikz standalone
# parameter: k
k=2
# ranges
set xrange[0:1]
set yrange [:1./k]
# label x axis
set xlabel "$\\alpha$"
set xtics 0,0.25
set xtics nomirror
# no y axis
unset ytics
set ylabel "density"
# no keu
set key off
# label phases
set object 1 circle at 0.15,0.18 size 0.03
set label "$I$" at 0.15,0.18 center
set object 2 circle at 0.15,0.31 size 0.03
set label "$N_+$" at 0.15,0.31 center
set object 3 circle at 0.83,0.21 size 0.03
set label "$N_-$" at 0.83,0.21 center
set object 4 circle at 0.50,0.30 size 0.03
set label "$N_b$" at 0.50,0.30 center
set object 5 circle at 0.50,0.21 size 0.03
set label "?" at 0.50,0.21 center
# set linestyle 1
set style line 1 linetype rgbcolor "#000000" linewidth 2
plot \
k**(-1-x) with filledcurves above x2 fillcolor rgbcolor "#999999", \
k**(-1-x) with lines linestyle 1, \
k**(-2-x) with lines linestyle 1, \
k**(-2) with lines linestyle 1, \
k**(-1-2*x) with lines linestyle 1
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