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from pseudowalls import *
def plot():
plot_range = 4
v = Chern_Char(2,0,-1,1/2)
lam = stability.Lambda(s=1/3)
Theta = lam.rank(v)
Gamma = lam.degree(v)
mu = stability.Mumford().slope(v)
p = (
implicit_plot(Theta, (lam.beta, -plot_range,plot_range), (lam.alpha, 0, plot_range))
+ implicit_plot(Gamma, (lam.beta, -plot_range,plot_range), (lam.alpha, 0, plot_range), rgbcolor="green")
+ line([(mu,0),(mu,plot_range)], rgbcolor = "red")
+ text(r"$\beta=\mu$", (mu, -0.5), fontsize="x-large", rgbcolor="red")
+ text(r"$\nu = 0$", (mu+1, -0.5), fontsize="x-large", rgbcolor="blue")
+ text(r"$\lambda = 0$", (mu-1.5, -0.5), fontsize="x-large", rgbcolor="green")
)
p.tick_label_color("white")
p.ymin(0)
p
return p