how i can write under the x axis

How Can I write the gamma symbol on the x axis as in the attached plot

   clear;
close all;
clc;
dt = 0.0001;
tx = -10:dt:10;
th = 0.1:dt:1;
sigma = 3;
N = 5; % no of observation...
x = (1/sqrt(sigma^2 * 2*pi))^1 * exp(-1 * ((tx+4).^2)/ (2*sigma^2));
y = (1/sqrt(sigma^2 * 2*pi))^1 * exp(-1 * ((tx-4).^2)/ (2*sigma^2));
 plot(tx, x)
hold on
plot(tx,y)
grid on
line([-4 -4],[0 0.133],'Marker','.','LineStyle','-.','LineWidth',1, 'Color',[0 0 0])
line([4 4],[0 0.133],'Marker','.','LineStyle','-.','LineWidth',1, 'Color',[0 0 0])
set(gca,'XTick',[]); 
set(gca,'YTick',[]);
  legend({' $P_0(y)$','$ P_1(y)$'},'Interpreter','latex','Location','northwest')

Answer 1

[Walter Roberson]

xlabel('${\gamma}1$', 'interpreter','latex')

Or in your situation, I would proceed by setting XTick values where the lines go, and then setting XTickLabels to the strings you want.

[Tammun filistin]

But I need it to be put it under the vertical lines because it represent the threshold on that places '${\gamma}0$' and '${\gamma}1$' respectively..

Thank you,

[Walter Roberson]

set(gca, 'XTick', [-4 4], 'XTickLabels', {'${\gamma}0$','${\gamma}1$'}, 'TickLabelInterpreter', 'latex')

[Tammun filistin]

Exactly what ı wanted ...Many thanks