Revision history [back]

Maybe something like

var('sigma,t')
c=0.3
region_plot((1-sigma)-c/log(2+abs(t))<= 0, (sigma, -1, 1), (t, -2, 2),aspect_ratio=1)

will do the trick. Notice that I have changed the argument of the log a bit to make it non-negative. The form of the Hadamard-dVP region you have stated is only nontrivial for t sufficiently large anyway.

Maybe something like

var('sigma,t')
c=0.3
region_plot((1-sigma)-c/log(2+abs(t))<= 0, (sigma, -1, 1), (t, -2, 2),aspect_ratio=1)

will do the trick. Notice that I have changed the argument of the log a bit to make it non-negative. The form of the Hadamard-dVP region you have stated is only nontrivial for t $t$ sufficiently large anyway. anyway.

Maybe something like

var('sigma,t')
c=0.3
region_plot((1-sigma)-c/log(2+abs(t))<= 0, (sigma, -1, 1), (t, -2, 2),aspect_ratio=1)
2))

will do the trick. Notice that I have changed the argument of the log a bit to make it non-negative. The form of the Hadamard-dVP region you have stated is only nontrivial for $t$ sufficiently large anyway.

Maybe something like

var('sigma,t')
c=0.3
region_plot((1-sigma)-c/log(2+abs(t))<= 0, (sigma, -1, 0, 1), (t, -2, 2))

will do the trick. Notice that I have changed the argument of the log a bit to make it non-negative. The form of the Hadamard-dVP region you have stated is only nontrivial for $t$ sufficiently large anyway.

region_plot((1-sigma)-c/log(2+abs(t))<= 0, (sigma, 0, 1), (t, -2, 2))+region_plot((sigma)-c/log(2+abs(t))<= 0, (sigma, 0, 1), (t, -2, 2))

Maybe something like

var('sigma,t')
c=0.3
region_plot((1-sigma)-c/log(2+abs(t))<= 0, (sigma, 0, 1), (t, -2, 2))

will do the trick. Notice that I have changed the argument of the log a bit to make it non-negative. The form of the Hadamard-dVP region you have stated is only nontrivial for $t$ sufficiently large anyway.

If you want to the symmetric version you may try

region_plot((1-sigma)-c/log(2+abs(t))<= 0, (sigma, 0, 1), (t, -2, 2))+region_plot((sigma)-c/log(2+abs(t))<= 0, (sigma, 0, 1), (t, -2, 2))

Maybe something like

var('sigma,t')
c=0.3
region_plot((1-sigma)-c/log(2+abs(t))<= 0, (sigma, 0, 1), (t, -2, 2))

will do the trick. Notice that I have changed the argument of the log a bit to make it non-negative. The form of the Hadamard-dVP region you have stated is only nontrivial for $t$ $\lvert t \rvert$ sufficiently large anyway.

If you want the symmetric version you may try

region_plot((1-sigma)-c/log(2+abs(t))<= 0, (sigma, 0, 1), (t, -2, 2))+region_plot((sigma)-c/log(2+abs(t))<= 0, (sigma, 0, 1), (t, -2, 2))

Maybe something like

var('sigma,t')
c=0.3
region_plot((1-sigma)-c/log(2+abs(t))<= 0, (sigma, 0, 1), (t, -2, 2))
-100, 100),aspect_ratio=1/99)

will do the trick. Notice that I have changed the argument of the log a bit to make it non-negative. The form of the Hadamard-dVP region you have stated is only nontrivial for $\lvert t \rvert$ sufficiently large anyway.

If you want the symmetric version you may try

region_plot((1-sigma)-c/log(2+abs(t))<= 0, (sigma, 0, 1), (t, -2, 2))+region_plot((sigma)-c/log(2+abs(t))<= -100, 100),aspect_ratio=1/99)+region_plot((sigma)-c/log(2+abs(t))<= 0, (sigma, 0, 1), (t, -2, 2))
-100, 100),aspect_ratio=1/99)