Fix exponent "^-1" -> "^{-1}" in fit-valley.asy

diff --git a/tex/src/figures/fit-space/fit-valley.asy b/tex/src/figures/fit-space/fit-valley.asy
index fb5748ca278b14223e51e8ddfb98a7dba1606de0..9e6e3a29687b8d947edc28b8ba132c95098a1308 100644 (file)
--- a/tex/src/figures/fit-space/fit-valley.asy
+++ b/tex/src/figures/fit-space/fit-valley.asy
@@ -12,7 +12,7 @@ xlimits(0.002,0.26383);
 ylimits(0.12,0.198077);
 
 label(sLabel("Fit quality"), point(N),N);
-xaxis(sLabel("$k_{uo}$ (s$^-1$)"),BottomTop,LeftTicks);
+xaxis(sLabel("$k_{uo}$ (s$^{-1}$)"),BottomTop,LeftTicks);
 yaxis(sLabel("$x_u$ (nm)"),LeftRight,RightTicks);
 
 add(legend(),point(E),20E,UnFill);