--- /home/adityam/Software/context-pkgbuild/src/tex/texmf-context/tex/context/base/math-map.lua	2011-09-14 06:34:53.000000000 -0400
+++ /opt/context-minimals/texmf-context/tex/context/base/math-map.lua	2012-02-04 16:13:16.000000000 -0500
@@ -128,7 +128,7 @@
         [0x03F4]=0x03F4, [0x03F5]=0x03F5,
     },
     symbols   = {
-        [0x2202]=0x2202, [0x2207]=0x2207,
+        [0x002d]=0x2212, [0x2202]=0x2202, [0x2207]=0x2207, 
     },
 }
 
@@ -160,7 +160,7 @@
         [0x03F4]=0x1D6F3, [0x03F5]=0x1D716,
     },
     symbols   = {
-        [0x2202]=0x1D715, [0x2207]=0x1D6FB,
+        [0x002d]=0x2212, [0x2202]=0x1D715, [0x2207]=0x1D6FB,
     },
 }
 
@@ -185,7 +185,7 @@
         [0x03F4]=0x1D6B9, [0x03F5]=0x1D6DC,
     },
     symbols   = {
-        [0x2202]=0x1D6DB, [0x2207]=0x1D6C1,
+        [0x002d]=0x2212, [0x2202]=0x1D6DB, [0x2207]=0x1D6C1,
     },
 }
 
@@ -210,7 +210,7 @@
         [0x03F4]=0x1D72D, [0x03F5]=0x1D750,
     },
     symbols   = {
-        [0x2202]=0x1D74F, [0x2207]=0x1D735,
+        [0x002d]=0x2212, [0x2202]=0x1D74F, [0x2207]=0x1D735,
     },
 }