math.matrices: Add m+n, m-n, n+m, n-m, words.

diff --git a/basis/math/matrices/matrices.factor b/basis/math/matrices/matrices.factor
index bf9aba23a041a32de25f530f99c4d9f51370842d..efeb0ef6e0baaf018073c3b5e78be41fac1e6380 100644 (file)
--- a/basis/math/matrices/matrices.factor
+++ b/basis/math/matrices/matrices.factor
@@ -118,6 +118,10 @@ IN: math.matrices
 ! Matrix operations
 : mneg ( m -- m ) [ vneg ] map ;
 
+: n+m  ( n m -- m ) [ n+v ] with map ;
+: m+n  ( m n -- m ) [ v+n ] curry map ;
+: n-m  ( n m -- m ) [ n-v ] with map ;
+: m-n  ( m n -- m ) [ v-n ] curry map ;
 : n*m ( n m -- m ) [ n*v ] with map ;
 : m*n ( m n -- m ) [ v*n ] curry map ;
 : n/m ( n m -- m ) [ n/v ] with map ;