diff --git a/src/mat.rs b/src/mat.rs
index b1d00ac..8208421 100644
--- a/src/mat.rs
+++ b/src/mat.rs
@@ -32,7 +32,7 @@ pub trait Matrix<T,V>: Dimensional<V>, ToPtr<T>, Eq, DefaultEq, Neg<self> {
     pure fn mul_m(&self, other: &self) -> self;
     pure fn dot(&self, other: &self) -> T;
     
-    pure fn det(&self) -> T;
+    pure fn determinant(&self) -> T;
     pure fn trace(&self) -> T;
     
     pure fn invert(&self) -> Option<self>;
@@ -168,7 +168,7 @@ pub impl<T:Copy Num NumCast DefaultEq> Mat2<T>: Matrix<T, Vec2<T>> {
         other.transpose().mul_m(self).trace()
     }
     
-    pure fn det(&self) -> T {
+    pure fn determinant(&self) -> T {
        self[0][0] * self[1][1] - self[1][0] * self[0][1]
     }
 
@@ -179,7 +179,7 @@ pub impl<T:Copy Num NumCast DefaultEq> Mat2<T>: Matrix<T, Vec2<T>> {
     #[inline(always)]
     pure fn invert(&self) -> Option<Mat2<T>> {
         let _0 = cast(0);
-        let d = self.det();
+        let d = self.determinant();
         if d.default_eq(&_0) {
             None
         } else {
@@ -222,7 +222,7 @@ pub impl<T:Copy Num NumCast DefaultEq> Mat2<T>: Matrix<T, Vec2<T>> {
     #[inline(always)]
     pure fn is_invertible(&self) -> bool {
         let _0 = cast(0);
-        !self.det().default_eq(&_0)
+        !self.determinant().default_eq(&_0)
     }
 }
 
@@ -430,7 +430,7 @@ pub impl<T:Copy Num NumCast DefaultEq> Mat3<T>: Matrix<T, Vec3<T>> {
         other.transpose().mul_m(self).trace()
     }
 
-    pure fn det(&self) -> T {
+    pure fn determinant(&self) -> T {
         self.col(0).dot(&self.col(1).cross(&self.col(2)))
     }
 
@@ -440,7 +440,7 @@ pub impl<T:Copy Num NumCast DefaultEq> Mat3<T>: Matrix<T, Vec3<T>> {
 
     // #[inline(always)]
     pure fn invert(&self) -> Option<Mat3<T>> {
-        let d = self.det();
+        let d = self.determinant();
         let _0 = cast(0);
         if d.default_eq(&_0) {
             None
@@ -499,7 +499,7 @@ pub impl<T:Copy Num NumCast DefaultEq> Mat3<T>: Matrix<T, Vec3<T>> {
     #[inline(always)]
     pure fn is_invertible(&self) -> bool {
         let _0 = cast(0);
-        !self.det().default_eq(&_0)
+        !self.determinant().default_eq(&_0)
     }
 }
 
@@ -776,19 +776,19 @@ pub impl<T:Copy Num NumCast DefaultEq Sign Ord> Mat4<T>: Matrix<T, Vec4<T>> {
         other.transpose().mul_m(self).trace()
     }
 
-    pure fn det(&self) -> T {
+    pure fn determinant(&self) -> T {
         self[0][0]*Mat3::new(self[1][1], self[2][1], self[3][1],
                              self[1][2], self[2][2], self[3][2],
-                             self[1][3], self[2][3], self[3][3]).det() -
+                             self[1][3], self[2][3], self[3][3]).determinant() -
         self[1][0]*Mat3::new(self[0][1], self[2][1], self[3][1],
                              self[0][2], self[2][2], self[3][2],
-                             self[0][3], self[2][3], self[3][3]).det() +
+                             self[0][3], self[2][3], self[3][3]).determinant() +
         self[2][0]*Mat3::new(self[0][1], self[1][1], self[3][1],
                              self[0][2], self[1][2], self[3][2],
-                             self[0][3], self[1][3], self[3][3]).det() -
+                             self[0][3], self[1][3], self[3][3]).determinant() -
         self[3][0]*Mat3::new(self[0][1], self[1][1], self[2][1],
                              self[0][2], self[1][2], self[2][2],
-                             self[0][3], self[1][3], self[2][3]).det()
+                             self[0][3], self[1][3], self[2][3]).determinant()
     }
 
     pure fn trace(&self) -> T {
@@ -796,7 +796,7 @@ pub impl<T:Copy Num NumCast DefaultEq Sign Ord> Mat4<T>: Matrix<T, Vec4<T>> {
     }
 
     pure fn invert(&self) -> Option<Mat4<T>> {
-        let d = self.det();
+        let d = self.determinant();
         let _0 = cast(0);
         if d.default_eq(&_0) {
             None
@@ -914,7 +914,7 @@ pub impl<T:Copy Num NumCast DefaultEq Sign Ord> Mat4<T>: Matrix<T, Vec4<T>> {
     #[inline(always)]
     pure fn is_invertible(&self) -> bool {
         let _0 = cast(0);
-        !self.det().default_eq(&_0)
+        !self.determinant().default_eq(&_0)
     }
 }
 
diff --git a/src/test/test_mat.rs b/src/test/test_mat.rs
index 4d24ff4..c4dfcca 100644
--- a/src/test/test_mat.rs
+++ b/src/test/test_mat.rs
@@ -30,7 +30,7 @@ fn test_Mat2() {
     assert a.col(0) == Vec2::new(1f, 3f);
     assert a.col(1) == Vec2::new(2f, 4f);
 
-    assert a.det() == -2f;
+    assert a.determinant() == -2f;
     assert a.trace() == 5f;
     
     assert a.neg() == Mat2::new(-1f, -3f,
@@ -137,7 +137,7 @@ fn test_Mat3() {
     assert a.col(1) == Vec3::new(2f, 5f, 8f);
     assert a.col(2) == Vec3::new(3f, 6f, 9f);
 
-    assert a.det() == 0f;
+    assert a.determinant() == 0f;
     assert a.trace() == 15f;
     
     assert a.neg() == Mat3::new(-1f, -4f, -7f,
@@ -274,7 +274,7 @@ fn test_Mat4() {
     assert a.col(2) == Vec4::new(3f, 7f, 11f, 15f);
     assert a.col(3) == Vec4::new(4f, 8f, 12f, 16f);
 
-    assert a.det() == 0f;
+    assert a.determinant() == 0f;
     assert a.trace() == 34f;
     
     assert a.neg() == Mat4::new(-1f, -5f,  -9f, -13f,