diff --git a/src/lib.rs b/src/lib.rs
index c2a6ac9c..bf12512b 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -115,9 +115,7 @@ pub use traits::{
     Absolute,
     AbsoluteRotate,
     AnyPnt,
-    AnyPntExt,
     AnyVec,
-    AnyVecExt,
     ApproxEq,
     Axpy,
     Basis,
@@ -133,9 +131,7 @@ pub use traits::{
     Dot,
     Eye,
     FloatPnt,
-    FloatPntExt,
     FloatVec,
-    FloatVecExt,
     FromHomogeneous,
     Indexable,
     Inv,
diff --git a/src/traits/mod.rs b/src/traits/mod.rs
index 7d1c53a3..4cd2aa0b 100644
--- a/src/traits/mod.rs
+++ b/src/traits/mod.rs
@@ -4,9 +4,9 @@ pub use self::geometry::{AbsoluteRotate, Cross, CrossMatrix, Dot, FromHomogeneou
                          Rotate, Rotation, RotationMatrix, RotationWithTranslation, ToHomogeneous,
                          Transform, Transformation, Translate, Translation, UniformSphereSample};
 
-pub use self::structure::{FloatVec, FloatVecExt, FloatPnt, FloatPntExt, Basis, Cast, Col, Dim,
-                          Indexable, Iterable, IterableMut, Mat, Row, AnyVec, AnyVecExt, AnyPnt,
-                          AnyPntExt, PntAsVec, VecAsPnt, ColSlice, RowSlice, Diag, Eye};
+pub use self::structure::{FloatVec, FloatPnt, Basis, Cast, Col, Dim, Indexable, Iterable,
+                          IterableMut, Mat, Row, AnyVec, AnyPnt, PntAsVec, VecAsPnt, ColSlice,
+                          RowSlice, Diag, Eye};
 
 pub use self::operations::{Absolute, ApproxEq, Axpy, Cov, Det, Inv, LMul, Mean, Outer, POrd,
                            RMul, ScalarAdd, ScalarSub, ScalarMul, ScalarDiv, Transpose};
diff --git a/src/traits/structure.rs b/src/traits/structure.rs
index 403b2bf2..050bfcae 100644
--- a/src/traits/structure.rs
+++ b/src/traits/structure.rs
@@ -1,9 +1,9 @@
 //! Traits giving structural informations on linear algebra objects or the space they live in.
 
-use std::num::{Zero, Bounded};
+use std::num::Zero;
 use std::slice::{Items, MutItems};
-use traits::operations::{RMul, LMul, ScalarAdd, ScalarSub, Axpy};
-use traits::geometry::{Dot, Norm, UniformSphereSample, Orig};
+use traits::operations::{RMul, LMul, Axpy};
+use traits::geometry::{Dot, Norm, Orig};
 
 /// Traits of objects which can be created from an object of type `T`.
 pub trait Cast<T> {
@@ -164,28 +164,11 @@ pub trait AnyVec<N>: Dim + Sub<Self, Self> + Add<Self, Self> + Neg<Self> + Zero
 pub trait FloatVec<N: Float>: AnyVec<N> + Norm<N> {
 }
 
-/// Trait grouping uncommon, low-level and borderline (from the mathematical point of view)
-/// operations on vectors.
-pub trait AnyVecExt<N>: AnyVec<N> + Indexable<uint, N> + Index<uint, N> + IndexMut<uint, N> +
-                        Iterable<N> + UniformSphereSample + ScalarAdd<N> + ScalarSub<N> + Bounded
-{ }
-
-/// Trait grouping uncommon, low-level and borderline (from the mathematical point of view)
-/// operations on vectors.
-pub trait FloatVecExt<N: Float>: FloatVec<N> + AnyVecExt<N> { }
-
 impl<N, V: Dim + Sub<V, V> + Add<V, V> + Neg<V> + Zero + PartialEq + Mul<N, V> + Div<N, V> + Dot<N> + Axpy<N> + Basis>
 AnyVec<N> for V { }
 
 impl<N: Float, V: AnyVec<N> + Norm<N>> FloatVec<N> for V { }
 
-impl<N,
-     V: AnyVec<N> + Indexable<uint, N> + Index<uint, N> + IndexMut<uint, N> + Iterable<N> +
-        UniformSphereSample + ScalarAdd<N> + ScalarSub<N> + Bounded>
-AnyVecExt<N> for V { }
-
-impl<N: Float, V: FloatVec<N> + AnyVecExt<N>> FloatVecExt<N> for V { }
-
 /*
  * Pnt related traits.
  */
@@ -226,20 +209,6 @@ pub trait FloatPnt<N: Float, V: Norm<N>>: AnyPnt<N, V> {
     }
 }
 
-/// Trait grouping uncommon, low-level and borderline (from the mathematical point of view)
-/// operations on points.
-pub trait AnyPntExt<N, V>: AnyPnt<N, V> + Indexable<uint, N> + Index<uint, N> + IndexMut<uint, N> +
-                           Iterable<N> + ScalarAdd<N> + ScalarSub<N> + Bounded + Axpy<N>
-{ }
-
-/// Trait grouping uncommon, low-level and borderline (from the mathematical point of view)
-/// operations on points.
-pub trait FloatPntExt<N: Float, V: Norm<N>> : FloatPnt<N, V> + AnyPntExt<N, V> { }
-
-
 impl<N, V, P: PntAsVec<V> + Dim + Sub<P, V> + Add<V, P> + Orig + Neg<P> + PartialEq + Mul<N, P> + Div<N, P>>
 AnyPnt<N, V> for P { }
 impl<N: Float, V: Norm<N>, P: AnyPnt<N, V>> FloatPnt<N, V> for P { }
-impl<N, V, P: AnyPnt<N, V> + Indexable<uint, N> + Index<uint, N> + IndexMut<uint, N> + Iterable<N> + ScalarAdd<N> + ScalarSub<N> + Bounded + Axpy<N>>
-AnyPntExt<N, V> for P { }
-impl<N: Float, V: Norm<N>, P: FloatPnt<N, V> + AnyPntExt<N, V>> FloatPntExt<N, V> for P { }