diff --git a/lib/function/algebra/solver/lusolve.js b/lib/function/algebra/solver/lusolve.js
index 890ed50b9..adbccc7e6 100644
--- a/lib/function/algebra/solver/lusolve.js
+++ b/lib/function/algebra/solver/lusolve.js
@@ -6,7 +6,6 @@ function factory (type, config, load, typed) {
   
   var matrix = load(require('../../../type/matrix/function/matrix'));
   var lup = load(require('../decomposition/lup'));
-  var multiply = load(require('../../arithmetic/multiply'));
   var cs_ipvec = load(require('../sparse/cs_ipvec'));
 
   var usolve = load(require('./usolve'));
diff --git a/lib/function/algebra/sparse/cs_chol.js b/lib/function/algebra/sparse/cs_chol.js
index b4532fb72..9d1ca56c6 100644
--- a/lib/function/algebra/sparse/cs_chol.js
+++ b/lib/function/algebra/sparse/cs_chol.js
@@ -40,8 +40,6 @@ function factory (type, config, load) {
     var parent = s.parent;
     var cp = s.cp;
     var pinv = s.pinv;
-    // nonzero elements (estimate)
-    var lnz = cp[n];
     // L arrays
     var lvalues = [];
     var lindex = [];
diff --git a/lib/function/algebra/sparse/cs_counts.js b/lib/function/algebra/sparse/cs_counts.js
index 30076f6db..976f76b22 100644
--- a/lib/function/algebra/sparse/cs_counts.js
+++ b/lib/function/algebra/sparse/cs_counts.js
@@ -45,7 +45,7 @@ function factory (type, config, load) {
       w[k] = -1;
     
     // allocate result
-    var colcount = [] // (n);
+    var colcount = []; // (n);
     
     // AT = A'
     var at = transpose(a);
diff --git a/lib/function/algebra/sparse/cs_symperm.js b/lib/function/algebra/sparse/cs_symperm.js
index 86e62f573..a39d27763 100644
--- a/lib/function/algebra/sparse/cs_symperm.js
+++ b/lib/function/algebra/sparse/cs_symperm.js
@@ -29,8 +29,6 @@ function factory (type, config, load) {
     var asize = a._size;
     // columns
     var n = asize[1];
-    // number of nonzero elements in C
-    var nz = aptr[n];
     // C matrix arrays
     var cvalues = values && avalues ? [] : null;
     var cindex = []; // (nz);
diff --git a/lib/function/algebra/util/permute.js b/lib/function/algebra/util/permute.js
new file mode 100644
index 000000000..0dce6a796
--- /dev/null
+++ b/lib/function/algebra/util/permute.js
@@ -0,0 +1,34 @@
+'use strict';
+
+function factory (type, config, load, typed) {
+
+  var matrix = load(require('../../../type/matrix/function/matrix'));
+  var divideScalar = load(require('../../arithmetic/divideScalar'));
+  var multiply = load(require('../../arithmetic/multiply'));
+  var subtract = load(require('../../arithmetic/subtract'));
+  var equalScalar = load(require('../../relational/equalScalar'));
+
+  var substitutionValidation = load(require('./substitutionValidation'));
+
+  var SparseMatrix = type.SparseMatrix;
+  var DenseMatrix = type.DenseMatrix;
+
+  /** 
+   * 
+   */
+  var permute = typed('permute', {
+    
+    'Matrix, Array, Array': function (m, p, q) {
+      
+    },
+
+    'Array, Array | Matrix': function (a, p, q) {
+      
+    }
+  });
+
+  return permute;
+}
+
+exports.name = 'permute';
+exports.factory = factory;
diff --git a/test/function/algebra/sparse/cs_lu.test.js b/test/function/algebra/sparse/cs_lu.test.js
index 2b50c656e..0f927ccd0 100644
--- a/test/function/algebra/sparse/cs_lu.test.js
+++ b/test/function/algebra/sparse/cs_lu.test.js
@@ -3,9 +3,9 @@ var assert = require('assert'),
     math = require('../../../../index'),
     market = require('../../../../tools/matrixmarket');
 
+var cs_permute = math.import(require('../../../../lib/function/algebra/sparse/cs_permute'));
 var cs_lu = math.import(require('../../../../lib/function/algebra/sparse/cs_lu'));
 var cs_sqr = math.import(require('../../../../lib/function/algebra/sparse/cs_sqr'));
-var cs_permute = math.import(require('../../../../lib/function/algebra/sparse/cs_permute'));
 
 describe('cs_lu', function () {