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diff --git a/src/CuTNetLib/cuSharedLinearity.h b/src/CuTNetLib/cuSharedLinearity.h
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+#ifndef _CUSHARED_LINEARITY_H_
+#define _CUSHARED_LINEARITY_H_
+
+
+#include "cuComponent.h"
+#include "cumatrix.h"
+
+
+#include "Matrix.h"
+#include "Vector.h"
+
+
+namespace TNet {
+  
+  /**
+   * \brief CuSharedLinearity summation function
+   *
+   * \ingroup CuNNUpdatable
+   * Weights and bias are shared between output,
+   *  which means the interconnections are segmented.
+   *  every time the outputs (blocks) are generated individually, and bias is expanded to speed up?
+   *  \sa CuBiasedLinearity
+   */
+  class CuSharedLinearity : public CuUpdatableComponent
+  {
+    public:
+
+      CuSharedLinearity(size_t nInputs, size_t nOutputs, CuComponent *pPred); 
+      ~CuSharedLinearity();  
+      
+      ComponentType GetType() const;
+      const char* GetName() const;
+
+      void PropagateFnc(const CuMatrix<BaseFloat>& X, CuMatrix<BaseFloat>& Y);
+      void BackpropagateFnc(const CuMatrix<BaseFloat>& X, CuMatrix<BaseFloat>& Y);
+
+      void Update();
+
+      void ReadFromStream(std::istream& rIn);
+      void WriteToStream(std::ostream& rOut);
+
+    protected:
+      CuMatrix<BaseFloat> mLinearity;  ///< Matrix with neuron weights
+      CuVector<BaseFloat> mBias;       ///< Vector with biases
+
+      CuMatrix<BaseFloat> mLinearityCorrection; ///< Matrix for linearity updates
+      CuVector<BaseFloat> mBiasCorrection;      ///< Vector for bias updates
+
+      int mNInstances;                          ///< Number of times the bias and weights are shared
+      CuVector<BaseFloat> mBiasExpand;          ///< Bias expanded by mNInstances times
+      CuVector<BaseFloat> mBiasCorrectionExpand;///< Bias correction for the expanded bias vector
+
+  };
+
+
+
+
+  ////////////////////////////////////////////////////////////////////////////
+  // INLINE FUNCTIONS 
+  // CuSharedLinearity::
+  inline 
+  CuSharedLinearity::
+  CuSharedLinearity(size_t nInputs, size_t nOutputs, CuComponent *pPred)
+    : CuUpdatableComponent(nInputs, nOutputs, pPred), 
+      mNInstances(0)
+  { }
+
+
+  inline
+  CuSharedLinearity::
+  ~CuSharedLinearity()
+  { }
+
+  inline CuComponent::ComponentType
+  CuSharedLinearity::
+  GetType() const
+  {
+    return CuComponent::SHARED_LINEARITY;
+  }
+
+  inline const char*
+  CuSharedLinearity::
+  GetName() const
+  {
+    return "<sharedlinearity>";
+  }
+
+
+
+} //namespace
+
+
+
+#endif