diff --git a/src/include/multi_array_operation.h b/src/include/multi_array_operation.h
index 521f4e7..ae1f754 100644
--- a/src/include/multi_array_operation.h
+++ b/src/include/multi_array_operation.h
@@ -12,12 +12,9 @@
 #include "base_def.h"
 #include "mbase_def.h"
 
-//#include "block/block.h"
-//#include "operation_utils.h"
 #include "ranges/rheader.h"
 #include "pack_num.h"
 
-#include "ranges/index_info.h"
 #include "arith.h"
 
 namespace MultiArrayTools
@@ -101,11 +98,6 @@ namespace MultiArrayTools
 	OperationMaster(MutableMultiArrayBase<T,Ranges...>& ma, const OpClass& second,
 			IndexType& index);
 
-	OperationMaster(MutableMultiArrayBase<T,Ranges...>& ma, const OpClass& second,
-			//std::shared_ptr<IndexType>& index,
-			IndexType& index,
-			const IndexInfo* blockIndex);
-
 	inline void set(size_t pos, T val) { mDataPtr[pos] = val; }
 	inline void add(size_t pos, T val) { mDataPtr[pos] += val; }
 	inline T get(size_t pos) const;
@@ -117,7 +109,6 @@ namespace MultiArrayTools
 	MutableMultiArrayBase<T,Ranges...>& mArrayRef;
 	T* mDataPtr;
 	IndexType mIndex;
-	//IndexInfo mIInfo;
     };
 
     
@@ -150,9 +141,7 @@ namespace MultiArrayTools
 
 	MultiArrayBase<T,Ranges...> const& mArrayRef;
 	const T* mDataPtr;
-	//std::shared_ptr<IndexType> mIndex;
 	IndexType mIndex;
-	//IndexInfo mIInfo;
     };
     
     template <typename T, class... Ranges>
@@ -187,7 +176,6 @@ namespace MultiArrayTools
 	MutableMultiArrayBase<T,Ranges...>& mArrayRef;
 	T* mDataPtr;
 	IndexType mIndex;
-	//IndexInfo mIInfo;
     };
 
     template <class Op>
@@ -387,17 +375,6 @@ namespace MultiArrayTools
     {
 	performAssignment(0);
     }
-
-    template <typename T, class OpClass, class... Ranges>
-    OperationMaster<T,OpClass,Ranges...>::
-    OperationMaster(MutableMultiArrayBase<T,Ranges...>& ma, const OpClass& second,
-		    IndexType& index,
-		    const IndexInfo* blockIndex) :
-	mSecond(second), mArrayRef(ma), mDataPtr(mArrayRef.data()),
-	mIndex(index)
-    {
-	performAssignment(0);
-    }
     
     template <typename T, class OpClass, class... Ranges>
     void OperationMaster<T,OpClass,Ranges...>::performAssignment(std::intptr_t blockIndexNum)
@@ -424,7 +401,6 @@ namespace MultiArrayTools
     ConstOperationRoot(const MultiArrayBase<T,Ranges...>& ma,
 		       const std::shared_ptr<typename Ranges::IndexType>&... indices) :
 	mArrayRef(ma), mDataPtr(mArrayRef.data()),
-	//mIndex( mkIndex(ma,indices...) ), mIInfo(mIndex)
 	mIndex( ma.begin() )
     {
 	mIndex(indices...);
diff --git a/src/include/ranges/container_range.h b/src/include/ranges/container_range.h
index c8ddef5..a17c4e4 100644
--- a/src/include/ranges/container_range.h
+++ b/src/include/ranges/container_range.h
@@ -93,8 +93,6 @@ namespace MultiArrayTools
 
 	size_t getStepSize(size_t n);
 
-	std::vector<IndexInfo> infoVec() const;
-	
 	std::string id() const;
 	void print(size_t offset);
 	
@@ -389,15 +387,6 @@ namespace MultiArrayTools
 	}
 	return mBlockSizes[n+1];
     }
-
-    template <typename T, class... Indices>
-    std::vector<IndexInfo> ContainerIndex<T,Indices...>::infoVec() const
-    {
-	std::vector<IndexInfo> out;
-	out.reserve(sizeof...(Indices));
-	RPackNum<sizeof...(Indices)-1>::buildInfoVec(out, mIPack, mBlockSizes);
-	return std::move( out );
-    }
     
     template <typename T, class... Indices>
     std::string ContainerIndex<T,Indices...>::id() const
diff --git a/src/include/ranges/index_base.h b/src/include/ranges/index_base.h
index 4642c24..d262306 100644
--- a/src/include/ranges/index_base.h
+++ b/src/include/ranges/index_base.h
@@ -10,7 +10,6 @@
 #include "rbase_def.h"
 #include "range_base.h"
 #include "index_type.h"
-#include "index_info.h"
 
 #include "xfor/xfor.h"
 
@@ -53,8 +52,6 @@ namespace MultiArrayTools
 
 	
 	std::shared_ptr<RangeBase> vrange() const { return mRangePtr; }
-
-	std::vector<IndexInfo> infoVec() const { return THIS().infoVec(); }
 	
 	size_t getStepSize(size_t n) const { return THIS().getStepSize(n); }
 	
@@ -67,8 +64,6 @@ namespace MultiArrayTools
 
 	void print(size_t offset = 0) const { THIS().print(offset); }
 
-	IndexInfo info() const { return IndexInfo(THIS()); }
-	
 	// CHECK / IMPLEMENT !!!!!!
 	template <class Expr>
 	auto ifor(const Expr ex) const -> decltype(THIS().template ifor<Expr>(ex))
diff --git a/src/include/ranges/index_info.h b/src/include/ranges/index_info.h
deleted file mode 100644
index 1623f37..0000000
--- a/src/include/ranges/index_info.h
+++ /dev/null
@@ -1,104 +0,0 @@
-// -*- C++ -*-
-
-#ifndef __index_info_h__
-#define __index_info_h__
-
-#include <cstdlib>
-#include <cstdint>
-#include <vector>
-#include <memory>
-#include "index_type.h"
-
-namespace MultiArrayTools
-{
-    class IndexInfo;
-    
-    class IndexInfo
-    {
-    public:
-
-	IndexInfo(IndexInfo&& in) = default;
-	IndexInfo& operator=(IndexInfo&& in) = default;
-	IndexInfo(const IndexInfo& in) = default;
-	IndexInfo& operator=(const IndexInfo& in) = default;
-	
-	template <class IndexClass>
-	IndexInfo(const IndexClass& ind, size_t stepSize = 1);
-
-	template <class IndexClass>
-	IndexInfo& reassign(const IndexClass& ind, size_t stepSize = 1);
-	
-	bool operator==(const IndexInfo& in) const;
-	bool operator!=(const IndexInfo& in) const;
-
-	bool operator<=(const IndexInfo& in) const;
-	bool operator<(const IndexInfo& in) const;
-	bool operator>(const IndexInfo& in) const;
-	bool operator>=(const IndexInfo& in) const;
-
-	
-	const IndexInfo* getPtr(size_t inum) const;
-	std::intptr_t getPtrNum() const;
-	size_t dim() const;
-	size_t max() const;
-	size_t getStepSize(size_t inum) const;
-	size_t getStepSize() const;
-	IndexType type() const;
-	
-    private:
-
-	IndexInfo() = default;
-	
-	std::vector<IndexInfo> mNext;
-	std::intptr_t mPtrNum;
-	size_t mDim;
-	size_t mMax;
-	size_t mStepSize;
-	IndexType mType;
-    };
-
-    template <class IndexClass>
-    IndexInfo::IndexInfo(const IndexClass& ind, size_t stepSize) :
-	mNext(ind.infoVec()),
-	mPtrNum( reinterpret_cast<std::intptr_t>( &ind ) ),
-	mDim(ind.vrange()->dim()),
-	mMax(ind.max()),
-	mStepSize(stepSize),
-	mType(ind.type())
-    {}
-
-    template <class IndexClass>
-    IndexInfo& IndexInfo::reassign(const IndexClass& ind, size_t stepSize)
-    {
-	IndexInfo ii(ind, stepSize);
-	(*this) = std::move(ii);
-	return *this;
-    }
-
-    std::vector<IndexInfo> getRootIndices(const IndexInfo& info);
-
-    /*
-    inline size_t getStepSize(const IndexInfo& ii, std::intptr_t j)
-    {
-	if(ii.type() == IndexType::SINGLE){
-	    return ii.getPtrNum() == j ? 1 : 0;	    
-	}
-	else {
-	    size_t ss = 0;
-	    size_t sx = 1;
-	    for(size_t i = 0; i != ii.dim(); ++i){
-		const IndexInfo& itmp = *ii.getPtr(ii.dim()-i-1);
-		const size_t max = itmp.max();
-		const size_t tmp = getStepSize(itmp, j);
-		ss += tmp * sx;
-		sx *= max;
-		VCHECK(ss);
-	    }
-	    return ss;
-	}
-    }
-    */
-    //size_t getStepSize(const std::vector<IndexInfo>& iv, std::intptr_t j);
-} // end namespace MultiArrayTools
-
-#endif
diff --git a/src/include/ranges/multi_range.h b/src/include/ranges/multi_range.h
index 8267721..4e8b730 100644
--- a/src/include/ranges/multi_range.h
+++ b/src/include/ranges/multi_range.h
@@ -100,8 +100,6 @@ namespace MultiArrayTools
 
 	size_t getStepSize(size_t n);
 
-	std::vector<IndexInfo> infoVec() const;
-	
 	std::string id() const;
 	void print(size_t offset);
 
@@ -384,15 +382,6 @@ namespace MultiArrayTools
 	}
 	return mBlockSizes[n+1];
     }
-
-    template <class... Indices>
-    std::vector<IndexInfo> MultiIndex<Indices...>::infoVec() const
-    {
-	std::vector<IndexInfo> out;
-	out.reserve(sizeof...(Indices));
-	RPackNum<sizeof...(Indices)-1>::buildInfoVec(out, mIPack, mBlockSizes);
-	return std::move( out );
-    }
     
     template <class... Indices>
     std::string MultiIndex<Indices...>::id() const
diff --git a/src/include/ranges/rpack_num.h b/src/include/ranges/rpack_num.h
index 5df9641..924e1c0 100644
--- a/src/include/ranges/rpack_num.h
+++ b/src/include/ranges/rpack_num.h
@@ -3,7 +3,6 @@
 #define __rpack_num_h__
 
 #include <memory>
-#include "index_info.h"
 
 namespace MultiArrayHelper
 {
@@ -224,16 +223,6 @@ namespace MultiArrayHelper
 	    RPackNum<N-1>::template checkDefaultable<Ranges...>();
 	}
 
-	template <class... Indices>
-	static void buildInfoVec(std::vector<IndexInfo>& out,
-				 const std::tuple<std::shared_ptr<Indices>...>& ip,
-				 const std::array<size_t,sizeof...(Indices)+1>& bs)
-	{
-	    static const size_t POS = sizeof...(Indices)-N-1;
-	    out.emplace_back(*std::get<POS>(ip), std::get<POS>(bs));
-	    RPackNum<N-1>::buildInfoVec(out, ip, bs);
-	}
-
 	template <class IndexPack, class Exprs>
 	static auto mkFor(const IndexPack& ipack, Exprs exs)
 	    -> decltype(std::get<std::tuple_size<IndexPack>::value-N-1>(ipack)
@@ -415,15 +404,6 @@ namespace MultiArrayHelper
 	    static_assert( Range::defaultable, "not defaultable" );
 	}
 
-	template <class... Indices>
-	static void buildInfoVec(std::vector<IndexInfo>& out,
-				 const std::tuple<std::shared_ptr<Indices>...>& ip,
-				 const std::array<size_t,sizeof...(Indices)+1>& bs)
-	{
-	    static const size_t POS = sizeof...(Indices)-1;
-	    out.emplace_back(*std::get<POS>(ip), std::get<POS>(bs));
-	}
-
 	template <class IndexPack, class Exprs>
 	static auto mkFor(const IndexPack& ipack, Exprs exs)
 	    -> decltype(std::get<std::tuple_size<IndexPack>::value-1>(ipack)
diff --git a/src/include/ranges/single_range.h b/src/include/ranges/single_range.h
index f160a5c..75e2b79 100644
--- a/src/include/ranges/single_range.h
+++ b/src/include/ranges/single_range.h
@@ -59,8 +59,6 @@ namespace MultiArrayTools
 	void getPtr();
 
 	size_t getStepSize(size_t n);
-
-	std::vector<IndexInfo> infoVec() const;
 	
 	std::string id() const;
 	void print(size_t offset);
@@ -219,12 +217,6 @@ namespace MultiArrayTools
     template <typename U, SpaceType TYPE>
     template <size_t N>
     void SingleIndex<U,TYPE>::getPtr() {}
-
-    template <typename U, SpaceType TYPE>
-    std::vector<IndexInfo> SingleIndex<U,TYPE>::infoVec() const
-    {
-	return std::move( std::vector<IndexInfo>() );
-    }
     
     template <typename U, SpaceType TYPE>
     size_t SingleIndex<U,TYPE>::getStepSize(size_t n)
diff --git a/src/lib/CMakeLists.txt b/src/lib/CMakeLists.txt
index 3ad9ddb..bffe052 100644
--- a/src/lib/CMakeLists.txt
+++ b/src/lib/CMakeLists.txt
@@ -1,7 +1,6 @@
 
 set(libmultiarray_a_SOURCES
   ${CMAKE_SOURCE_DIR}/src/lib/ranges/range_base.cc
-  ${CMAKE_SOURCE_DIR}/src/lib/ranges/index_info.cc
   ${CMAKE_SOURCE_DIR}/src/lib/ranges/anonymous_range.cc
   )
 
diff --git a/src/lib/ranges/index_info.cc b/src/lib/ranges/index_info.cc
deleted file mode 100644
index f4f6220..0000000
--- a/src/lib/ranges/index_info.cc
+++ /dev/null
@@ -1,110 +0,0 @@
-
-#include "ranges/index_info.h"
-#include "ranges/range_base.h"
-
-namespace MultiArrayTools
-{
-    
-    bool IndexInfo::operator==(const IndexInfo& in) const
-    {
-	return mPtrNum == in.mPtrNum;
-    }
-    
-    bool IndexInfo::operator!=(const IndexInfo& in) const
-    {
-	return mPtrNum != in.mPtrNum;
-    }
-
-    bool IndexInfo::operator<=(const IndexInfo& in) const
-    {
-	return mPtrNum <= in.mPtrNum;
-    }
-
-    bool IndexInfo::operator<(const IndexInfo& in) const
-    {
-	return mPtrNum < in.mPtrNum;
-    }
-
-    bool IndexInfo::operator>(const IndexInfo& in) const
-    {
-	return mPtrNum > in.mPtrNum;
-    }
-
-    bool IndexInfo::operator>=(const IndexInfo& in) const
-    {
-	return mPtrNum >= in.mPtrNum;
-    }
-
-    
-    const IndexInfo* IndexInfo::getPtr(size_t inum) const
-    {
-	return &mNext[inum];
-    }
-    
-    std::intptr_t IndexInfo::getPtrNum() const
-    {
-	return mPtrNum;
-    }
-    
-    size_t IndexInfo::dim() const
-    {
-	return mDim;
-    }
-
-    size_t IndexInfo::max() const
-    {
-	return mMax;
-    }
-    
-    size_t IndexInfo::getStepSize(size_t inum) const
-    {
-	return mNext[inum].getStepSize();
-    }
-    
-    size_t IndexInfo::getStepSize() const
-    {
-	return mStepSize;
-    }
-
-    IndexType IndexInfo::type() const
-    {
-	return mType;
-    }
-
-
-    std::vector<IndexInfo> getRootIndices(const IndexInfo& info)
-    {
-	std::vector<IndexInfo> out;
-	out.reserve(info.dim());
-
-	if(info.type() == IndexType::SINGLE){
-	    out.push_back(info);
-	}
-	else {
-	    for(size_t i = 0; i != info.dim(); ++i){
-		auto vv = getRootIndices(*info.getPtr(i));
-		out.insert(out.end(), vv.begin(), vv.end());
-	    }
-	}
-	return out;
-    }
-
-    //inline size_t getStepSize(const IndexInfo& ii, std::intptr_t j)
-    
-    size_t getStepSize(const std::vector<IndexInfo>& iv, std::intptr_t j)
-    {
-	size_t ss = 1;
-	for(auto ii = iv.end() - 1; ii != iv.begin(); --ii){
-	    if(ii->getPtrNum() == j){
-		return ss;
-	    }
-	    ss *= ii->max();
-	}
-	if(iv.begin()->getPtrNum() == j){
-	    return ss;
-	} else {
-	    return 0;
-	}
-    }
-    
-} // end namespace MultiArrayTools