src/HOL/Matrix_LP/SparseMatrix.thy
2012-04-13 wenzelm 2012-04-13 updated headers;
2012-03-25 huffman 2012-03-25 merged fork with new numeral representation (see NEWS)
2012-03-17 wenzelm 2012-03-17 renamed HOL-Matrix to HOL-Matrix_LP to avoid name clash with AFP;