Numeric.LinearAlgebra.Sparse.IntMap
insertIM2
lookupIM2
fromListIM2
ifoldlIM2'
ifoldlIM2
foldlIM2
transposeIM2
ifilterIM2
filterSubdiag
countSubdiagonalNZ
subdiagIndices
rpairs
mapIM2
imapIM2
mapKeysIM2
mapColumnIM2