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    "reduce_simple_sparse_array",
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    "simple_triplet_diag_matrix",
    "simple_triplet_matrix",
    "simple_triplet_zero_matrix",
    "simplify_simple_sparse_array",
    "slam_options",
    "tcrossapply_simple_triplet_matrix",
    "tcrossprod_simple_triplet_matrix",
    "write_stm_CLUTO",
    "write_stm_MC"
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      "title": "Combine Sparse Arrays",
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        "extend_simple_sparse_array"
      ]
    },
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      "topics": [
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        "crossapply_simple_triplet_matrix",
        "rowapply_simple_triplet_matrix",
        "tcrossapply_simple_triplet_matrix"
      ]
    },
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        "matprod_simple_triplet_matrix",
        "tcrossprod_simple_triplet_matrix"
      ]
    },
    {
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      "topics": [
        "read_stm_CLUTO",
        "read_stm_MC",
        "write_stm_CLUTO",
        "write_stm_MC"
      ]
    },
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      "topics": [
        "col_norms",
        "row_norms"
      ]
    },
    {
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      "title": "Options for the `slam' package",
      "topics": [
        "slam_options"
      ]
    },
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      "page": "rollup",
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        "rollup.array",
        "rollup.matrix",
        "rollup.simple_sparse_array",
        "rollup.simple_triplet_matrix"
      ]
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        "as.simple_sparse_array",
        "drop_simple_sparse_array",
        "is.simple_sparse_array",
        "reduce_simple_sparse_array",
        "simple sparse array",
        "simple_sparse_array",
        "simple_sparse_zero_array",
        "simplify_simple_sparse_array"
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      "topics": [
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        "is.simple_triplet_matrix",
        "simple triplet matrix",
        "simple_triplet_diag_matrix",
        "simple_triplet_matrix",
        "simple_triplet_zero_matrix"
      ]
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        "col_means.simple_triplet_matrix",
        "col_sums",
        "col_sums.simple_triplet_matrix",
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