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      "title": "Various useful multivariate polynomials",
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        "homog",
        "linear",
        "lone",
        "ones",
        "product",
        "single",
        "uni",
        "zero"
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        "deriv.multipol"
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        "[.multipol",
        "[<-.multipol"
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        "multipol"
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        "Conclusions",
        "An example"
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