We study the cardinal invariants of analytic P-ideals, concentrating on the ideal Z of asymptotic density zero. Among other results we prove min {b, cov (N)} <= cov* (Z) <= max {b, non (N)}.
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机译：我们研究了解析P理想的基本不变式，重点是渐近密度为零的理想Z。在其他结果中，我们证明min {b，cov（N）} <= cov *（Z）<= max {b，non（N）}。
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