“W-hierarchy”的概念、定义、翻译、参考文献-科学参考

单词	W-hierarchy
释义	W-hierarchy Encyclopedia 理学参数算法释 W-hierarchyW-谱系对参数计算问题（见参数算法）的固定参数难解性进行分类的一套复杂性类。
随便看	Poincare-Birkhoff theorem Poincare Birkhoff Witt basis theorem Poincare-Birkhoff-Witt basis theorem Poincare-Birkhoff-Witt type basis Poincare conjecture Poincare divisor Poincare duality Poincare duality theorem Poincare element Poincare formula Poincare group Poincare inequality Poincare invariant Poincare invariant theorem Poincare Lefschetz duality Poincare-Lefschetz duality Poincare lemma Poincare limit cycle Poincare map Poincare metric Poincare recurrence Poincare return mapping Poincare scatterplot Poincare section Poincare sphere

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