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In mathematics, specifically group theory,a descendant tree is a hierarchical structurefor visualizing parent-descendant relationsbetween isomorphism classes of finite groups of prime power order ,for a fixed prime number and varying integer exponents .Such groups are briefly called finite p-groups.The vertices of a descendant tree are isomorphism classes of finite p-groups.

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  • Descendant tree (group theory)
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  • In mathematics, specifically group theory,a descendant tree is a hierarchical structurefor visualizing parent-descendant relationsbetween isomorphism classes of finite groups of prime power order ,for a fixed prime number and varying integer exponents .Such groups are briefly called finite p-groups.The vertices of a descendant tree are isomorphism classes of finite p-groups.
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  • In mathematics, specifically group theory,a descendant tree is a hierarchical structurefor visualizing parent-descendant relationsbetween isomorphism classes of finite groups of prime power order ,for a fixed prime number and varying integer exponents .Such groups are briefly called finite p-groups.The vertices of a descendant tree are isomorphism classes of finite p-groups. Additionally to their order , finite p-groups have two further related invariants,the nilpotency class and the coclass .It turned out that descendant trees of a particular kind,the so-called pruned coclass trees whose infinitely many vertices share a common coclass ,reveal a repeating finite pattern.These two crucial properties of finiteness and periodicityadmit a characterization of all members of the treeby finitely many parametrized presentations.Consequently, descendant trees play a fundamental rolein the classification of finite p-groups.By means of kernels and targets of Artin transfer homomorphisms,descendant trees can be endowed with additional structure. An important question is how the descendant tree can actually be constructedfor an assigned starting group which is taken as the root of the tree.The p-group generation algorithm is a recursive processfor constructing the descendant tree of a given finite p-group playing the role of the tree root.This algorithm is implemented in the computational algebra systems GAP and Magma.
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