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  2. United States order of precedence - Wikipedia

    en.wikipedia.org/wiki/United_States_order_of...

    The United States order of precedence is an advisory document maintained by the Ceremonials Division of the Office of the Chief of Protocol of the United States which lists the ceremonial order, or relative preeminence, for domestic and foreign government officials (military and civilian) at diplomatic, ceremonial, and social events within the United States and abroad.

  3. Simple Lie group - Wikipedia

    en.wikipedia.org/wiki/Simple_Lie_group

    Once these are known, the ones with non-trivial center are easy to list as follows. Any simple Lie group with trivial center has a universal cover whose center is the fundamental group of the simple Lie group. The corresponding simple Lie groups with non-trivial center can be obtained as quotients of this universal cover by a subgroup of the ...

  4. List of forms of government - Wikipedia

    en.wikipedia.org/wiki/List_of_forms_of_government

    A form of government where the monarch is elected, a modern example being the King of Cambodia, who is chosen by the Royal Council of the Throne; Vatican City is also often considered a modern elective monarchy. Self-proclaimed monarchy: A form of government where the monarch claims a monarch title without a nexus to the previous monarch dynasty.

  5. List of finite simple groups - Wikipedia

    en.wikipedia.org/wiki/List_of_finite_simple_groups

    F 4 (q) has a non-trivial graph automorphism when q is a power of 2. These groups are the automorphism groups of 8-dimensional Cayley algebras over finite fields, which gives them 7-dimensional representations. They also act on the corresponding Lie algebras of dimension 14. G 2 (q) has a non-trivial graph automorphism when q is a power of 3

  6. General Schedule (US civil service pay scale) - Wikipedia

    en.wikipedia.org/wiki/General_Schedule_(US_civil...

    US Government Employees Pay Comparison. Protocol Precedence Lists for civilian and military personnel have been developed by each of the Department of Defense organizations to establish the order of government, military, and civic leaders for diplomatic, ceremonial, and social events. Protocol is a code of established guidelines on proper ...

  7. Rank of a group - Wikipedia

    en.wikipedia.org/wiki/Rank_of_a_group

    Indeed, for p-groups, the rank of the group P is the dimension of the vector space P/Φ(P), where Φ(P) is the Frattini subgroup. The rank of a group is also often defined in such a way as to ensure subgroups have rank less than or equal to the whole group, which is automatically the case for dimensions of vector spaces, but not for groups such ...

  8. Rank of an abelian group - Wikipedia

    en.wikipedia.org/wiki/Rank_of_an_abelian_group

    In particular, any intermediate group Z n < A < Q n has rank n. Abelian groups of rank 0 are exactly the periodic abelian groups. The group Q of rational numbers has rank 1. Torsion-free abelian groups of rank 1 are realized as subgroups of Q and there is a satisfactory classification of them up to isomorphism. By contrast, there is no ...

  9. Nilpotent group - Wikipedia

    en.wikipedia.org/wiki/Nilpotent_group

    If a group has nilpotency class at most n, then it is sometimes called a nil-n group. It follows immediately from any of the above forms of the definition of nilpotency, that the trivial group is the unique group of nilpotency class 0, and groups of nilpotency class 1 are exactly the non-trivial abelian groups. [2] [3]