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  2. Group theory - Wikipedia

    en.wikipedia.org/wiki/Group_theory

    Class groups of algebraic number fields were among the earliest examples of factor groups, of much interest in number theory. If a group G is a permutation group on a set X , the factor group G / H is no longer acting on X ; but the idea of an abstract group permits one not to worry about this discrepancy.

  3. Advocacy group - Wikipedia

    en.wikipedia.org/wiki/Advocacy_group

    Advocacy groups, also known as lobby groups, interest groups, special interest groups, pressure groups, or public associations, use various forms of advocacy or lobbying to influence public opinion and ultimately public policy. [1] They play an important role in the development of political and social systems. [2]

  4. Iron triangle (US politics) - Wikipedia

    en.wikipedia.org/wiki/Iron_triangle_(US_politics)

    The interests of the agency's constituency (the interest groups) are met, while the needs of consumers (which may be the general public) are passed over. [ 20 ] That public administration may result in benefiting a small segment of the public in this way, may be viewed as problematic for the popular concept of democracy if the general welfare ...

  5. Government interest - Wikipedia

    en.wikipedia.org/wiki/Government_interest

    A government interest is compelling if it is essential or necessary rather than a matter of choice, preference, or discretion. [1] When government action infringes an individual's fundamental rights, the government must show that the government's action is necessary to achieve a compelling government interest. The protection of public health ...

  6. Interest group liberalism - Wikipedia

    en.wikipedia.org/wiki/Interest_group_liberalism

    Lowi's seminal book, first published in 1969, was titled The End of Liberalism, and presented a critique of the role of interest groups in American government, [1] arguing that "any group representing anything at all, is dealt with and judged according to the political resources it brings to the table and not for the moral or rationalist ...

  7. Algebraically closed group - Wikipedia

    en.wikipedia.org/wiki/Algebraically_closed_group

    By a solution in to this finite set of equations and inequations, we mean a homomorphism :, such that ~ = for all and ~ for all , where ~ is the unique homomorphism ~: that equals on and is the identity on .

  8. Suzuki groups - Wikipedia

    en.wikipedia.org/wiki/Suzuki_groups

    In the area of modern algebra known as group theory, the Suzuki groups, denoted by Sz(2 2n+1), 2 B 2 (2 2n+1), Suz(2 2n+1), or G(2 2n+1), form an infinite family of groups of Lie type found by Suzuki , that are simple for n ≥ 1. These simple groups are the only finite non-abelian ones with orders not divisible by 3.

  9. Thompson groups - Wikipedia

    en.wikipedia.org/wiki/Thompson_groups

    The Thompson group F is generated by operations like this on binary trees. Here L and T are nodes, but A B and R can be replaced by more general trees.. The group F also has realizations in terms of operations on ordered rooted binary trees, and as a subgroup of the piecewise linear homeomorphisms of the unit interval that preserve orientation and whose non-differentiable points are dyadic ...