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A unitary state is a state governed as a single entity in which the central government is the supreme authority. The central government may create or abolish administrative divisions (sub-national or sub-state units).
A unitary parliamentary republic is a type of unitary state with a republican form of government in which political authority is entrusted to the parliament by multiple constituencies throughout a country. In this system, voters elect members of parliament, who then make legislative decisions on behalf of their constituents.
Time evolution described by a time-independent Hamiltonian is represented by a one-parameter family of unitary operators, for which the Hamiltonian is a generator: () = ^ /. In the Schrödinger picture , the unitary operators are taken to act upon the system's quantum state, whereas in the Heisenberg picture , the time dependence is ...
Unitary executive theory does not exist at the state or local level in the United States. In contrast to a single elected executive officer such as the president, plural executives exist in virtually all non-national governments, with states where executive officers such as lieutenant governor , attorney general , comptroller , secretary of ...
A central government is the government that is a controlling power over a unitary state.Another distinct but sovereign political entity is a federal government, which may have distinct powers at various levels of government, authorized or delegated to it by the federation and mutually agreed upon by each of the federated states.
Original of the Acts of Union that created the Kingdom of Great Britain as a unitary state. Historically, complex processes of political unitarization were often accompanied by political struggle between proponents of unitarism and radical centralization, and their opponents, advocating decentralization and regionalism. In political history ...
A complex matrix U is special unitary if it is unitary and its matrix determinant equals 1. For real numbers , the analogue of a unitary matrix is an orthogonal matrix . Unitary matrices have significant importance in quantum mechanics because they preserve norms , and thus, probability amplitudes .
In a national context, centralization occurs in the transfer of power to a typically unitary sovereign nation state. Executive and/or legislative power is then minimally delegated to unit subdivisions (state, county, municipal and other local authorities).