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Home > Atomic (order theory)

An atomic poset P with least element 0 is one in which, for every non-zero element x of P, there is an atom a of P with a ≤ x.

Atoms in posets are abstract generalizations of singletons in set theory. Atomicity (the property of being atomic) provides an abstract generalization in the context of order theory of the ability to select an element from a non-empty set.

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Topics: Atomic (order Theory) Element Poset Atom Set Abstract Theory...

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Atomic numberThe atomic number Z is a term used in chemistry and physics to represent the number of protons found in the nucleus of an atom. In an atom of neutral charge, the number of electrons typically equals the atomic number. The atomic number originally meant th AtomicThe general meaning of "atomic" is "irreducible". That is, reduced to the smallest possible part. It has more specific meanings in several contexts: In chemistry, chemical atoms are grouped by type in the periodic table and consist of particles as describ Atomic physicsAtomic physics (or atom physics is physics of the electron hull of atoms. Lay people often associate the term atomic physics with nuclear power and nuclear bombs, obviously due to the synonymous use of atomic and nuclear in standard English. However, phys Atomic orbitalAn atomic orbital is the mode of behavior of an electron in an atom (see first Electron orbital). A given orbital is identified by unique values of three quantum numbers: , , and. The various types of orbitals An orbital is uniquely identified by the valu Atomic semanticsAtomic Semantics is a term which describes the guarantees provided by a data register shared by several processors in a parallel machine or in a network of computers working together. Atomic semantics are defined for a variable with a single writer but mu Atomic clockAn atomic clock is a type of clock that uses an atomic frequency standard as its counter. Early atomic clocks were masers with attached equipment. Today's best atomic frequency standards (or clocks) are based on more advanced physics involving caesium bea Atomic absorption spectroscopy Atomic theory Atomic weight Atomic mass Atomic mass unit Atomic, molecular, and optical physics Atomic radius Atomic nucleus Atomic City, Idaho