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Topics referred to by the same term
Ring structure may refer to: Chiastic structure, a literary technique Heterocyclic compound, a chemical structure Ring (mathematics), an algebraic structure
Ring_structure
Saturn has the most extensive and complex ring system of any planet in the Solar System. The rings consist of particles in orbit around the planet, ranging
Rings_of_Saturn
Algebraic structure with addition and multiplication
In mathematics, a ring is an algebraic structure consisting of a set with two binary operations typically called addition and multiplication and denoted
Ring_(mathematics)
Set with operations obeying given axioms
is an algebraic structure that is a vector space over a field or a module over a commutative ring. The collection of all structures of a given type (same
Algebraic_structure
Molecule with one or more rings composed of different elements
heterocyclic compound or ring structure is a hydrocarbon-based cyclic compound that contains at least one heteroatom as member(s) of its ring(s). Heterocyclic
Heterocyclic_compound
Ring-shaped large-scale structure near the constellation Boötes
The Big Ring is a ring-shaped large-scale structure formed by galaxies and galaxy clusters near the constellation Boötes with a diameter of 1.3 billion
Big_Ring
Literary technique in narrative motifs and other textual passages
presented as A,B,B',A'. Chiastic structures that involve more components are sometimes called "ring structures" or "ring compositions". These may be regarded
Chiastic_structure
Crater containing multiple concentric topographic rings
point. Usually, a peak ring crater has a high structure with a terrace and has slump structures inside of it. In adjacent rings, the ratio of the diameters
Multi-ringed_basin
revealed a rich fine structure in the main ring. In visible and near-infrared light, the rings have a reddish color, except the halo ring, which is neutral
Rings_of_Jupiter
Data structure in computer science
cyclic buffer or ring buffer is a data structure that uses a single, fixed-size buffer as if it were connected end-to-end. This structure lends itself easily
Circular_buffer
Literary device in Tolkien's fiction
Scholars have described the narrative structure of The Lord of the Rings, a high fantasy work by J. R. R. Tolkien published in 1954–55, in a variety of
Narrative structure of The Lord of the Rings
Narrative_structure_of_The_Lord_of_the_Rings
Cohomology class
structured ring spectrum or A ∞ {\displaystyle A_{\infty }} -ring is an object in homotopy theory encoding a refinement of a multiplicative structure
Highly structured ring spectrum
Highly_structured_ring_spectrum
Prehistoric impact crater in Mexico
largest impact structures on Earth, alongside the much older Sudbury and Vredefort impact structures, and the only one whose peak ring is intact and directly
Chicxulub_crater
Chemical property
aromaticity is a chemical property describing the way in which a conjugated ring of unsaturated bonds, lone pairs, or empty orbitals exhibits a stabilization
Aromaticity
Molecule with a ring of bonded atoms
A cyclic compound (or ring compound) is a chemical compound which includes a ring. Rings have three or more atoms, and include examples where all the atoms
Cyclic_compound
Topics referred to by the same term
(disambiguation) Ring Ring Ring (disambiguation) Ring Road (disambiguation) Ring structure (disambiguation) Annulus (disambiguation) Brass ring, a grabbable ring on
Ring
Roughly circular ring within an impact crater
by strong vibrations that develop during crater formation. The peak-ring structure of Chicxulub crater was probably formed as inward-collapsing material
Peak_ring
Impact structure in Western Australia
Shoemaker (formerly known as Teague Ring) is an impact structure, the deeply eroded remnant of a former impact crater, situated in arid central Western
Shoemaker_impact_structure
Galaxy with an annular appearance
A ring galaxy is a type of galaxy that includes a large annular structure. The galactic center may be relatively separate from the ring structure, or
Ring_galaxy
Astronomical objects
list of ring galaxies. A ring galaxy, as the name suggests, is a disc or spiral galaxy with its galactic disc structured or distorted into a ring or torus-like
List_of_ring_galaxies
Algebra term
commutative ring structure, by using the tensor product of quadratic forms to define the ring product. This is sometimes called the Witt ring W(k), though
Witt_group
Structure in some metamaterials
A split-ring resonator (SRR) is an artificially produced structure common to metamaterials. Its purpose is to produce the desired magnetic susceptibility
Split-ring_resonator
Circular geological feature in the Sahara desert
causing the rock to be exposed as concentric rings with the oldest layers exposed at the centre of the structure. Igneous rock is exposed inside and there
Richat_Structure
Type of counter
input of the first, making a "circular" or "ring" structure. There are two types of ring counters: A straight ring counter, also known as a one-hot counter
Ring_counter
Type of intrusive igneous body
A ring dike or ring dyke is an intrusive igneous body that is circular, oval or arcuate in plan and has steep contacts. While the widths of ring dikes
Ring_dike
Notion in abstract algebra
to be the ring of all upper triangular matrices. However, it is not always the case that the injective hull of a ring has a ring structure, as an example
Injective_hull
Group of websites linked in a ring structure
A webring (or web ring) is a collection of websites linked together in a circular structure, usually organized around a specific theme, and often educational
Webring
27th chapter of the Qur'an
the focal point. Another valid reading of the text uses ring structure (see Chiastic structure). Favored in prominent modern scholar of Qur'anic studies
An-Naml
2001 film by Peter Jackson
The Lord of the Rings: The Fellowship of the Ring is a 2001 epic fantasy film directed by Peter Jackson from a screenplay by Fran Walsh, Philippa Boyens
The Lord of the Rings: The Fellowship of the Ring
The_Lord_of_the_Rings:_The_Fellowship_of_the_Ring
Galaxy with an outer ring of gas and stars
with the smaller galaxy effectively forming the polar-ring structure. The best-known polar-ring galaxies are S0s (lenticular galaxies), but from the physical
Polar-ring_galaxy
Cohen structure theorem, introduced by Cohen (1946), describes the structure of complete Noetherian local rings. Some consequences of Cohen's structure theorem
Cohen_structure_theorem
Nitrogen-containing biological compounds that form nucleosides
more stable bond to thymine. Adenine and guanine have a fused-ring skeletal structure derived of purine, hence they are called purine bases. The purine
Nucleotide_base
Branch of algebra
integers. Ring theory studies the structure of rings; their representations, or, in different language, modules; special classes of rings (group rings, division
Ring_theory
Infinite sum that is considered independently from any notion of convergence
side. This topological structure, together with the ring operations described above, form a topological ring. This is called the ring of formal power series
Formal_power_series
Ring produced from two fields
disjoint for distinct p. To get a general theory, one needs to consider a ring structure on K ⊗ N L {\displaystyle K\otimes _{N}L} . One can define the product
Tensor_product_of_fields
Sheaf of rings in mathematics
topological space equipped with a sheaf of rings called a structure sheaf. It is an abstraction of the concept of the rings of continuous (scalar-valued) functions
Ringed_space
Type of chemical bonding with metal ions
covalent bonds between a ligand and a single metal atom, thereby forming a ring structure. The ligand is called a chelant, chelator, chelating agent, or sequestering
Chelation
Ring that is also a vector space or a module
commutative ring (often a field) K is a ring A together with a ring homomorphism from K into the center of A. This is thus an algebraic structure with an
Associative_algebra
Small natural satellite orbiting a planet
hypothetical components of Saturn's F-ring structure, but in that year, the Earth passed through Saturn's ring plane. The Hubble Space Telescope and the
Moonlet
Class of organic compounds
are called porphyrins. With a total of 26 π-electrons the porphyrin ring structure is a coordinated aromatic system. One result of the large conjugated
Porphyrin
Biomolecular structure of nucleic acids such as DNA and RNA
ring structure, a six-membered and a five-membered ring containing nitrogen. The pyrimidines are cytosine and thymine. It has a single ring structure
Nucleic_acid_structure
Mathematical structure in abstract algebra
"star-algebra") is a mathematical structure consisting of two involutive rings R and A, where R is commutative and A has the structure of an associative algebra
*-algebra
Callistoan multi-ringed impact basin
central region of Asgard is expected to be ~ 250 km in diameter, the ring structure reaches ~ 1880 km in diameter, and the crater is suspected to have a
Asgard_(crater)
Banding resulting from chemical reactions
seen as rings in a Petri dish or bands in a test tube; however, more complex patterns have been observed, such as dislocations of the ring structure in a
Liesegang_rings
Round wooden structure at Expo 2025
wooden architectural structure on earth according to the Guinness Book of World Records. As the name suggests, it was a large wooden ring covering 61,035 square
Grand_Ring
Lake in Quebec, Canada
The crater is a multiple-ring structure about 100 km (60 mi) across, with the reservoir at its 70 km (40 mi) diameter inner ring being its most prominent
Manicouagan_Reservoir
1954–1955 fantasy novel by J. R. R. Tolkien
The Lord of the Rings is an epic high fantasy novel written by the English author and scholar J. R. R. Tolkien. Set in Middle-earth, the story began as
The_Lord_of_the_Rings
Concept in algebraic topology
'cohomology' is usually understood as singular cohomology, but the ring structure is also present in other theories such as de Rham cohomology. It is
Cohomology_ring
Submodule of a mathematical ring
In mathematics, and more specifically in ring theory, an ideal of a ring is a special subset of its elements. Ideals generalize certain subsets of the
Ideal_(ring_theory)
1954 part of novel by J. R. R. Tolkien
The Fellowship of the Ring is the first of three volumes of the epic novel The Lord of the Rings by the English author J. R. R. Tolkien; it is followed
The_Fellowship_of_the_Ring
Chemical compound
the structures depends on Sonogashira coupling and other synthetic techniques. By replacing the 1,3-dioxolane group with an appropriate ring structure, various
NanoPutian
Torus-shaped vortex in a fluid
and potentially forcing the transition of the vortex ring to turbulence. Vortex ring structures are easily observable in nature. For instance, a mushroom
Vortex_ring
Cycle of four operas by Richard Wagner
structured in three days preceded by a Vorabend ("preliminary evening"). It is often referred to as the Ring cycle, Wagner's Ring, or simply The Ring
Der_Ring_des_Nibelungen
Polycyclic organic compound having sterane as a core structure
radically modified, such as by changes to the ring structure, for example, cutting one of the rings. Cutting Ring B produces secosteroids one of which is vitamin
Steroid
Scissor-type structure Multiple scissor-type structure Simple Hoberman mechanism Compound Hoberman mechanism Outward folding deployable ring structure Inward
Deployable_structure
Large multi-ring impact crater on Jupiter's moon Callisto
significantly younger than Callisto itself. The Valhalla multi-ring structure (like other Callistan multi-ring basins) probably resulted from a giant impact, which
Valhalla_(crater)
2022 video game
story; the scale required the construction of several structures around its world. Elden Ring won several Game of the Year awards and has been cited
Elden_Ring
Fluvastatin has indole ring structure, while atorvastatin and rosuvastatin have pyrrole and pyrimidine based ring structure respectively. The lipophilic
Discovery and development of statins
Discovery_and_development_of_statins
Tectonic belt of earthquakes and volcanoes
including most of its largest, occur within the belt. The Ring of Fire is not a single geological structure. It was created by the subduction of different tectonic
Ring_of_Fire
Second-largest moon of Jupiter
the influence of impacts. Prominent surface features include multi-ring structures, variously shaped impact craters, and chains of craters called catenae
Callisto_(moon)
Ring that encodes the possible group actions of a finite group
algebraic ring structure is a more recent development, due to Solomon (1967). Given a finite group G, the generators of its Burnside ring Ω(G) are the
Burnside_ring
Patterns in earthquake activity
Ring-shaped seismicity structures are patterns in earthquake activity where their epicenters are distributed evenly to form a ring-like or elliptical shape
Ring-shaped seismicity structures
Ring-shaped_seismicity_structures
Cage-like allotrope of carbon
a type of fullerene with the formula C 60. It has a cage-like fused-ring structure (truncated icosahedron) made of twenty hexagons and twelve pentagons
Buckminsterfullerene
Capillary flow effect
suspended particles of size 100 nm, the minimum diameter of the coffee ring structure is found to be 10 μm, or about 10 times smaller than the width of human
Coffee_ring_effect
Commutative monoid in simplicial abelian groups
commutative ring. Then the ring structure of A gives π ∗ A = ⊕ i ≥ 0 π i A {\displaystyle \pi _{*}A=\oplus _{i\geq 0}\pi _{i}A} the structure of a graded-commutative
Simplicial_commutative_ring
1970 science fiction novel by Larry Niven
Wu and his companions on a mission to the Ringworld, an enormous rotating ring, an alien construct in space 186 million miles (299 million kilometres) in
Ringworld
Cave and archaeological site in France with Neanderthal stalagmite structures
sites, east of Montauban in southwestern France. Annular (ring) and accumulation (pile) structures made of broken stalagmites have been found 336 metres from
Bruniquel_Cave
Class of plant-derived organic compounds with soap-like properties
of a five-ring structure, with an additional sixth ring containing C22-26; meanwhile, the furostane skeleton consists of a five-ring structure, wherein
Saponin
_{p}&k{\text{ even}}\\0&k{\text{ odd}}\end{cases}}} but if we consider the ring structure on H H ∗ ( F p / Z ) = F p ⟨ u ⟩ = F p [ u , u 2 / 2 ! , u 3 / 3 !
Topological Hochschild homology
Topological_Hochschild_homology
Vector space equipped with a bilinear product
commutative ring, then any unital ring homomorphism R → A defines an R-module structure on A, and this is what is known as the R-algebra structure. So a ring comes
Algebra_over_a_field
2001–2003 films by Peter Jackson
The Lord of the Rings is a trilogy of epic fantasy films directed by Peter Jackson. The films are based on the novel by J. R. R. Tolkien, drawing their
The Lord of the Rings (film series)
The_Lord_of_the_Rings_(film_series)
Microporous, aluminosilicate mineral group
SiO4 tetrahedral structure. Connecting oxygen atoms together creates a four-membered ring of oxygen (blue bold line). In fact, such a ring substructure is
Zeolite
Type of algebraic structure
In mathematics, in particular abstract algebra, a graded ring is a ring such that the underlying additive group is a direct sum of abelian groups R i {\displaystyle
Graded_ring
Structure-preserving function between two rings
mathematics, a ring homomorphism is a structure-preserving function between two rings. More explicitly, if R and S are rings, then a ring homomorphism is
Ring_homomorphism
carry a natural λ-ring structure. λ-rings also provide a powerful formalism for studying an action of the symmetric functions on the ring of polynomials
Λ-ring
Island The Richat structure (a geologic dome) The Arkenu structures (a pair of ring dikes) Brukkaros Mountain (a tuff ring) A forest ring in Ontario Earth
List of possible impact structures on Earth
List_of_possible_impact_structures_on_Earth
Algebraic structure in mathematics
mathematics, a near-ring (also near ring or nearring) is an algebraic structure similar to a ring but satisfying fewer axioms. Near-rings arise naturally
Near-ring
2003 film by Peter Jackson
The Lord of the Rings: The Return of the King is a 2003 epic fantasy film directed by Peter Jackson from a screenplay he wrote with Fran Walsh and Philippa
The Lord of the Rings: The Return of the King
The_Lord_of_the_Rings:_The_Return_of_the_King
Galaxy in the constellation Virgo
NGC 4579) is an intermediate barred spiral galaxy with a weak inner ring structure located within the constellation Virgo, approximately 68 million light-years
Messier_58
Mathematical object
power structure is meant. The term divided power ideal refers to an ideal with a given divided power structure, and divided power ring refers to a ring with
Divided_power_structure
Overview of and topical guide to algebraic structures
basically "half" of a lattice structure (see below). The main types of structures with one set having two binary operations are ring-like or ringoids and lattice-like
Outline of algebraic structures
Outline_of_algebraic_structures
Protein complex that degrades RNA
similar functions. The core of the exosome contains a six-membered ring structure to which other proteins are attached. In eukaryotic cells, the exosome
Exosome_complex
Chemical compound
flourished in the 1960s and 1970s. Wieland–Miescher ketone contains the AB-ring structure of steroids and is for this reason an attractive starting material for
Wieland–Miescher_ketone
Chain polymerization involving cyclic monomers
chain. Anionic ring-opening polymerizations (AROP) involve nucleophilic reagents as initiators. Monomers with a three-member ring structure - such as epoxides
Ring-opening_polymerization
Chromosome whose ends have fused together to form a ring
appeared “almost or entirely closed and somewhat rounded,” a structure later interpreted as a ring chromosome. In 1930, Mikhail Sergeevich Navashin described
Ring_chromosome
divided by the Vandermonde polynomial. Thus, denoting the ring of symmetric polynomials by Λn, the ring of symmetric and alternating polynomials is Λ n [ v
Alternating_polynomial
Nebula in the constellation of Scorpius
(DUst-Prominent Longitudinally-EXtended) protoplanetary nebula. The spherical ring structures around the nebula were created throughout the asymptotic giant branch
Cotton_Candy_Nebula
Chemical compound
molecular formula C7H5NO, which features a fused benzene-isoxazole bicyclic ring structure. It is an isomer of the more common compounds benzoxazole and benzisoxazole
Anthranil
Algebraic structure used in topology
cohomology theories have a product, the cup product, which gives them a ring structure. Because of this feature, cohomology is usually a stronger invariant
Cohomology
Conceptual artificial ring around the Earth
ring concept that forms a space elevator. The tethered ring is a dynamic structure that uses at least one complete and continuous non-orbiting ring with
Orbital_ring
Transatlantic telephone cable
initially carrying 2 × 5 Gbit/s. This was the first TAT cable to use a ring structure, involving two stretches of cable across the ocean floor, which explains
TAT-12/13
..34.1882R. G. Monegato; M. Massironi & E. Martellato (2010). "The Ring Structure of Wembo-Nyama (Eastern Kasai, R.D. Congo): A Possible Impact Crater
List of impact structures in Africa
List_of_impact_structures_in_Africa
This is a list of buildings and other structures that have been envisioned. The definition of "vision" is that used by the Council on Tall Buildings and
List of visionary tall buildings and structures
List_of_visionary_tall_buildings_and_structures
Generalization of vector spaces from fields to rings
Authors who do not require rings to be unital omit condition 4 in the definition above; they would call the structures defined above "unital left R-modules"
Module_(mathematics)
Chemical compound
pyrrole-like rings joined by four methine bridges, which makes it the simplest of the tetrapyrroles. The nonpolar tetrapyrrolic ring structure of porphine
Porphine
Chemical compound
the three-ring backbone of the structure. The Wender group was able to form the first ring of the structure by first synthesizing Structure 1 in Figure
Resiniferatoxin
Class of enzyme which catalyzes elimination reactions
substitution reaction) and oxidation, often forming a new double bond or a new ring structure. The reverse reaction is also possible (called a Michael reaction).
Lyase
Graphic representation of a molecular structure
case the two possible ring structures are in chemical equilibrium with each other and also with the open-chain structure. The ring automatically opens and
Structural_formula
Class of chemical compounds
Butenolides are a class of lactones with a four-carbon heterocyclic ring structure. They are sometimes considered oxidized derivatives of furan. The simplest
Butenolide
Geological events that formed the Ural Mountains
are about 2,500 km (1,600 mi). At the latitude of the Middle-Urals Ring Structure (c. 56° N, between Perm and Ufa) the Ural Mountains have an eastward-convex
Uralian_orogeny
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RING STRUCTURE
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