Exotic
Encyclopedia
Exotic can mean:
- In mathematics:
- Exotic R4Exotic R4In mathematics, an exotic R4 is a differentiable manifold that is homeomorphic to the Euclidean space R4, but not diffeomorphic.The first examples were found by Robion Kirby and Michael Freedman, by using the contrast between Freedman's theorems about topological 4-manifolds, and Simon Donaldson's...
- differentiable manifold homeomorphic but not diffeomorphic to the Euclidean space R4 - Exotic sphereExotic sphereIn differential topology, a mathematical discipline, an exotic sphere is a differentiable manifold M that is homeomorphic but not diffeomorphic to the standard Euclidean n-sphere...
- differentiable manifold homeomorphic but not diffeomorphic to the ordinary sphere
- Exotic R4
- In physics:
- Exotic atomExotic atomAn exotic atom is an otherwise normal atom in which one or more sub-atomic particles have been replaced by other particles of the same charge. For example, electrons may be replaced by other negatively charged particles such as muons or pions...
atom with one or more electrons replaced by other negatively charged particles - Exotic hadronExotic hadronExotic hadrons are subatomic particles made of quarks , but which do not fit into the usual scheme of hadrons. While bound by the strong interaction they are not predicted by the simple quark model...
s:- Exotic baryonExotic baryonExotic baryons are hypothetical composite particles which are bound states of 3 quarks and additional elementary particles. This is to be contrasted with ordinary baryons, which are bound states of just 3 quarks. The additional particles may include quarks, antiquarks or gluons.One such exotic...
s - bound states of 3 quarks and additional particles - Exotic mesonExotic mesonNon-quark model mesons include#exotic mesons, which have quantum numbers not possible for mesons in the quark model;#glueballs or gluonium, which have no valence quarks at all;...
s - non-quark model mesons
- Exotic baryon
- Exotic matterExotic matterIn physics, exotic matter is a term which refers to matter which would somehow deviate from the norm and have "exotic" properties. There are several uses of the term....
- a hypothetical concept of particle physics
- Exotic atom
- In other fields:
- Exotic petExotic petAn exotic pet is a rare or unusual animal pet, or an animal kept as a pet which is not commonly thought of as a pet.The definition is an evolving one; some rodents, reptiles, and amphibians have become firmly enough established in the world of animal fancy to no longer be considered exotic...
- non common pet- Exotic cat - a breed of cat
- Exotic dancerExotic dancerThe terms exotic dancer and exotic dance can have different meanings in different parts of the world and depending on context. In the erotic sense, "exotic dance" is a often used to refer to practitioners of striptease...
- a type of dancer or stripper - Exotic derivativesExotic derivativesExotic derivatives refers to a specific type of financial asset.*Derivatives are assets whose value depends on another underlying asset.*Exotic as opposed to vanilla refers to the fact that the payoff is not standard, as is the case for a regular call option.See also Exotic option...
- a type of financial derivatives - Introduced speciesIntroduced speciesAn introduced species — or neozoon, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its indigenous or native distributional range, and has arrived in an ecosystem or plant community by human activity, either deliberate or accidental...
, also called exotic species, a species not native to an area
- Exotic pet