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The krone (Danish: [ˈkʰʁoːnə]; plural: kroner; sign: kr.; code: DKK) is the official currency of Denmark, Greenland, and the Faroe Islands, introduced on 1 January 1875. [3] Both the ISO code "DKK" and currency sign "kr." are in common use; the former precedes the value, the latter in some contexts follows it.
The first krone coin was a 0.800 silver coin issued in 1875. It measured 25 millimetres (0.98 in) in diameter and weighed 7.5 grams (0.26 oz).
In particle physics, an example is given by the Skyrmion, for which the baryon number is a topological quantum number. The origin comes from the fact that the isospin is modelled by SU(2), which is isomorphic to the 3-sphere and inherits the group structure of SU(2) through its bijective association, so the isomorphism is in the category of topological groups.
Greenland, 50 Øre (1874), first year of issue for the Greenlandic krone. [1] The uniface note (valued at half a krone) was issued in Denmark for use in Greenland.The note depicts the royal monogram of Christian IX of Denmark on the left and a small crowned polar bear on the right.
Two-sided arithmetic progressions in are subsets of the form +:= {+:}, where , and > The intersection of two such arithmetic progressions is either empty, or is another arithmetic progression of the same form:
In condensed matter physics, topological quantum field theories are the low-energy effective theories of topologically ordered states, such as fractional quantum Hall states, string-net condensed states, and other strongly correlated quantum liquid states.
A function: between two topological spaces is a homeomorphism if it has the following properties: . is a bijection (one-to-one and onto),; is continuous,; the inverse function is continuous (is an open mapping).
Topologically, a map is a 2-cell decomposition of a compact connected 2-manifold. [1] The genus g, of a map M is given by Euler's relation = | | | | + | | which is equal to if the map is orientable, and if the map is non-orientable. It is a crucial fact that there is a finite (non-zero) number of regular maps for every orientable genus except ...