The same observation can be made for the perfect matching problem.

It was known before that the decision problem " Is there a perfect matching for a given bipartite graph?

The perfect matching counting problem was the first counting problem corresponding to an easy P problem shown to be # P-complete, in a 1979 paper by Leslie Valiant which also defined the classes # P and # P-complete for the first time.

The Christofides algorithm follows a similar outline but combines the minimum spanning tree with a solution of another problem, minimum-weight perfect matching.

This is the concept of ' exact ' or ' perfect ' matching to the translation memory.

Pulse-amplitude modulation LED drivers are able to synchronize pulses across multiple LED channels to enable perfect colour matching.

Recognizing the paramount importance of the sacred shield descended from the skies, King Numa had eleven matching shields made, so perfect that no one, even Numa, could distinguish the original any longer.

Because it was the perfect, perfect, perfect matching of personalities and gifts.

The minor can be formed by contracting the edges of a perfect matching, for instance the five short edges in the first picture.

* is cubic, has domination number 3, and has a perfect matching and a 2-factor.

If the weight of a perfect matching that matches to is defined to be the product of the weights of the edges in the matching, then

Closely related to the complete bipartite graphs are the crown graphs, formed from complete bipartite graphs by removing the edges of a perfect matching.

This simple matching network consisting of a single element will usually only achieve a perfect match at a single frequency.

In general, it is not theoretically possible to achieve perfect impedance matching at all frequencies with a network of discrete components.

Outerplanar graphs were first studied and named by, in connection with the problem of determining the planarity of graphs formed by using a perfect matching to connect two copies of a base graph ( for instance, many of the generalized Petersen graphs are formed in this way from two copies of a cycle graph ).

The Turán graph T ( 2n, n ) can be formed by removing a perfect matching from a complete graph K < sub > 2n </ sub >.

A perfect matching ( a. k. a. 1-factor ) is a matching which matches all vertices of the graph.

Figure ( b ) above is an example of a perfect matching.

Every perfect matching is maximum and hence maximal.

Microeconomics analyzes market failure, where markets fail to produce efficient results, and describes the theoretical conditions needed for perfect competition.

* In John Steinbeck's novel The Winter of Our Discontent, the protagonist Ethan Hawley describes a mandrake root in his family's collection of curios collected on whaling voyages, "[...] We even had a mandrake root-a perfect little man, sprouted from the death-ejected sperm of a hanged man [...]".

In Electroboy: A Memoir of Mania by Andy Behrman, he describes his experience of mania as " the most perfect prescription glasses with which to see the world ... life appears in front of you like an oversized movie screen ".

In economic theory, perfect competition describes markets such that no participants are large enough to have the market power to set the price of a homogeneous product.

Quintilian's work describes not just the art of rhetoric, but the formation of the perfect orator as a politically active, virtuous, publicly minded citizen.

The Whittaker – Shannon interpolation formula describes how to use a perfect low-pass filter to reconstruct a continuous signal from a sampled digital signal.

* Description: French for noble baritone and describes a part that requires a noble bearing, smooth vocalisation and forceful declamation, all in perfect balance.

She describes Barbie as " the perfect place to develop " and describes herself as " unable to fly.

Ibn Fadlan describes the Rus as " perfect physical specimens " and the hygiene of the Rūsiyyah as disgusting ( while also noting with some astonishment that they comb their hair every day ) and considers them vulgar and unsophisticated.

In his book, Sculpting in Time, Tarkovsky describes Bresson as " perhaps the only artist in cinema, who achieved the perfect fusion of the finished work with a concept theoretically formulated beforehand.

Plethon describes the creation of the universe as being perfect and outside of time, so that the universe remains eternal, without beginning or end.

Cohen describes Galahad as the “ perfect knight ” who does no harm.

One analyst, Michael Shelden, calls Newspeak " the perfect language for a society of bad writers ( like those Orwell describes in " Politics and the English Language ") because it reduces the number of choices available to them.

The usual method is to assume that the optical path through the instrument is optically perfect, convolved with a point spread function ( PSF ), that is, a mathematical function that describes the distortion in terms of the pathway a theoretical point source of light ( or other waves ) takes through the instrument.

The Scott catalogue generally only describes United States envelope color and value of the indicia which is perfect for dealing with cut squares, but falls short of information needed to collect entires, i. e. the whole envelope.

In game theory, perfect information describes the situation when a player has available the same information to determine all of the possible games ( all combinations of legal moves ) as would be available at the end of the game.

" Porphyria's lover then talks of the corpse's blue eyes, golden hair, and describes the feeling of perfect happiness the murder gives him.

Van Weyden describes Larsen as beautiful on more than one occasion, perfectly symmetrical, a perfect specimen of masculinity.

He was the intimate friend of Seneca, who wrote about him often, and who describes him as the perfect man:

Taylor describes this experience as “ The perfect storm of bad luck .”

He describes Southern Athabascan music, that of the Apache and Navajo, as the simplest next to the Great Basin style, featuring strophic form, tense vocals using pulsation and falsetto, tritonic and tetratonic scales in triad formation, simple rhythms and values of limited duration ( usually only two per song ), arc-type melodic contours, and large melodic intervals with a predominance of major and minor thirds and perfect fourths and fifths with octave leaps not rare.

Nettl describes the music of the sparesly settled Great Basin, including most of desert Utah and Nevada ( Paiute, Ute, Shoshoni ) and some of southern Oregon ( Modoc and Klamath ), as " extremely simple ," featuring melodic ranges averaging just over a perfect fifth, many tetratonic scales, and short forms.