extremal statistic - ορισμός. Τι είναι το extremal statistic
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Τι (ποιος) είναι extremal statistic - ορισμός

Extremal graph
  • The edges between parts in a regular partition behave in a "random-like" fashion.
  • The [[Petersen graph]] has chromatic number 3.
  • cliques]]. This is ''T''(13,4).

statistic         
FUNCTION OF RANDOM VARIABLES
StatistiC; Sample statistic; Sample statistics
(statistics)
Frequency: The word is one of the 3000 most common words in English.
1.
Statistics are facts which are obtained from analysing information expressed in numbers, for example information about the number of times that something happens.
Official statistics show real wages declining by 24%...
There are no reliable statistics for the number of deaths in the battle.
= figure
N-COUNT: usu pl
2.
Statistics is a branch of mathematics concerned with the study of information that is expressed in numbers.
...a professor of Mathematical Statistics.
N-UNCOUNT
Statistic         
FUNCTION OF RANDOM VARIABLES
StatistiC; Sample statistic; Sample statistics
A statistic (singular) or sample statistic is any quantity computed from values in a sample which is considered for a statistical purpose. Statistical purposes include estimating a population parameter, describing a sample, or evaluating a hypothesis.
Statistic         
FUNCTION OF RANDOM VARIABLES
StatistiC; Sample statistic; Sample statistics
·adj ·Alt. of Statistical.

Βικιπαίδεια

Extremal graph theory

Extremal graph theory is a branch of combinatorics, itself an area of mathematics, that lies at the intersection of extremal combinatorics and graph theory. In essence, extremal graph theory studies how global properties of a graph influence local substructure. Results in extremal graph theory deal with quantitative connections between various graph properties, both global (such as the number of vertices and edges) and local (such as the existence of specific subgraphs), and problems in extremal graph theory can often be formulated as optimization problems: how big or small a parameter of a graph can be, given some constraints that the graph has to satisfy? A graph that is an optimal solution to such an optimization problem is called an extremal graph, and extremal graphs are important objects of study in extremal graph theory.

Extremal graph theory is closely related to fields such as Ramsey theory, spectral graph theory, computational complexity theory, and additive combinatorics, and frequently employs the probabilistic method.