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  2. 4 3 2 1 (novel) - Wikipedia

    en.wikipedia.org/wiki/4_3_2_1_(novel)

    4 3 2 1 is a 2017 novel by Paul Auster published by Henry Holt and Co. It describes four alternate versions of the life of Archie Ferguson in the 1950s and 1960s, and explores how an individual's life and personality is shaped by chance and circumstance. In September 2017 it was shortlisted for the 2017 Man Booker Prize. [1]

  3. Degree (graph theory) - Wikipedia

    en.wikipedia.org/wiki/Degree_(graph_theory)

    Two non-isomorphic graphs with the same degree sequence (3, 2, 2, 2, 2, 1, 1, 1). The degree sequence of an undirected graph is the non-increasing sequence of its vertex degrees; [5] for the above graph it is (5, 3, 3, 2, 2, 1, 0). The degree sequence is a graph invariant, so isomorphic graphs have the same degree sequence. However, the degree ...

  4. 4, 3, 2, 1 - Wikipedia

    en.wikipedia.org/wiki/4,_3,_2,_1

    4–3–2–1, a common formation in association football; See also. 1234 (disambiguation) "5-4-3-2-1", a 1963 single by Manfred Mann; 54321, a 2016 Tamil thriller film;

  5. Cayley's formula - Wikipedia

    en.wikipedia.org/wiki/Cayley's_formula

    The complete list of all trees on 2,3,4 labeled vertices: = tree with 2 vertices, = trees with 3 vertices and = trees with 4 vertices. In mathematics, Cayley's formula is a result in graph theory named after Arthur Cayley.

  6. Four stages of competence - Wikipedia

    en.wikipedia.org/wiki/Four_stages_of_competence

    However, demonstrating the skill or knowledge requires concentration, and if it is broken, they lapse into incompetence. [1] Unconscious competence The individual has had so much practice with a skill that it has become "second nature" and can be performed easily. As a result, the skill can be performed while executing another task.

  7. Frequency partition of a graph - Wikipedia

    en.wikipedia.org/wiki/Frequency_partition_of_a_graph

    This indicates that it has 3 vertices with some degree, 2 vertices with some other degree, and 1 vertex with a third degree. The degree sequence of the bipartite graph in the middle below is (3, 2, 2, 2, 2, 2, 1, 1, 1) and its frequency partition is 9 = 5 + 3 + 1. The degree sequence of the right-hand graph below is (3, 3, 3, 3, 3, 3, 2) and ...

  8. Havel–Hakimi algorithm - Wikipedia

    en.wikipedia.org/wiki/Havel–Hakimi_algorithm

    A simple graph contains no double edges or loops. [1] The degree sequence is a list of numbers in nonincreasing order indicating the number of edges incident to each vertex in the graph. [2] If a simple graph exists for exactly the given degree sequence, the list of integers is called graphic. The Havel-Hakimi algorithm constructs a special ...

  9. Coping - Wikipedia

    en.wikipedia.org/wiki/Coping

    Coping refers to conscious or unconscious strategies used to reduce and manage unpleasant emotions. Coping strategies can be cognitions or behaviors and can be individual or social. To cope is to deal with struggles and difficulties in life. [1] It is a way for people to maintain their mental and emotional well-being. [2]