Book

A book is a set of written, printed, illustrated, or blank sheets, made of ink, paper, parchment, or other materials, fastened together to hinge at one side. A single sheet within a book is a leaf, and each side of a leaf is a page. A set of text-filled or illustrated pages produced in electronic format is known as an electronic book, or e-book.

Books may also refer to works of literature, or a main division of such a work. In library and information science, a book is called a monograph, to distinguish it from serial periodicals such as magazines, journals or newspapers. The body of all written works including books is literature. In novels and sometimes other types of books (for example, biographies), a book may be divided into several large sections, also called books (Book 1, Book 2, Book 3, and so on). An avid reader of books is a bibliophile or colloquially, bookworm.

A shop where books are bought and sold is a bookshop or bookstore. Books can also be borrowed from libraries. Google has estimated that as of 2010, approximately 130,000,000 unique titles had been published. In some wealthier nations, printed books are giving way to the usage of electronic or e-books, though sales of e-books declined in the first half of 2015.

Book (graph theory)

In graph theory, a book graph (often written  ) may be any of several kinds of graph.

One kind, which may be called a quadrilateral book, consists of p quadrilaterals sharing a common edge (known as the "spine" or "base" of the book). A book of this type is the Cartesian product of a star and K₂ .

A second type, which might be called a triangular book, is the complete tripartite graph K_1,1,p. It is a graph consisting of triangles sharing a common edge. A book of this type is a split graph. This graph has also been called a .

Given a graph , one may write for the largest book (of the kind being considered) contained within .

The term "book-graph" has been employed for other uses. Barioli used it to mean a graph composed of a number of arbitrary subgraphs having two vertices in common. (Barioli did not write for his book-graph.)

Theorems on books

Denote the Ramsey number of two (triangular) books by

If , then (proved by Rousseau and Sheehan).

There exists a constant such that whenever .

Book (disambiguation)

A book is a set or collection of written, printed, illustrated, or blank sheets, made of paper, parchment, or other material, usually fastened together to hinge at one side.

Book or Books may also refer to:

Disturbed (Numbers)

"Disturbed" is the 21st episode of the fifth season of the American television show Numb3rs. In the episode written by series creators/executive producers Cheryl Heuton and Nicolas Falacci, skeptical Federal Bureau of Investigation (FBI) agents track an undetected serial killer while their math consultant copes with his brother's recent injury. After FBI Special Agent Don Eppes's (Rob Morrow) injury, FBI Special Agent David Sinclair (Alimi Ballard), who was the newest member of the team at the beginning of the series, served as team leader. Falacci and Heuton also included Easter eggs from the "Pilot" and from some of the previous 99 episodes.

The producers brought back one previous guest star and almost had a special guest star. For the 100th episode, series producers brought back Josh Gad, who amazed producers in a previous episode. Dr. Stephen Hawking, who visited the set during filming, almost became a guest star in the episode.

"Disturbed" first aired in the United States on May 1, 2009. Critics generally liked the episode.

Disturbed (film)

Disturbed is a 1990 American horror film directed by Charles Winkler starring Malcolm McDowell as a psychiatrist who rapes a young woman in his care, then must deal with her vengeance-seeking daughter 10 years later.

Plot

Dr. Derrick Russell (Malcolm McDowell) rapes one of the patients in his care. When she throws herself from the roof shortly afterward, he describes her suicide as a consequence of her depression. Ten years later, he plans to rape another patient, Sandy Ramirez (Pamela Gidley). What Russell does not know is that Sandy is the daughter of his previous victim, and that she is bent on revenge. A post-credit sequence depicts a man kissing the camera before he laughs.

Cast

References

External links