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:

Direct (Tower of Power album)

Direct is a 1981 live in-studio album by Tower of Power. It was their only album for the direct-to-disc record label Sheffield Lab. It also marked the return of original guitarist Willie James Fulton, not heard from since 1972's Bump City, and the last album to feature saxophonist Lenny Pickett. Mark Sanders plays drums on this album. Between this album and their 1987 comeback album Power they would record the sessions that later became the Dinosaur Tracks CD. Besides that, save for the original single release of "Simple As That" (from the same Dinosaur Tracks sessions), this would be their last new release until 1987. It contained mostly songs from their previous albums but included new stuff as well.

Direct would later be released with alternate takes on CD as Direct PLUS in 1997.

Track listing

Side One

DIRECT

DIRECT was a late-2000s proposed alternative heavy lift launch vehicle architecture supporting NASA's Vision for Space Exploration, which would replace the space agency's planned Ares I and Ares V rockets with a family of Shuttle-Derived Launch Vehicles named "Jupiter".

DIRECT was advocated by a group of space enthusiasts who asserted that they represented a broader team of dozens of NASA and space industry engineers who actively worked on the proposal on an anonymous, voluntary basis in their spare time. September 2008, the DIRECT Team was said to consist of 69 members, 62 of whom were NASA engineers, NASA-contractor engineers, and managers from the Constellation Program. A small number of non-NASA members of the team publicly represented the group.

The project name "DIRECT" referred to a philosophy of maximizing the re-use of hardware and facilities already in place for the Space Shuttle program (STS), hence a "direct" transition. The DIRECT Team asserted that using this approach to develop and operate a family of high-commonality rockets would reduce costs and the gap between retirement of the Space Shuttle and the first launch of Orion, shorten schedules, and simplify technical requirements for future US human space efforts.

Direct 8

Direct 8 was a national French TV channel, owned by Vincent Bolloré. It was available through digital terrestrial television network "TNT" and the Astra 1H satellite position.

As the name suggests ('direct' is French for 'live'), Direct 8 was originally intended to broadcast live shows only (except during night times and holiday seasons). This is no longer the case.

Following its purchase by Canal Group, the channel closed down on 7 October 2012 and relaunched as D8.

See also

Television portal

References

External links