Exchange (album)

Exchange is a split album by the ska punk band Against All Authority and the punk rock band, The Criminals. It was first released in 1999 on Sub City Records.

Track listing

Against All Authority

The Criminals

Exchange (song)

"Exchange" is a song by American singer Bryson Tiller. It was released on September 21, 2015, as the second single from his debut album Trapsoul.

Chart performance

"Exchange" debuted on the Billboard Hot 100 at number 98 for the chart dated November 14, 2015, and has since peaked at number 39 where it became Tiller's second top 40 hit.

Charts

References

External links

Market economy

A market economy is an economy in which decisions regarding investment, production, and distribution are based on supply and demand, and prices of goods and services are determined in a free price system. The major defining characteristic of a market economy is that investment decisions and the allocation of producer goods are mainly made by negotiation through markets. This is contrasted with a planned economy, where investment and production decisions are embodied in a plan of production.

Market economies can range from hypothetical laissez-faire and free market variants to regulated markets and interventionist variants. In reality, market economies do not exist in pure form, since societies and governments regulate them to varying degrees. Different perspectives exist as to how strong a role the government should have in both guiding the market economy and addressing the inequalities the market produces. Most existing market economies include a degree of economic planning or state-directed activity, and are thus classified as mixed economies. The term free-market economy is sometimes used synonymously with market economy, but it may also refer to laissez-faire or free-market anarchism.

Crypto-1

Crypto1 is a proprietary encryption algorithm created by NXP Semiconductors specifically for Mifare RFID tags, including Oyster card, CharlieCard and OV-chipkaart.

Recent cryptographic research has shown that, "the security of this cipher is ... close to zero". Crypto1 is a stream cipher very similar in its structure to its successor, Hitag2. Crypto1 consists of

It can operate as an NLFSR and as an LFSR, depending on its input parameters. Outputs of one or both linear and nonlinear functions can be fed back into the cipher state or used as its output filters. The usual operation of Crypto1 and Hitag2 ciphers uses nonlinear feedback only during the initialization/authentication stage, switching to operation as LFSR with a nonlinear output filter for encrypting the tag's communications in both directions.

Space (Modern Jazz Quartet album)

Space is an album by American jazz group the Modern Jazz Quartet featuring performances recorded in 1969 and released on the Apple label.

Reception

The Allmusic review stated "Overall this is an average but worthy outing from a group whose excellence could always be taken for granted".

Track listing

All compositions by John Lewis, except where noted.

Personnel

References

Space (punctuation)

In writing, a space ( ) is a blank area devoid of content, serving to separate words, letters, numbers, and punctuation. Conventions for interword and intersentence spaces vary among languages, and in some cases the spacing rules are quite complex. In the classical period, Latin was written with interpuncts (centred dots) as word separators, but that practice was abandoned sometime around 200 CE in favour of scriptio continua, i.e., with the words running together without any word separators. In around 600–800 CE, blank spaces started being inserted between words in Latin, and that practice carried over to all languages using the Latin alphabet (including English and most other Western European languages).

In typesetting, spaces have historically been of multiple lengths with particular space-lengths being used for specific typographic purposes, such as separating words or separating sentences or separating punctuation from words. Following the invention of the typewriter and the subsequent overlap of designer style-preferences and computer-technology limitations, much of this reader-centric variation was lost in normal use.

Space (mathematics)

In mathematics, a space is a set (sometimes called a universe) with some added structure.

Mathematical spaces often form a hierarchy, i.e., one space may inherit all the characteristics of a parent space. For instance, all inner product spaces are also normed vector spaces, because the inner product induces a norm on the inner product space such that:

where the norm is indicated by enclosing in double vertical lines, and the inner product is indicated enclosing in by angle brackets.

Modern mathematics treats "space" quite differently compared to classical mathematics.

History

Before the golden age of geometry

In the ancient mathematics, "space" was a geometric abstraction of the three-dimensional space observed in the everyday life. Axiomatic method had been the main research tool since Euclid (about 300 BC). The method of coordinates (analytic geometry) was adopted by René Descartes in 1637. At that time, geometric theorems were treated as an absolute objective truth knowable through intuition and reason, similar to objects of natural science; and axioms were treated as obvious implications of definitions.