.co

.co is the Internet country code top-level domain (ccTLD) assigned to Colombia. It is administered by .CO Internet S.A.S.As of July 10, 2010, there are no registration restrictions on second-level .co domains; any individual or entity in the world can register a .co domain.

.co has become increasingly popular among tech startups. The .co domain is also used by many established brands for social and mobile media, such as Twitter (t.co), Google Inc. (g.co), Amazon.com (a.co), American Express (amex.co) and Starbucks (sbux.co).

.co domain names are available for registration globally through accredited registrars.

.CO Internet S.A.S from Bogotá, Colombia, was appointed as the manager for the .co TLD through a public procurement process that took place in early 2009. .CO Internet received the re-delegation approval as the manager of the .co TLD by ICANN on December 9, 2009, and received formal confirmation of the request by the United States Department of Commerce on December 23, 2009.

Second-level domain names

Satiric misspelling

A satiric misspelling is an intentional misspelling of a word, phrase or name for a rhetorical purpose. This is often done by replacing a letter with another letter (for example, k replacing c), or symbol (for example, $ replacing s, @ replacing a, or ¢ replacing c). Satiric misspelling is found particularly in informal writing on the Internet, but can also be found in some serious political writing that opposes the status quo.

K replacing c

Replacing the letter c with k in the first letter of a word came into use by the Ku Klux Klan during its early years in the mid-to-late 19th century. The concept is continued today within the group.

In the 1960s and early 1970s in the United States, leftists, particularly the Yippies, sometimes used Amerika rather than America in referring to the United States. It is still used as a political statement today. It is likely that this was originally an allusion to the German spelling of the word, and intended to be suggestive of Nazism, a hypothesis that the Oxford English Dictionary supports.

Cofunction

In mathematics, a function f is cofunction of a function g if f(A) = g(B) whenever A and B are complementary angles. This definition typically applies to trigonometric functions.

For example, sine and cosine are cofunctions of each other (hence the "co" in "cosine"):

The same is true of secant and cosecant and of tangent and cotangent:

These equations are also known as the cofunction identities.

This also holds true for the coversine (coversed sine, cvs), covercosine (coversed cosine, cvc), hacoversine (half-coversed sine, hcv), hacovercosine (half-coversed cosine, hcc) and excosecant (exterior cosecant, exc):

See also

References