ExpertGlossary

Identifier that is immutable and unique across time and space.

Universal restrictions are given the symbol ∀. They constrain the relationships along a given property to individuals that are members of a specific class. For example the universal restriction ∀ hasTopping MozzarellaTopping describes the individuals all of whose hasTopping relationships are to members of the class MozzarellaTopping - the individuals do not have a hasTopping relationships to individuals that aren't members of the class MozzarellaTopping.

Universal restrictions are also know as All Restrictions.

For a given property, universal restrictions do not specify the existence of a relationship. They merely state that if a relationship exists for the property then it must be to individuals that are members of a specific class.

Sun Microsystems - Cite This Source - This Definition

By international agreement, the local time at the prime meridian, which passes through Greenwich, England. Prior to 1972, this time was called Greenwich Mean Time (GMT) but is now referred to as Coordinated Universal Time or Universal Time Coordinated (UTC). It is a coordinated time scale, maintained by the Bureau International des Poids et Mesures (BIPM). It is also known a "Z time" or "Zulu Time".

More about UTC, and a table to convert UTC to your local time is posted at: http://www.srh.noaa.gov/srh/jetstream/doppler/radarfaq.htm#utc

In the world of investments, the word universe refers to a specific group or category of investments that share certain characteristics.

A universe might be the stocks that are included in a particular index, the stocks evaluated by a particular analytical service, or all of the stocks in a particular industry.

A very large and constantly evolving language with several alternative and largely incompatible syntaxes, in which anyone can define anything any way they choose, and usually do. Speakers of this language think it's easy to learn because it's so easily twisted to one's own ends, but dialectical differences make tribal intercommunication nearly impossible, and travelers are often reduced to a pidgin-like subset of the language. To be universally understood, a Unix shell programmer must spend years of study in the art. Many have abandoned this discipline and now communicate via an Esperanto-like language called Perl.

In ancient times, Unix was also used to refer to some code that a couple of people at Bell Labs wrote to make use of a PDP-7 computer that wasn't doing much of anything else at the time.

A security, such as a stock, is unlisted when it does not meet the listing requirements or pay the listing fee of any of the organized exchanges or markets.

Unlisted stock may be traded over-the-counter (OTC), however, and its price and volume may be tracked in the Pink Sheets or on the OTC Bulletin Board (OTCBB).

In most cases, unlisted stocks are thinly traded because they do not get much attention from the media or financial analysts, and are judged too risky for many investors.