Γ-convergence
In the calculus of variations, Γ-convergence (Gamma-convergence) is a notion of convergence for functionals. It was introduced by Ennio de Giorgi.
Definition
Let 
be a topological space and 
a sequence of functionals on . Then 
are said to 
-converge to the -limit 
if the following two conditions hold:
such that 
as 
,
, there is a sequence 
converging to 
such thatThe first condition means that 
provides an asymptotic common lower bound for the . The second condition means that this lower bound is optimal.
Properties
-converge to , and is a minimizer for , then every cluster point of the sequence is a minimizer of .-limits are always lower semicontinuous.-convergence is stable under continuous perturbations: If -converges to and 
is continuous, then 
will -converge to 
.
does not necessarily -converge to , but to the relaxation of , the largest lower semicontinuous functional below .Convergence (sustainability science)
Convergence in sustainability sciences refers to mechanisms and pathways that lead towards sustainability with a specific focus on 'Equity within biological planetary limits'. These pathways and mechanisms explicitly advocate equity and recognise the need for redistribution of the Earth's resources in order for human society to operate enduringly within the Earth's biophysical limits.
This use of the term 'convergence' harkens from the concept of contraction and convergence (C&C), taking its core principles of Equity and Survival and applying them beyond the frame of greenhouse gas emissions to the wider sustainability agenda.
References
External links
Convergence (routing)
Convergence is the state of a set of routers that have the same topological information about the internetwork in which they operate. For a set of routers to have converged, they must have collected all available topology information from each other via the implemented routing protocol, the information they gathered must not contradict any other router's topology information in the set, and it must reflect the real state of the network. In other words: In a converged network all routers "agree" on what the network topology looks like.
Convergence is an important notion for a set of routers that engage in dynamic routing. All Interior Gateway Protocols rely on convergence to function properly. To have converged it is the normal state of an operational autonomous system. The Exterior Gateway Routing Protocol BGP typically never converges because the Internet is too big for changes to be communicated fast enough.
Convergence process
When a routing protocol process is enabled, every participating router will attempt to exchange information about the topology of the network. The extent of this information exchange, the way it is sent and received, and the type of information required vary widely depending on the routing protocol in use, see e.g. RIP, OSPF, BGP4.
Zip
Zip, Zips or ZIP may refer to:
Computing
Arts and entertainment
Zip (airline)
Zip was a Canadian discount airline headquartered in Hangar 101 at Calgary International Airport, Calgary, Alberta. It was launched by Air Canada as a no-frills subsidiary in September 2002. It operated a fleet of 12 Boeing 737 aircraft, each painted in a bright, neon colour (blue, fuchsia, green, and orange) with a single class of service. The subsidiary was headed by former WestJet CEO, Steve Smith.
As a direct competition to Canada's leading low-cost carrier WestJet, Zip flew mostly between the western cities of Abbotsford, Calgary, Edmonton, Vancouver, Saskatoon, Regina and Winnipeg.
Zip ceased operations in September 2004 when Air Canada resumed a full schedule on its western routes.
Branding
Zip was known for branding its advertising with 3 character words. Among them, "yuk" was printed on the air sickness bags, "bag" was printed on the personal baggage tags, and "yum" was printed on the napkins distributed with beverages on board. Large print advertisements were erected in many cities, which simply said "fly" and the company's website below, 4321zip.com. Today, the website redirects to the official Air Canada website, along with other subsidiaries' websites.
Tom Prichard
Thomas "Dr. Tom" Prichard (born August 18, 1959) is an American professional wrestler and author. He is the brother of Chris and Bruce Prichard.
Career
Beginnings
Tom Prichard began his career in Los Angeles, around 1979, working for Gene and Mike LeBell's Los Angeles Olympic Auditorium wrestling promotion, where he held several championships in that organization, including the Americas tag team title with Chris Adams. After LeBell closed the L.A. promotion down in 1982, Prichard competed in various NWA territories for the next four years before settling in the southeast, where he had his greatest success of his career.
Continental Wrestling Federation and United States Wrestling Association
Prichard joined the Continental Wrestling Federation in the late 1980s, and feuded with "The Dirty White Boy" Tony Anthony. Their feud included a very controversial angle, which aired on April 23, 1988, where Anthony's valet came out with a black eye and begged Prichard to help her, only for Anthony to attack him from behind, cuff his hands behind his back, and hang him. On October 3, 1988 in Birmingham, Alabama, he defeated Anthony in the finals of a tournament to win the vacant CWF Heavyweight Championship. Prichard lost the title to Wendell Cooley on April 7, 1989 in Knoxville, Tennessee, but regained the belt on June 23 of that year. He lost the title to Dennis Condrey a month later on July 22 in Dothan, Alabama, before once again regaining it after defeating Condrey on December 6 of that same year. Prichard held the title until the CWF closed later that month.
Podcasts:
