On-Line Encyclopedia of Integer SequencesThe On-Line Encyclopedia of Integer Sequences (OEIS) is an online database of integer sequences. It was created and maintained by Neil Sloane while researching at AT&T Labs. He transferred the intellectual property and hosting of the OEIS to the OEIS Foundation in 2009. Sloane is the chairman of the OEIS Foundation. OEIS records information on integer sequences of interest to both professional and amateur mathematicians, and is widely cited. , it contains over 360,000 sequences, making it the largest database of its kind.
Linear algebraic groupIn mathematics, a linear algebraic group is a subgroup of the group of invertible matrices (under matrix multiplication) that is defined by polynomial equations. An example is the orthogonal group, defined by the relation where is the transpose of . Many Lie groups can be viewed as linear algebraic groups over the field of real or complex numbers. (For example, every compact Lie group can be regarded as a linear algebraic group over R (necessarily R-anisotropic and reductive), as can many noncompact groups such as the simple Lie group SL(n,R).
Micro Instrumentation and Telemetry SystemsMicro Instrumentation and Telemetry Systems (MITS) was an American electronics company founded in Albuquerque, New Mexico that began manufacturing electronic calculators in 1971 and personal computers in 1975. Ed Roberts and Forrest Mims founded MITS in December 1969 to produce miniaturized telemetry modules for model rockets such as a roll rate sensor. In 1971, Roberts redirected the company into the electronic calculator market and the MITS 816 desktop calculator kit was featured on the November 1971 cover of Popular Electronics.
Linear time-invariant systemIn system analysis, among other fields of study, a linear time-invariant (LTI) system is a system that produces an output signal from any input signal subject to the constraints of linearity and time-invariance; these terms are briefly defined below. These properties apply (exactly or approximately) to many important physical systems, in which case the response y(t) of the system to an arbitrary input x(t) can be found directly using convolution: y(t) = (x ∗ h)(t) where h(t) is called the system's impulse response and ∗ represents convolution (not to be confused with multiplication).
Mid-ocean ridgeA mid-ocean ridge (MOR) is a seafloor mountain system formed by plate tectonics. It typically has a depth of about and rises about above the deepest portion of an ocean basin. This feature is where seafloor spreading takes place along a divergent plate boundary. The rate of seafloor spreading determines the morphology of the crest of the mid-ocean ridge and its width in an ocean basin. The production of new seafloor and oceanic lithosphere results from mantle upwelling in response to plate separation.
Type II supernovaA Type II supernova (plural: supernovae or supernovas) results from the rapid collapse and violent explosion of a massive star. A star must have at least eight times, but no more than 40 to 50 times, the mass of the Sun () to undergo this type of explosion. Type II supernovae are distinguished from other types of supernovae by the presence of hydrogen in their spectra. They are usually observed in the spiral arms of galaxies and in H II regions, but not in elliptical galaxies; those are generally composed of older, low-mass stars, with few of the young, very massive stars necessary to cause a supernova.
Kuala LumpurKuala Lumpur (ˈkualə, -a ˈlumpo(r), -ʊ(r)), officially the Federal Territory of Kuala Lumpur (Wilayah Persekutuan Kuala Lumpur) and colloquially referred to as KL, is a federal territory and the ceremonial, legislative and judicial capital city of Malaysia. It is one of the fastest-growing cities in Asia and the largest city in Malaysia, covering an area of with a census population of 1,982,112 . Greater Kuala Lumpur, also known as the Klang Valley, is an urban agglomeration of 7.564 million people .
XXXXVIII Panzer CorpsXXXXVIII Panzer Corps (also: XXXXVIII Army Corp or XXXXVIII. Armeekorps), was a corps-level formation of the German Army which saw extensive action on both the Eastern and Western Fronts during World War II. The corps was originally formed on 15 December 1940 in Germany. At the dawn of Operation Barbarossa, on 22 June 1941, it was redesignated as the XXXXVIII Panzer Corps. The Corps was attached to Field Marshal Ewald von Kleist's Panzer Group 1, a part of Army Group South.
Robert Whitehead (theatre producer)Robert Whitehead (March 3, 1916 – June 15, 2002) was a Canadian theatre producer. His first production was Medea, starring Judith Anderson and John Gielgud, and he won the Outer Critics Circle Award five times. He was nominated for 19 Tony and Drama Desk Awards, winning 4 Tony Awards and 5 Drama Desk Awards. His father owned textile mills, and his mother, Selena Mary LaBatt Whitehead, was an opera singer. (The actor Hume Cronyn was Whitehead's cousin on the LaBatt side.
Taboo (2002 TV series)Taboo is a documentary television series that premiered in 2002 on the National Geographic Channel. The program is an educational look into "taboo" rituals and traditions practiced in some societies, yet forbidden and/or illegal in others. Each hour-long episode details a specific topic, such as marriage or initiation rituals, and explores how such topics are viewed throughout the world. Taboo generally focuses on the most misunderstood, despised, or disagreed-upon activities, jobs, and roles.
International System of UnitsThe International System of Units, internationally known by the abbreviation SI (for Système International), is the modern form of the metric system and the world's most widely used system of measurement. Established and maintained by the General Conference on Weights and Measures (CGPM), it is the only system of measurement with an official status in nearly every country in the world, employed in science, technology, industry, and everyday commerce.
President's House (Naval War College)The President's House (also known as Quarters AA) is the home of the President of the Naval War College in Newport, Rhode Island. The house is a wooden, three-story building in Colonial Revival style located on a hill on Coaster's Harbor Island, overlooking Coaster's Harbor, Dewey Field, and Narragansett Bay. The house was built in 1896 by local Newport, Rhode Island, architect and builder Creighton Withers at the cost of $16,226.
