Prime number
A prime number (or a prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself. A natural number greater than 1 that is not a prime number is called a composite number. For example, 5 is prime because 1 and 5 are its only positive integer factors, whereas 6 is composite because it has the divisors 2 and 3 in addition to 1 and 6. The fundamental theorem of arithmetic establishes the central role of primes in number theory: any integer greater than 1 can be expressed as a product of primes that is unique up to ordering. The uniqueness in this theorem requires excluding 1 as a prime because one can include arbitrarily many instances of 1 in any factorization, e.g., 3, 1 · 3, 1 · 1 · 3, etc. are all valid factorizations of 3.
The property of being prime (or not) is called primality. A simple but slow method of verifying the primality of a given number n is known as trial division. It consists of testing whether n is a multiple of any integer between 2 and 
. Algorithms much more efficient than trial division have been devised to test the primality of large numbers. These include the Miller–Rabin primality test, which is fast but has a small probability of error, and the AKS primality test, which always produces the correct answer in polynomial time but is too slow to be practical. Particularly fast methods are available for numbers of special forms, such as Mersenne numbers. As of January 2016, the largest known prime number has 22,338,618 decimal digits.
Prime (liturgy)
Prime, or the First Hour, is a fixed time of prayer of the traditional Divine Office (Canonical Hours), said at the first hour of daylight (approximately 7:00 a.m.), between the morning Hour of Lauds and the 9 a.m. Hour of Terce. It is part of the Christian liturgies of Eastern Christianity, but in the Latin Rite it was suppressed by the liturgical reforms following the Second Vatican Council. However, clergy who have an obligation to celebrate the Liturgy of the Hours may still fulfil their obligation by using the Roman Breviary promulgated by Pope John XXIII in 1962, which contains the Hour of Prime. Like all the liturgical hours, except the Office of Readings, it consists primarily of Psalms. It is one of the Little Hours.
Name
The word "Prime" comes from Latin and refers to the first hour of daylight (i.e., dawn). Originally, in the West, Prime was called matitutina (hora), "morning hour". Later, in order to distinguish it from the nocturnal offices of Matins and Lauds, and to include it among hours of the day, it was called prima. The name is first met with in the Rule of St. Benedict. In the Antiphonary of Bangor it is called secunda.
HP Prime
The HP Prime is a graphing calculator manufactured by Hewlett-Packard (HP). It contains features common in smartphones, with a touchscreen and apps available to put onto it. There are two sides to the calculator, a numeric home screen and a computer algebra system (CAS) homescreen. The calculator can quickly switch between the two, unlike its competitors, which either have a CAS model or a non-CAS model. The CAS is based on the free and open-source Xcas/Giac 1.1.2 engine by Bernard Parisse, who was also the main developer of the CAS system integrated into the HP 49G and successors. The calculator has a 1500 mAh battery, which is expected to last up to 15 hours on a single charge. Prime emulator PC software is available as well.
It has also, for now (2015), taken the title for the world's smallest CAS calculator at 18,23×8,58 cm and is also the thinnest CAS calculator available currently, with a thickness of only 1.39 cm.
Exam Mode
The HP Prime has a novel feature called Exam Mode. This enables various features of the calculator (such as CAS functionality, user-created apps, notes, etc.) to be selectively disabled for a specific time, from 15 minutes to 8 hours. This can be done manually within the calculator's menus, or by using a computer with HP's connectivity software. LEDs on the top of the calculator blink to let the instructor see that the calculator is in this mode. Despite this feature, the Prime is still prohibited in many examinations, such as the US's ACT college-entry test. It is however starting to be accepted in other examinations, like those run by the Dutch CvTE, the Swiss IB, or Alberta (Canada) education authorities.
Square (album)
Square is a studio album by Canadian hip hop musician Buck 65. It was released on WEA in 2002. Though it consists of four tracks, each track consists of multiple songs.
It was nominated for the 2003 Juno Awards for Alternative Album of the Year and Album Design of the Year.
Reception
Rollie Pemberton of Pitchfork Media gave Square a 7.0 out of 10 and called it "a melodic mix of folk rock sensibility, smooth early 90s style production, clever lyrical observations and a relatively enjoyable train ride into the mental station of Halifax's best-known emcee." Meanwhile, Clay Jarvis of Stylus Magazine gave the album a grade of B+, saying, "Square is built solely out of his strengths: hazy introspection, sparse snare-and-kick beats and simple, dismal instrumental refrains."
Track listing
References
External links
4 Square (pinball)
4 Square is a pinball machine designed by Ed Krynski and produced by Gottlieb in 1971. 4 Square is an Electro-mechanical pinball machine and there were 2,200 units produced. 4 Square features 2 flippers, 3 pop bumpers, 2 slingshots and 8 standup targets. The maximum point score displayed is only 9,999 points.
References
Method (music)
In music, a method is a kind of textbook for a specified musical instrument or a selected problem of playing a certain instrument.
A method usually contains fingering charts or tablatures, etc., scales and numerous different exercises, sometimes also simple etudes, in different keys, in ascending order as to difficulty (= in methodical progression) or with a focus on isolated aspects like fluency, rhythm, dynamics, articulation and the like. Sometimes there are even recital pieces, also with accompaniment. Such methods differ from etude books in that they are meant as a linear course for a student to follow, with consistent guidance, whereas volumes of etudes are not as comprehensive.
As typical instrumental methods are meant to function as textbooks supporting an instrumental teacher (rather than to facilitate self-teaching), usually no basic or special playing techniques are covered in any depth. Detailed instructions in this respect are only found in special, autodidactical methods.
Method (app)
Method is a Toronto-based customer relationship management company.
Company history
The company was founded by Paul Jackson in 2010 as Method, a QuickBooks integration app. The app was developed by Alocet, Inc., located in Toronto, Canada. Later the company became known as Method:CRM, focusing on its customer relationship management (CRM) app, which was developed in order to create web forms for creating sales leads and to sync invoices, payments and estimates with QuickBooks. The app now also integrates QuickBooks Online and the Method app is designed using mobile architecture. In 2013 the company received $3 million in series A funding from a round led by Klass Capital.
Method:Donor
Method was the winner of a 2014 Intuit developer hackathon, for developing a CRM for non-profits to manage their donors more effectively. The work developed through the event and funds for first prize resulted in the Method:Donor app.
References
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