collage42 -Pia-Vittoria
Pi Day- 3,14 Day
Pi Day is an annual celebration of the mathematical constant π (pi). Pi Day is observed on March 14 (3/14 in the month/day format) since 3, 1, and 4 are the first three significant digits of π.
It was founded in 1988 by Larry Shaw, an employee of the Exploratorium. Celebrations often involve eating pie or holding pi recitation competitions. In 2009, the United States House of Representatives supported the designation of Pi Day. UNESCO's 40th General Conference designated Pi Day as the International Day of Mathematics in November 2019.
The number π is a mathematical constant. It is defined as the ratio of a circle's circumference to its diameter, and it also has various equivalent definitions. It appears in many formulas in all areas of mathematics and physics and the earliest known use of the Greek letter π to represent the ratio of a circle's circumference to its diameter was by Welsh mathematician William Jones in 1706. It is approximately equal to 3.14159. It has been represented by the Greek letter "π" since the mid-18th century, and is spelled out as "pi". It is also referred to as Archimedes' constant
Being an irrational number, π cannot be expressed as a common fraction, although fractions such as 22/7 are commonly used to approximate it. Equivalently, its decimal representation never ends and never settles into a permanently repeating pattern. Its decimal (or other base) digits appear to be randomly distributed, and are conjectured to satisfy a specific kind of statistical randomness.
It is known that π is a transcendental number: it is not the root of any polynomial with rational coefficients. The transcendence of π implies that it is impossible to solve the ancient challenge of squaring the circle with a compass and straightedge.
Ancient civilizations, including the Egyptians and Babylonians, required fairly accurate approximations of π for practical computations. Around 250 BC, the Greek mathematician Archimedes created an algorithm to approximate π with arbitrary accuracy. In the 5th century AD, Chinese mathematics approximated π to seven digits, while Indian mathematics made a five-digit approximation, both using geometrical techniques. The first exact formula for π, based on infinite series, was discovered a millennium later, when in the 14th century the Madhava–Leibniz series was discovered in Indian mathematics.
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Il 14 marzo (o 3,14) è il giorno del Pi greco: una festa per chi ama la matematica
Il simbolo che conosciamo fu usato per la prima volta circa 250 anni fa, dal matematico gallese William Jones nel trattato A New Introduction to Mathematics (1706). π è l'iniziale dei termini greci περιφέρεια, "periferia", e περίμετρος, "perimetro", con riferimento alla circonferenza; ma anche del filosofo e matematico Pitagora. Prima di allora per riferirsi alla costante si ricorreva a complesse perifrasi come: "la quantità che quando si moltiplica per il diametro, dà la circonferenza".
IL CALCOLO DEI SUOI DECIMALI HA FATTO IMPAZZIRE INTERE GENERAZIONI. π è irrazionale, cioè non esprimibile come una frazione di due numeri interi: le 100 cifre riportate qui sopra sono insomma uno sforzo contenuto, rispetto a un numero che procede in apparenza all'infinito. Il record attuale di decimali verificati è di 22.459.157.718.361, frutto del lavoro di un centinaio di giorni di un supercomputer svizzero.
Pi Day- 3,14 Day
Pi Day is an annual celebration of the mathematical constant π (pi). Pi Day is observed on March 14 (3/14 in the month/day format) since 3, 1, and 4 are the first three significant digits of π.
It was founded in 1988 by Larry Shaw, an employee of the Exploratorium. Celebrations often involve eating pie or holding pi recitation competitions. In 2009, the United States House of Representatives supported the designation of Pi Day. UNESCO's 40th General Conference designated Pi Day as the International Day of Mathematics in November 2019.
The number π is a mathematical constant. It is defined as the ratio of a circle's circumference to its diameter, and it also has various equivalent definitions. It appears in many formulas in all areas of mathematics and physics and the earliest known use of the Greek letter π to represent the ratio of a circle's circumference to its diameter was by Welsh mathematician William Jones in 1706. It is approximately equal to 3.14159. It has been represented by the Greek letter "π" since the mid-18th century, and is spelled out as "pi". It is also referred to as Archimedes' constant
Being an irrational number, π cannot be expressed as a common fraction, although fractions such as 22/7 are commonly used to approximate it. Equivalently, its decimal representation never ends and never settles into a permanently repeating pattern. Its decimal (or other base) digits appear to be randomly distributed, and are conjectured to satisfy a specific kind of statistical randomness.
It is known that π is a transcendental number: it is not the root of any polynomial with rational coefficients. The transcendence of π implies that it is impossible to solve the ancient challenge of squaring the circle with a compass and straightedge.
Ancient civilizations, including the Egyptians and Babylonians, required fairly accurate approximations of π for practical computations. Around 250 BC, the Greek mathematician Archimedes created an algorithm to approximate π with arbitrary accuracy. In the 5th century AD, Chinese mathematics approximated π to seven digits, while Indian mathematics made a five-digit approximation, both using geometrical techniques. The first exact formula for π, based on infinite series, was discovered a millennium later, when in the 14th century the Madhava–Leibniz series was discovered in Indian mathematics.
---------------------------------
Il 14 marzo (o 3,14) è il giorno del Pi greco: una festa per chi ama la matematica
Il simbolo che conosciamo fu usato per la prima volta circa 250 anni fa, dal matematico gallese William Jones nel trattato A New Introduction to Mathematics (1706). π è l'iniziale dei termini greci περιφέρεια, "periferia", e περίμετρος, "perimetro", con riferimento alla circonferenza; ma anche del filosofo e matematico Pitagora. Prima di allora per riferirsi alla costante si ricorreva a complesse perifrasi come: "la quantità che quando si moltiplica per il diametro, dà la circonferenza".
IL CALCOLO DEI SUOI DECIMALI HA FATTO IMPAZZIRE INTERE GENERAZIONI. π è irrazionale, cioè non esprimibile come una frazione di due numeri interi: le 100 cifre riportate qui sopra sono insomma uno sforzo contenuto, rispetto a un numero che procede in apparenza all'infinito. Il record attuale di decimali verificati è di 22.459.157.718.361, frutto del lavoro di un centinaio di giorni di un supercomputer svizzero.