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Topic: Babylonian number system

	Encyclopedia :: encyclopedia : 0 (number) (Site not responding. Last check: 2007-10-23)
		It was the last numeral to be created in most numerical systems, as it is not a counting number (which is to say, one begins counting at the number 1) and was in many eras and places represented only by a gap or mark very different from the other numerals.
		By 130, Ptolemy, influenced by Hipparchus and the Babylonians, was using a symbol for zero (a small circle with a long overbar) within a sexagesimal numeral system otherwise using alphabetic Greek numerals.
		In some signed number representations (but not the two's complement representation predominant today) and most floating point number representations, zero has two distinct representations, one grouping it with the positive numbers and one with the negatives; this latter representation is known as negative zero.
	www.hallencyclopedia.com /0_(number) (2664 words)

	Binary numeral system - Wikipedia, the free encyclopedia
		The modern binary number system was fully documented by Gottfried Leibniz in the 18th century in his article Explication de l'Arithmétique Binaire.
		A binary number can be represented by any sequence of bits (binary digits), which in turn may be represented by any mechanism capable of being in two mutually exclusive states.
		This is due to the fact that the radix of the hexadecimal system (16) is a power of the radix of the binary system (2).
	en.wikipedia.org /wiki/Binary_numeral_system (3143 words)

	Geometry.Net - Basic_Math: Number System
		Sumerian and Babylonian Numerals Chinese The Abacus Abacus in Various Number Systems The Chinese Calendar Chinese Numbers...
		Each place in a number can be treated in the same way so that learning how to add a large number is as simple as learning how to add one of its places or "carry" numbers when the sum of a place exceeds the maximum value that that place can hold.
		The number systems we are looking into are known as positional : each uses a fixed number of digits whose meaning depends on its position in a number representation.
	www5.geometry.net /basic_math/number_system.html (2102 words)

	Fibonacci (c.1175-1250)
		The son of a Pisan merchant who also served as a customs officer in North Africa, he traveled widely in Barbary (Algeria) and was later sent on business trips to Egypt, Syria, Greece, Sicily, and Provence.
		With these nine figures, and with this sign 0 which in Arabic is called zephirum, any number can be written, as will be demonstrated.
		+ 10x = 20 using the Babylonian number system with base 60 (a strange choice, in view of his public advocacy of the decimal system!).
	www.daviddarling.info /encyclopedia/F/Fibonacci.html (344 words)

	Science Timeline
		By 1500 bce, Babylonian mathematicians understood "the determination of the diagonal on the square from its side," that is to say, the 'Pythagorean theorem' (Neugebauer 1957:36).
		He also produced two major concepts in the history of ideas concerning the brain--that thought was situated there and, anticipating the nervous system, that psychic atoms constituted the material basis of its communication with the rest of the body and the world outside.
		In the first half of the seventh century, Brahmagupta regarded zero, the place holder in the base-10 number system as "an infinitissimal quantity which ultimately reduces to nought." For Hindus, "arithmetic and mensuration, rather than geometry and considerations of congruence, were fundamental" (Boyer 1949:62).
	www.sciencetimeline.net /prehistory.htm (6591 words)

	Timeline related to Greek Science and Technology 1/2
		He brings Babylonian mathematical knowledge to Greece and uses geometry to solve problems such as calculating the height of pyramids and the distance of ships from the shore.
		Consequently, when the Pythagoreans developed the theory of geometric magnitudes, by which they were able to compare two surfaces' ratio, they were led, for lack of a system which could handle irrational numbers, to the 'incommensurability problem': Applying the side of a square to the diagonal, no common rational measure is discoverable.
		First, raise the required number of torches in the first set of five to indicate the group to which a particular letter belongs.
	www.mlahanas.de /Greeks/HistoricEvents.htm (5200 words)

	Æ Indiana T. Zones and the Temple of Doom, The Message of the Covenant
		And the Levites were numbered from thirty years old and upward; and their number by their polls, man by man, was thirty and eight thousand.
		The Babylonian cubit was actually known as the kus and it was divided into the foot which was 2/3 of a cubit.
		In the case of the Babylonian cubit, it was enlarged from a cubit of 27 units to a cubit of 30 units so that it would harmonize with the Babylonian sexagesimal number system.
	www.aeragon.com /itz/05-temple-01.html (22183 words)

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