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The history of zero traces the evolution of one of mathematics' most revolutionary concepts, from its early use as a placeholder in ancient Babylonian and Mayan number systems to its formal development as a number in India, its transmission through Arab mathematicians to Europe, and its foundational role in modern algebra, calculus, and computer science. More Less
1770 BC
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In a papyrus written around 1770 BC, an Egyptian scribe recorded daily incomes and expenditures for the pharaoh's court, using the nfr hieroglyph to indicate cases where the amount of a foodstuff received was exactly equal to the amount disbursed — one of the earliest known symbolic representations of a zero-like concept.
1400 BC - 400 BC
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The Olmec civilization, which ended by the 4th century BC, occupied the heartland where many of the earliest Long Count calendar dates were later found, suggesting the region played a foundational role in the development of Mesoamerican positional notation involving zero.
Image source: Olmecs
400 BC
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Many of the earliest Long Count dates were found within the Olmec heartland. Although the Olmec civilization ended by the 4th century BC, several centuries before the earliest known Long Count dates, its cultural legacy is tied to the emergence of this zero-based calendar system.
Image source: Mesoamerican Long Count calendar
300 BC - 200 BC
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Pingala (c. 3rd or 2nd century BC), a Sanskrit prosody scholar, used binary sequences in the form of short and long syllables (the latter equal in length to two short syllables) to identify possible valid Sanskrit meters, a notation similar to Morse code and an early example of positional thinking.
Image source: Pingala
36 BC
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The earliest known Long Count dates, found within the former Olmec heartland, demonstrate the Maya use of zero as a positional placeholder in their vigesimal calendar system, one of the earliest independent inventions of zero in the world.
Image source: Maya civilization
400 BC
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The 4th century BC Chinese counting rods system enabled one to perform positional decimal calculations, as described in the Sūnzĭ Suànjīng, a text of unknown date estimated to be from the 1st to 5th centuries AD.
Image source: Counting rods
100 AD - 200 AD
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By the Han dynasty (2nd century AD), Chinese authors had been familiar with the idea of negative numbers and decimal fractions, as seen in The Nine Chapters on the Mathematical Art, demonstrating sophisticated numerical concepts that complemented positional calculation with counting rods.
Image source: The Nine Chapters on the Mathematical Art
100 AD - 200 AD
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By the Han dynasty (2nd century AD), Chinese authors had been familiar with negative numbers alongside decimal fractions, as seen in The Nine Chapters on the Mathematical Art, situating zero within a broader framework of signed quantities.
Image source: Negative number
300 AD - 500 AD
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The Sūnzĭ Suànjīng, of unknown date but estimated to be from the 1st to 5th centuries AD, describes how the 4th century BC Chinese counting rods system enabled one to perform positional decimal calculations, preserving knowledge of early positional arithmetic.
Image source: Sunzi Suanjing
425 AD - 468 AD
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As noted in the Xiahou Yang Suanjing (425–468 AD), to multiply or divide a number by 10, 100, 1000, or 10000, all one needs to do, with rods on the counting board, is to move them forwards or back by 1, 2, 3, or 4 places — reflecting an implicit use of place value and empty positions.
Image source: Xiahou Yang Suanjing
500 AD - 600 AD
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There are numerous copper plate inscriptions bearing the same small o symbol, some possibly dated to the 6th century, though their date or authenticity may be open to doubt. They represent early candidates for written zero symbols in India.
Image source: History of the Hindu–Arabic numeral system
799 AD - 1102 AD
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The Bodleian Library reported radiocarbon dating results for six folios from the Bakhshali manuscript, indicating that they came from different centuries, dating the manuscript to AD 799–1102. It contains one of the earliest known written uses of the zero symbol.
Image source: Bakhshali manuscript
1247 AD
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Qín Jiǔsháo's 1247 Mathematical Treatise in Nine Sections is the oldest surviving Chinese mathematical text using a round symbol '〇' for zero, marking a milestone in the explicit written representation of zero in China.
Image source: Qin Jiushao
1000 AD - 1099 AD
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The Hindu–Arabic numeral system (base 10), including zero, reached Western Europe in the 11th century via Al-Andalus, through Spanish Muslims, the Moors, together with knowledge of classical astronomy and instruments like the astrolabe.
Image source: Hindu–Arabic numeral system
1100 AD - 1199 AD
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Al-Khwārizmī's book on Hindu–Arabic reckoning was translated into Latin in the 12th century under the title Algoritmi de numero Indorum, spreading knowledge of positional decimal notation and zero throughout medieval Europe.
Image source: Al-Khwarizmi
1126 AD
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The 12th-century Latin translation of al-Khwārizmī's work, titled Algoritmi de numero Indorum, introduced European readers to Indian numbering methods, giving rise to the word 'algorithm' and the widespread teaching of zero-based arithmetic.
Image source: Algorithm
1170 AD - 1250 AD
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The Italian mathematician Fibonacci (c. 1170 – c. 1250), who grew up in North Africa, encountered the Hindu–Arabic numeral system there and is credited with introducing the decimal system to Europe through his writings.
Image source: Fibonacci sequence
1200 AD - 1230 AD
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In the early 1200s, Johannes de Sacrobosco wrote one of the most popular manuals on calculation using Hindu–Arabic numerals, helping to teach European scholars the use of zero and positional notation.
Image source: Johannes de Sacrobosco
1200 AD - 1299 AD
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From the 13th century, manuals on calculation (adding, multiplying, extracting roots, etc.) became common in Europe, where they were called algorismus after the Persian mathematician al-Khwārizmī, embedding zero-based computation in European practice.
Image source: Algorism
1202 AD
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Fibonacci used the term zephyrum for zero in his works, a name that evolved over time into 'zefiro' in Italian and ultimately contributed to the English word 'cipher' and the modern name 'zero'.
1488 AD
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Sacrobosco's popular calculation manual, written in the early 1200s, was one of the earliest scientific books to be printed, appearing in print in 1488 and further disseminating the Hindu–Arabic numerals and zero across Europe.
1500 AD - 1599 AD
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In the 16th century, Hindu–Arabic numerals became the predominant numerals used in Europe, displacing Roman numerals and cementing zero's role at the heart of European mathematics, commerce, and science.
1598 AD
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The earliest known use of zero as a loanword in English literature dates to 1598, marking the formal adoption of the word 'zero' into the English language from continental European usage.
Jan 1, 1904
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The Classic Mac OS epoch and Palm OS epoch begin the midnight before the first of January 1904, defining time zero for these computing systems and illustrating how zero serves as the reference point in modern technology.
1907 AD
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In everyday speech, zero is often pronounced as 'oh', as in the year 1907 being spoken as 'nineteen oh seven', showing how the digit blends linguistically with the letter O in common usage.
1947 AD
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For example, the area code 201 may be pronounced 'two oh one', illustrating how zero continues to be vocalized as 'oh' in telephone numbering and other technical contexts.
Jan 1, 1970
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The Unix epoch begins the midnight before the first of January 1970, establishing time zero for Unix systems. This convention remains the standard reference point for timestamps across much of modern computing.
Image source: Unix time
1971 AD
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The digit 0 with a dot in the center seems to have originated as an option on IBM 3270 displays and has continued with some modern computer typefaces such as Andalé Mono and in some airline reservation systems, distinguishing zero from the letter O.
Image source: Slashed zero
1990 AD
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The dotted zero that originated on IBM 3270 displays has continued in some modern computer typefaces such as Andalé Mono and in airline reservation systems, ensuring clear visual distinction between zero and the letter O in digital text.
Image source: Typeface
2017 AD
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The Bodleian Library reported radiocarbon dating results for six folios of the Bakhshali manuscript, finding they came from different centuries between AD 799 and 1102, confirming it as a key witness to the earliest written zeros.
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