Elementary mathematics | Coding theory | Numeral systems | Formal languages

Unary numeral system

The unary numeral system is the simplest numeral system to represent natural numbers: to represent a number N, a symbol representing 1 is repeated N times. In the unary system, the number 0 (zero) is represented by the empty string, that is, the absence of a symbol. Numbers 1, 2, 3, 4, 5, 6, ... are represented in unary as 1, 11, 111, 1111, 11111, 111111, ... Unary is a bijective numeral system. However, because the value of a digit does not depend on its position, it is not a form of positional notation, and it is unclear whether it would be appropriate to say that it has a base (or "radix") of 1, as it behaves differently from all other bases. The use of tally marks in counting is an application of the unary numeral system. For example, using the tally mark | (𝍷), the number 3 is represented as |||. In East Asian cultures, the number 3 is represented as 三, a character drawn with three strokes. (One and two are represented similarly.) In China and Japan, the character 正, drawn with 5 strokes, is sometimes used to represent 5 as a tally. Unary numbers should be distinguished from repunits, which are also written as sequences of ones but have their usual decimal numerical interpretation. (Wikipedia).

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From playlist Math Mini

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Roman Numerals

This lesson explains how to determine numbers when written using Roman numerals and how to write numbers using Roman numerals. Site: http://mathispower4u.com

From playlist Roman Numerals

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This video explains how to determine the number when it is written using Roman numerals. Site: http://mathispower4u.com

From playlist Roman Numerals

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Ex: Write Numbers as Roman Numerals

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From playlist Roman Numerals

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From playlist Data Science - Learn to code for beginners

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From playlist polymathematic #shorts

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From playlist Knowing our Numbers Class 06

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From playlist Quantum Numerical Linear Algebra - Jan. 24 - 27, 2022

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Related pages

Hamming weight | Binary number | Integer factorization | 0 | Decision problem | Church encoding | Lambda calculus | Tally marks | Bijective numeration | Peano axioms | Multiplication | P-complete | Natural number | Addition | Theory of computation | Turing machine | Subtraction | Repunit | Radix | Mathematical logic | Decimal | Positional notation | Computational complexity theory | Unary coding | Empty string