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Tally marks, also called hash marks, are a form of numeral used for counting. They can be thought of as a unary numeral system . They are most useful in counting or tallying ongoing results, such as the score in a game or sport, as no intermediate results need to be erased or discarded.
Counting Rod Numerals is a Unicode block containing traditional Chinese counting rod symbols, which mathematicians used for calculation in ancient China, Japan, Korea, and Vietnam.
Tally marks, Counting. Unary numbering is used as part of some data compression algorithms such as Golomb coding. It also forms the basis for the Peano axioms for formalizing arithmetic within mathematical logic. A form of unary notation called Church encoding is used to represent numbers within lambda calculus.
Radix, radix point, mixed radix, base (mathematics); Unary numeral system (base 1) . Tally marks – Numeral form used for counting; Binary numeral system (base 2); Negative base numeral system (base −2)
The use of tally marks in counting is an application of the unary numeral system. For example, using the tally mark | (๐ท), the number 3 is represented as |||. In East Asian cultures, the number 3 is represented as ไธ, a character drawn with three strokes. [6] (One and two are represented similarly.)
Counting rods (็ญญ) are small bars, typically 3–14 cm (1" to 6") long, that were used by mathematicians for calculation in ancient East Asia.They are placed either horizontally or vertically to represent any integer or rational number.
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