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Radical 80 or radical do not (毋部) meaning "mother" or "do not" is one of the 34 Kangxi radicals (214 radicals in total) composed of 4 strokes. Chinese characters with a similar component 母 "mother" may also be classified under this radical. In the Kangxi Dictionary, there are 16 characters (out of 49,030) to be found under this radical.
Pages in category "Simplified Chinese radicals" ... Radical 80; Radical 113; Radical 99; Radical 112; Radical 109; Radical 102; Radical 122; Radical 108; Radical 100 ...
In number theory, the radical of a positive integer n is defined as the product of the distinct prime numbers dividing n. Each prime factor of n occurs exactly once as a factor of this product: r a d ( n ) = ∏ p ∣ n p prime p {\displaystyle \displaystyle \mathrm {rad} (n)=\prod _{\scriptstyle p\mid n \atop p{\text{ prime}}}p}
A solution in radicals or algebraic solution is an expression of a solution of a polynomial equation that is algebraic, that is, relies only on addition, subtraction, multiplication, division, raising to integer powers, and extraction of n th roots (square roots, cube roots, etc.).
Simplifying radical expressions involving nested radicals can be quite difficult. In particular, denesting is not always possible, and when possible, it may involve advanced Galois theory . Moreover, when complete denesting is impossible, there is no general canonical form such that the equality of two numbers can be tested by simply looking at ...
In the case of two nested square roots, the following theorem completely solves the problem of denesting. [2]If a and c are rational numbers and c is not the square of a rational number, there are two rational numbers x and y such that + = if and only if is the square of a rational number d.
In the Kangxi Dictionary there are 1902 characters (out of 40,000) found under this radical, making it the most commonly used radical. 艹, the upper component form of 艸, is the 30th indexing component in the Table of Indexing Chinese Character Components predominantly adopted by Simplified Chinese dictionaries published in mainland China ...
This form is used in modern Simplified Chinese (Mainland China, Singapore, Malaysia) and also in Traditional Chinese publications in mainland China. A more ancient form of this radical character is 人 inside the frame, from which the "orthodox" form found in the Kangxi Dictionary and the xin zixing form is derived. Both derived forms along ...