Search results
Results from the WOW.Com Content Network
Such a number is algebraic and can be expressed as the sum of a rational number and the square root of a rational number. Constructible number: A number representing a length that can be constructed using a compass and straightedge. Constructible numbers form a subfield of the field of algebraic numbers, and include the quadratic surds.
This category represents all rational numbers, that is, those real numbers which can be represented in the form: ...where and are integers and is ...
In mathematics, "rational" is often used as a noun abbreviating "rational number". The adjective rational sometimes means that the coefficients are rational numbers. For example, a rational point is a point with rational coordinates (i.e., a point whose coordinates are rational numbers); a rational matrix is a matrix of rational numbers; a rational polynomial may be a polynomial with rational ...
A list of articles about numbers (not about numerals). Topics include powers of ten, notable integers, prime and cardinal numbers, and the myriad system.
A number is an abstract entity used to describe quantity. Familiar kinds of numbers include natural numbers , integers , rational numbers , real numbers , and complex numbers . See also: Wikipedia:WikiProject Numbers
Example: Let a and b be nonzero real numbers. Then the subgroup of the real numbers R generated by a is commensurable with the subgroup generated by b if and only if the real numbers a and b are commensurable, in the sense that a/b is rational. Thus the group-theoretic notion of commensurability generalizes the concept for real numbers.
Not all number systems can represent the same set of numbers; for example, Roman numerals cannot represent the number zero. Ideally, a numeral system will: Represent a useful set of numbers (e.g. all integers, or rational numbers) Give every number represented a unique representation (or at least a standard representation)
For sequences of rational numbers, the OEIS might split off the one sequence of rational numbers into two sequences, one of numerators and another one of denominators. If the third question gets a negative response, someone arguing the notability of the sequence needs to show that there is no way the OEIS would include this sequence as a result ...