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Related to rational number: real number, irrational number

number

 [num´ber]
a symbol, as a figure or word, expressive of a certain value or a specified quantity determined by count.
atomic number (Z) a number expressive of the number of protons in an atomic nucleus, or the positive charge of the nucleus expressed in terms of the electronic charge.
Avogadro's number (N) (NA) the number of molecules in one mole of a substance: 6.023 × 1023. Called also Avogadro's constant.
CT number the density assigned to a voxel in a CAT scan on an arbitrary scale on which air has a density −1000; water, 0; and compact bone +1000. See also hounsfield unit.
mass number (A) the number of nucleons (protons plus neutrons) in the atom of a nuclide; generally indicated by a superscript preceding the symbol of a chemical element (e.g., 131I), denoting a specific isotope.
oxidation number a number assigned to each atom in a molecule or ion that represents the number of electrons theoretically gained (positive oxidation numbers) or lost (negative numbers) in converting the atom to the elemental form.

num·ber

(nŭm'bĕr),
1. A symbol expressive of a certain value or of a specific quantity determined by count.
2. The place of any unit in a series.

number

Drug slang
A regional term for marijuana cigarette (joint).

Vox populi
A symbol of a value.

number

Vox populi A symbol of a value. See Accession number, Burst number, CLIA number, Common account number, Copy number, ID number, Linkage number, Magic number, Mass number, Medicare Indentification number, IP number, MIM number, Primary accession number, Reynolds' number, Secondary accession number, Threshold number, UPIN number, Winding number, Writhe number.

num·ber

(nŭm'bĕr)
1. A symbol expressive of a certain value or of a specific quantity determined by count.
2. The place of any unit in a series.
[L. numero]

num·ber

(nŭm'bĕr)
1. A symbol expressive of a certain value or of a specific quantity determined by count.
2. The place of any unit in a series.
[L. numero]

Patient discussion about number

Q. what is a safe tumor marker number range?

A. depends on the marker...most of the markers are materials that found normally in our body. and there are a number of markers and their levels differentiate. what marker do you mean?

Q. What are the percentage of people dealing with breast cancer out of the number of people that are illness with cancer ? and what is the percentage of death cases out of sum of all cases of breast cases ? is there any difference between the amount of death cases from breast cancer and than the other kinds of cancer ?

A. here's a quote from the CDC site:
"Aside from non-melanoma skin cancer, breast cancer is the most common form of cancer in women. Breast cancer is the number one cause of cancer death in Hispanic women. It is the second most common cause of cancer death in white, black, Asian/Pacific Islander, and American Indian/Alaska Native women."

Q. i have heard that number of scientists found out in one of there researches that breasts Cancer is capable to just disappear with out a treatment , have any one read this article/research ? or maybe just heard about it ? because it is interesting why and how this result happens ...

A. hi pinkofdestiny - try also these links, i know and read a lot about the books of Phillip Day and recommend them to everybody. cancer can be healed and there are also ways to make with success prevention:

http://www.credencegroup.co.uk/Eclub/ses/sessearch.php?q=breast+cancer&pvdc=0

before a woman should loose her breast, she should make a therapy with vitamine B17 - the vitamin which can eliminate cancer in any form, but you should not know about it! it is terrible, but it is the way how politicians and industry-trust treat us.

More discussions about number
References in periodicals archive ?
Although student understanding was the initial focus of the research, other data was collected on the teacher candidates as well, since their own knowledge of fractions and rational numbers is key to the success of the students they will eventually teach.
But with a periodic expansion I can always recuperate the rational number which produces it and therefore I can calculate the length represented by it in an exact way.
Rational number meaning may not allow judgement of reasonable results.
The rational numbers [[t.sub.0]], [[t.sub.0], [t.sub.1]], [[t.sub.0], [t.sub.1], [t.sub.2]], ...
The second is that measurement deals in the first instance with rational numbers rather than reals.
However, the square root of 2.25 is a rational number and is a close approximation of 2.
(i) If there exists a rational number Y satisfying [Y.sup.2] = [n.sup.2] + 1, then we have [square root of v(v [+ or -] 1)] = (n [+ or -] 1)/(2n)Y [member of] Q; and hence, [M.sub.3] = Q.
In addition, any rational number can be represented as a finite continued fraction and any finite continued fraction represents a rational number [19].
Contributing to students' low performance was their weak understanding of and computation with rational numbers. This is not surprising because some studies have shown that students with disabilities score only 14.5% and 8.6% on measures assessing decimals and fractions, respectively, and their performance actually worsens in high school (Calhoon, Emerson, Flores, & Houchins, 2007).
The greatest common rational divisor of two positive rational numbers x and y, written GCRD(x, y) is the largest positive rational number r such that both x/r and y/r are positive integers.
In 1997, Goel and Robillard rebutted the Evans and Tirosh arguments; using a classic definition of [a.sup.r], where r is a rational number, it was shown that the quantity [(-8).sup.1/3] is a well-defined real number with the value -2.
iff P(x + a) [member of] P for some rational number a.