unitary number
Смотреть что такое "unitary number" в других словарях:
Unitary perfect number — A unitary perfect number is an integer which is the sum of its positive proper unitary divisors, not including the number itself. (A divisor d of a number n is a unitary divisor if d and n / d share no common factors.) Some perfect numbers are… … Wikipedia
Unitary divisor — In mathematics, a natural number a is a unitary divisor of a number b if a and frac{b}{a} are coprime, having no common factor other than 1. Thus, 5 is a unitary divisor of 60, because 5 and frac{60}{5}=12 have only 1 as a common factor, while 6… … Wikipedia
Unitary operator — For unitarity in physics, see unitarity (physics). In functional analysis, a branch of mathematics, a unitary operator (not to be confused with a unity operator) is a bounded linear operator U : H → H on a Hilbert space H… … Wikipedia
Unitary group — In mathematics, the unitary group of degree n , denoted U( n ), is the group of n times; n unitary matrices, with the group operation that of matrix multiplication. The unitary group is a subgroup of the general linear group GL( n , C).In the… … Wikipedia
Unitary executive theory — In American political and legal discourse, the unitary executive theory is a theory or doctrine of Constitutional interpretation that holds it is unconstitutional for Congress to create independent agencies, authorities, or other entities that… … Wikipedia
Unitary Psychosis — (from 1822) (See also Psychosis: Emergence.) At the biological level, the concept probably originates with Parisian physician Antoine Laurent Jessé Bayle (1799–1858) in his work on what was recognized much later as cerebral syphilis (it… … Historical dictionary of Psychiatry
80000 (number) — Number number = 80000 range = 10000 100000 cardinal = 80000 ordinal = th ordinal text = eighty thousandth factorization = 2^7 cdot 5^4 bin = 10011100010000000 oct = 234200 hex = 1388080,000 (eighty thousand) is the number that comes before 79,999 … Wikipedia
Projective unitary group — In mathematics, the projective unitary group PU( n ) is the quotient of the unitary group U( n ) by the right multiplication of its center, U(1), embedded as scalars.Abstractly, it is the isometry group of complex projective space, just as the… … Wikipedia
Prime number — Prime redirects here. For other uses, see Prime (disambiguation). A prime number (or a prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself. A natural number greater than 1 that is not a prime number is… … Wikipedia
Special unitary group — In mathematics, the special unitary group of degree n , denoted SU( n ), is the group of n times; n unitary matrices with determinant 1. The group operation is that of matrix multiplication. The special unitary group is a subgroup of the unitary… … Wikipedia
Perfect number — In number theory, a perfect number is a positive integer that is equal to the sum of its proper positive divisors, that is, the sum of its positive divisors excluding the number itself (also known as its aliquot sum). Equivalently, a perfect… … Wikipedia
