In mathematics, a Hilbert- Schmidt operator, named for David Hilbert and Erhard Schmidt, is a bounded operator A on a Hilbert space H with finite Hilbert- Schmidt norm.
One can view certain classes of bounded operators as noncommutative analogue of classical sequence spaces, with trace-class operators as the noncommutative analogue of the sequence space l1(N).
The bracket⟨⋅,⋅⟩{\displaystyle\langle\cdot,\cdot\rangle} is the scalar product on the Hilbert space; the sum on the right hand side converges in the operator norm.
The product of two Hilbert- Schmidt operators has finite trace class norm; therefore, if A and B are two Hilbert- Schmidt operators, the Hilbert- Schmidt inner product can be defined as.
线性算子是最常见的算子。设U和V是域K上的向量空间。算子A:U→V被称为线性,如果.
The most common kind of operator encountered are linear operators. Let U and V be vector spaces over a field K. Operator A: U→ V is called linear if.
This work revealed that S4 and S5 are models of interior algebra, a proper extension of Boolean algebra originally designed to capture the properties of the interior and closure operators of topology.
The space Z(M) is the Hilbert space of the quantum theory and a physical theory, with a Hamiltonian H, will have a time evolution operator eitH or an"imaginary time" operator e- tH.
Prior created modern temporal logic, closely related to modal logic, in 1957 by adding modal operators and meaning"eventually" and"previously".
他用表示函数χ(y)简写ψ(x,y):无界μ算子--函数μy--经常定义于教科书中。
He designated the representing functions χ(y) rather than ψ( x, y): The unbounded μ operator- the function μy- is the one commonly defined in the texts.
A function f{\displaystyle f} is operator concave if- f{\displaystyle-f} is operator convex, i.e. the inequality above for f{\displaystyle f} is reversed.
它们算子加法下不是向量空间,例如,id和-id都是可逆的(双射),但它们的和为0,不可逆。
They do not form a vector space under the addition of operators, e.g. both id and-id are invertible(bijective), but their sum, 0, is not.
In mathematics, there are many kinds of inequalities involving matrices and linear operators on Hilbert spaces. This article covers some important operator inequalities connected with traces of matrices.[ 1][ 2][ 3][ 4].
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