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Start Over Subject conditional expectation

1. Centered weighted composition operators via measure theory

Creator:
Jabbarzadeh, Mohammad Reza and Jafari Bakhshkandi, Mehri
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Aluthge transform, Moore-Penrose inverse, weighted composition operator, conditional expectation, and centered operator
Language:
English
Description:
We describe the centered weighted composition operators on L 2 (Σ) in terms of their defining symbols. Our characterizations extend Embry-Wardrop-Lambert’s theorem on centered composition operators.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

2. Lambert multipliers between $L^p$ spaces

Creator:
Jabbarzadeh, M. R. and Sarbaz, S. Khalil
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
conditional expectation, multipliers, multiplication operators, and Fredholm operator
Language:
English
Description:
In this paper Lambert multipliers acting between $L^p$ spaces are characterized by using some properties of conditional expectation operator. Also, Fredholmness of corresponding bounded operators is investigated.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

3. The basic construction from the conditional expectation on the quantum double of a finite group

Creator:
Xin, Qiaoling, Jiang, Lining, and Ma, Zhenhua
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
matematika, mathematics, conditional expectation, basic construction, quantum double, quasi-basis, 13, and 51
Language:
English
Description:
Let G be a finite group and H a subgroup. Denote by D(G;H) (or D(G)) the crossed product of C(G) and \mathbb{C}H (or \mathbb{C}G) with respect to the adjoint action of the latter on the former. Consider the algebra \left \langle D(G), e\right \rangle generated by D(G) and e, where we regard E as an idempotent operator e on D(G) for a certain conditional expectation E of D(G) onto D(G; H). Let us call \left \langle D(G), e\right \rangle the basic construction from the conditional expectation E: D(G) → D(G; H). The paper constructs a crossed product algebra C(G/H ×G) \rtimes \mathbb{C}G, and proves that there is an algebra isomorphism between \left \langle D(G), e\right \rangle and C(G/H×G) \rtimes \mathbb{C} G., Qiaoling Xin, Lining Jiang, Zhenhua Ma., and Obsahuje seznam literatury
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public