TY  - JOUR
ID  - Ivanova2023
LB  - Ivanova2023
AU  - Ivanova, Gertruda
AU  - Wagner-Bojakowska, Elżbieta
AU  - Wilczyński, Władysław
TI  - Lower density operators. Φ<sub>f</sub> versus Φ<sub>d</sub>
ST  - Lower density operators. Φ<sub>f</sub> versus Φ<sub>d</sub>
JO  - Opuscula Math.
JA  - Opuscula Math.
JF  - Opuscula Mathematica
PY  - 2023
VL  - 43
IS  - 2
SP  - 185
EP  - 197
DO  - https://doi.org/10.7494/OpMath.2023.43.2.185
UR  - https://doi.org/10.7494/OpMath.2023.43.2.185
AB  - Using the new method of the construction of lower density operator introduced in the earlier paper of the first two authors, we study how much the new operator can be different from the classical one. The aim of this paper is to show that if \(f\) is a good adjusted measure-preserving bijection then the lower density operator generated by \(f\) can be really different from the classical density operator.
KW  - lower density operator
KW  - measure-preserving bijection
SN  - 1232-9274
ER  -