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Number of items: **5**.

Tarcsay, Zsigmond and Titkos, Tamás:
*Quasi-units as orthogonal projections.*
Acta scientiarum mathematicarum, (84) 3-4.
pp. 413-430. (2018)

Sebestyén, Zoltán and Tarcsay, Zsigmond:
*Adjoint of sums and products of operators in Hilbert spaces.*
Acta scientiarum mathematicarum, (82) 1-2.
pp. 175-191. (2016)

Sebestyén, Zoltán and Tarcsay, Zsigmond and Neumann, János:
*A reversed von Neumann theorem.*
Acta scientiarum mathematicarum, (80) 3-4.
pp. 659-664. (2014)

Sebestyén, Zoltán and Tarcsay, Zsigmond and Titkos, Tamás and Kérchy, László:
*Lebesgue decomposition theorems.*
Acta scientiarum mathematicarum, (79) 1-2.
pp. 219-233. (2013)

Tarcsay, Zsigmond:
*On operators with closed ranges.*
Acta scientiarum mathematicarum, (77) 3-4.
pp. 579-587. (2011)