Publications & Works

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Published journal articles indexed by SCI, SSCI, and AHCI

Fredholm criteria in a C*-algebra acting on the Hardy space of the bi-disc with applications to composition operators

GÜL U., Koca B. B.
JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS , vol.477, no.1, pp.163-173, 2019 (SCI-Expanded) identifier identifier

An Invertibility Criterion in a C*-Algebra Acting on the Hardy Space with Applications to Composition Operators

GÜL U., Koca B. B.
MEDITERRANEAN JOURNAL OF MATHEMATICS , vol.15, no.6, 2018 (SCI-Expanded) Creative Commons License identifier identifier

Quasi-parabolic Composition Operators on Weighted Bergman Spaces

GÜL U.
COMPLEX ANALYSIS AND OPERATOR THEORY , vol.12, no.1, pp.55-79, 2018 (SCI-Expanded) Creative Commons License identifier identifier

ON THE C*-ALGEBRA GENERATED BY TOEPLITZ OPERATORS AND FOURIER MULTIPLIERS ON THE HARDY SPACE OF A LOCALLY COMPACT GROUP

Gul U.
JOURNAL OF OPERATOR THEORY , vol.73, no.2, pp.533-546, 2015 (SCI-Expanded) Creative Commons License identifier identifier

Parabolic Non-Automorphism Induced Toeplitz-Composition C*-Algebras with Piece-wise Quasi-Continuous symbols

Gul U.
COMPLEX ANALYSIS AND OPERATOR THEORY , vol.8, no.1, pp.111-127, 2014 (SCI-Expanded) Creative Commons License identifier identifier

ESSENTIAL SPECTRA OF QUASI-PARABOLIC COMPOSITION OPERATORS ON HARDY SPACES OF THE POLY-DISC

Gul U.
OPERATORS AND MATRICES , vol.7, no.4, pp.927-946, 2013 (SCI-Expanded) Creative Commons License identifier identifier

On almost contractions in partially ordered metric spaces via implicit relations

GÜL U., Karapinar E.
JOURNAL OF INEQUALITIES AND APPLICATIONS , 2012 (SCI-Expanded) identifier identifier

Essential spectra of quasi-parabolic composition operators on Hardy spaces of analytic functions

Gul U.
JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS , vol.377, no.2, pp.771-791, 2011 (SCI-Expanded) identifier identifier

Essential Spectra of Composition Operators on the Space of Bounded Analytic Functions

GÜL U.
TURKISH JOURNAL OF MATHEMATICS , vol.32, no.4, pp.475-480, 2008 (SCI-Expanded) identifier identifier

Articles Published in Other Journals

Stone Weierstrass Yaklaşım Teoremi

GÜL U.
Matematik Dünyası , pp.56-62, 2015 (Peer-Reviewed Journal)

Rastgele iki tamsayının aralarında asal olma ihtimali

GÜL U.
Matematik Dünyası , pp.49-53, 2015 (Peer-Reviewed Journal)

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