Contents of CMUC 2020 (1)

Evgenii L. Bashkirov
Two remarks on Lie rings of $2\times 2$ matrices over commutative associative rings
Comment.Math.Univ.Carolin. 61,1 (2020) 1-10 Abstract, Full text(PS, PDF)

Ivan Chajda, Helmut Länger
Orthomodular lattices that are horizontal sums of Boolean algebras
Comment.Math.Univ.Carolin. 61,1 (2020) 11-20 Abstract, Full text(PS, PDF)

Martin Goldstern, Lukas D. Klausner
Stranger things about forcing without AC
Comment.Math.Univ.Carolin. 61,1 (2020) 21-26 Abstract, Full text(PS, PDF)

Mitra Jalali, Abolfazl Tehranian, Reza Nikandish, Hamid Rasouli
Some classes of perfect strongly annihilating-ideal graphs associated with commutative rings
Comment.Math.Univ.Carolin. 61,1 (2020) 27-34 Abstract, Full text(PS, PDF)

Panneerselvam Prabakaran
Relative weak derived functors
Comment.Math.Univ.Carolin. 61,1 (2020) 35-50 Abstract, Full text(PS, PDF)

Mahdi Dehghani, Mohammad B. Dehghani, Mohammad S. Moshtaghioun
Sequentially Right Banach spaces of order $p$
Comment.Math.Univ.Carolin. 61,1 (2020) 51-67 Abstract, Full text(PS, PDF)

Lech Drewnowski
True preimages of compact or separable sets for functional analysts
Comment.Math.Univ.Carolin. 61,1 (2020) 69-82 Abstract, Full text(PS, PDF)

Amir Sahami, Mohammad R. Omidi, Eghbal Ghaderi, Hamzeh Zangeneh
Approximate biflatness and Johnson pseudo-contractibility of some Banach algebras
Comment.Math.Univ.Carolin. 61,1 (2020) 83-92 Abstract, Full text(PS, PDF)

Farah H. Al-Hussaini, Aligadzhi R. Rustanov, Habeeb M. Abood
Vanishing conharmonic tensor of normal locally conformal almost cosymplectic manifold
Comment.Math.Univ.Carolin. 61,1 (2020) 93-104 Abstract, Full text(PS, PDF)

Shyamal K. Hui, Richard S. Lemence, Pradip Mandal
Wintgen inequalities on Legendrian submanifolds of generalized Sasakian-space-forms
Comment.Math.Univ.Carolin. 61,1 (2020) 105-117 Abstract, Full text(PS, PDF)

Selcen Y. Perktaş, Bilal E. Acet, Adara M. Blaga
A short note on $f$-biharmonic hypersurfaces
Comment.Math.Univ.Carolin. 61,1 (2020) 119-126 Abstract, Full text(PS, PDF)

Taras Banakh, Joanna Garbulińska-Węgrzyn
Corrigendum to the paper ``The universal Banach space with a~$K$-suppression unconditional basis''
Comment.Math.Univ.Carolin. 61,1 (2020) 127-128 Abstract, Full text(PS, PDF)