vol. 41, no. 2 (2021)
The achromatic number of K<sub>6</sub> □ K<sub>7</sub> is 18
Mirko Horňák
Opuscula Math. 41, no. 2 (2021), 163-185,
https://doi.org/10.7494/OpMath.2021.41.2.163
Influence of an L<sup>p</sup>-perturbation on Hardy-Sobolev inequality with singularity a curve
Idowu Esther Ijaodoro, El Hadji Abdoulaye Thiam
Opuscula Math. 41, no. 2 (2021), 187-204,
https://doi.org/10.7494/OpMath.2021.41.2.187
On the gauge-natural operators similar to the twisted Dorfman-Courant bracket
Włodzimierz M. Mikulski
Opuscula Math. 41, no. 2 (2021), 205-226,
https://doi.org/10.7494/OpMath.2021.41.2.205
Dimension of the intersection of certain Cantor sets in the plane
Steen Pedersen, Vincent T. Shaw
Opuscula Math. 41, no. 2 (2021), 227-244,
https://doi.org/10.7494/OpMath.2021.41.2.227
Introduction to dominated edge chromatic number of a graph
Mohammad R. Piri, Saeid Alikhani
Opuscula Math. 41, no. 2 (2021), 245-257,
https://doi.org/10.7494/OpMath.2021.41.2.245
Remarks on the outer-independent double Italian domination number
Lutz Volkmann
Opuscula Math. 41, no. 2 (2021), 259-268,
https://doi.org/10.7494/OpMath.2021.41.2.259
Uniqueness of series in the Franklin system and the Gevorkyan problems
Zygmunt Wronicz
Opuscula Math. 41, no. 2 (2021), 269-276,
https://doi.org/10.7494/OpMath.2021.41.2.269