3 http://hdl.handle.net/10338.dmlcz/153710 3 On some $q$-generalization of Super Catalan numbers http://hdl.handle.net/10338.dmlcz/153719 On some $q$-generalization of Super Catalan numbers Enumerating 2D and 3D lattice paths with arbitrary steps http://hdl.handle.net/10338.dmlcz/153718 Enumerating 2D and 3D lattice paths with arbitrary steps A study on best approximation and Banach algebra in $n$-normed linear space http://hdl.handle.net/10338.dmlcz/153717 A study on best approximation and Banach algebra in $n$-normed linear space Duality for pairs of upward bipolar plane graphs and submodule lattices http://hdl.handle.net/10338.dmlcz/153716 Duality for pairs of upward bipolar plane graphs and submodule lattices