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cs.DM2009
On finding a particular class of combinatorial identities
Krassimir Yankov Iordjev, Dimiter Stoichkov Kovachev
In this paper, a class of combinatorial identities is proved. A method is used which is based on the following rule: counting elements of a given set in two ways and making equal t…
cs.DM2008
On Some Classes of Functions and Hypercubes
Dimiter Stoichkov Kovachev
In this paper, some classes of discrete functions of -valued logic are considered, that depend on sets of their variables in a particular way. Obtained results allow to "constru…