In the southern part of the Great Hungarian Plain there are two different groundwater flow systems located in the study area. Between these two systems there is a narrow groundwater divide where groundwater flow cannot be detected. In the western part, groundwater of greater hardness moves from the northwest, west and southwest. In the eastern part, groundwater flow is from southeast to northwe...

We revisit the q-deformed counterpart of the Zassenhaus formula, expressing the Jackson q-exponential of the sum of two non-q-commuting operators as an (in general) infinite product of q-exponential operators involving repeated q-commutators of increasing order, Eq(A + B) = Eqα0 (A)Eqα1 (B) ∏ ∞ i=2 Eqαi (Ci). By systematically transforming the q-exponentials into exponentials of series and usin...

We consider two-person sports where each rally is initiated by a server, the other player (the receiver) becoming the server when he/she wins a rally. Historically, these sports used a scoring based on the side-out scoring system, in which points are only scored by the server. Recently, however, some federations have switched to the rally-point scoring system in which a point is scored on every...