Rendezhetk

Rendezhetk is a term used in Hungarian discussions of data organization and scheduling to denote the property or ability to rearrange a collection of elements into a new order under predefined constraints. The word is formed from rendezni (to arrange) with the suffix -het indicating possibility and the plural ending -k, and it appears in contexts such as programming, operations research, and user interface design.

In theoretical terms, an arrangement is rendezhetk if there exists a sequence of allowable moves that transforms the current order into the target order without violating constraints along the way. These moves may include adjacent swaps, element reassignments, or other permitted operations defined by a constraint system.

Applications include designing reorderable lists in software, sequencing tasks in workflows with precedence rules, and constructing flexible playlists or layouts. Algorithmically, rendezhetk relates to reachability in permutation spaces generated by a set of allowed operations and to the feasibility of rearrangements under constraint graphs. Key questions concern closure (whether all intended orders are reachable), the computational complexity of finding a valid rearrangement, and how rearrangement affects the stability of previously chosen positions.

Rendezhetk is primarily a theoretical construct used in Hungarian-language literature on rearrangement and scheduling problems. It intersects with, but is not identical to, broader concepts such as sorting, permutation, scheduling, and constraint satisfaction.