A
closed string (more accurately,
closed coil) is a
string state with no
open🔓 circuitry (does not have
endpoints; forms a
loop). All
game-related
strategies (
goals) are devised to obtain a
closed string (thereby
solving and validating it as some
fibor, although the
game itself may still be
open) via
folding. (see also
zero bubble,
loop)
Actually, there is no loop requirement for a string to be closed (not open), since the end of the string must attach to a (mem)brane (even if that membrane is the string's other endpoint). Therefore, the yield is derived when in that a string is closed, but only by acoustic approximation.
