11. In this case, it suffices to consider the cylinder sets 12. These sets of finite sequences are referred to as cylinder sets in the product topology. 13. Called a " pinger, " the cylinder sets off a radio signal when immersed in water. 14. Every open set in the subshift of finite type is a countable union of cylinder sets . 15. In the latter case, the resulting topology is the box topology; cylinder sets are never Hilbert cubes. 16. The cylinder sets are clopen sets. 17. From the outside, the chapel is a simple, windowless brick cylinder set inside a very shallow concrete moat. 18. A foundling wheel was a cylinder set upright in the outside wall of the building, rather like a revolving door. 19. Some lowrider bicycles even have air or hydraulic cylinders set -up to emulate the height adjustable suspension of lowrider motor cars. 20. Is modelled on the way that true measures push forward ( see the section cylinder set measures versus true measures ).