The complexity of determining the minimum number of flips that transform one triangulation of a convex point set into another remained a tantalizing open question for many decades. We settle this question by proving that computing shortest flip sequences between triangulations of convex polygons, and therefore also computing the rotation distance of binary trees, is NP-hard.
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The switches are immensely customizable, with settings to adjust actuation distance, Rapid Trigger, Simultaneous Opposed Cardinal Direction movement, and multiple inputs per key. The keyboard also has ultra-fast 8,000-Hz polling and multiple accessories included, such as multiple sets of screw-in feet to adjust the typing angle and tenting, detachable wrist rests, and extra cables to prevent unnecessary slack between the two halves.
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