巧办法 发表于 2025-3-25 05:59:59
Approximation schemes for covering and packing problems in robotics and vlsi,le to derive algorithms that are the best possible in the sense that the exponential dependence on 1/ɛ cannot be removed unless NP=P. We also note that all other polynomial approximation schemes that we are familiar with rely on dynamic programming. The technique we introduced is an alternative to dEstrogen 发表于 2025-3-25 09:48:49
Covering polygons with minimum number of rectangles,ble number of rectangles. Let . be the set of all simple polygons with interior angles ≥ 90 degrees. Given a polygon . ε ., let .(.) be the minimum number of (possibly overlapping) rectangles lying within . necessary to cover ., and let r(.) be the ratio between the length of the longest edge of . acoagulate 发表于 2025-3-25 12:36:03
http://reply.papertrans.cn/87/8604/860331/860331_23.pngCorroborate 发表于 2025-3-25 19:37:41
http://reply.papertrans.cn/87/8604/860331/860331_24.pngAmbulatory 发表于 2025-3-25 23:52:45
http://reply.papertrans.cn/87/8604/860331/860331_25.pngMINT 发表于 2025-3-26 02:54:51
http://reply.papertrans.cn/87/8604/860331/860331_26.png引起痛苦 发表于 2025-3-26 06:31:21
http://reply.papertrans.cn/87/8604/860331/860331_27.png讨好美人 发表于 2025-3-26 10:47:27
Higher order data structures,deas of Scott and Lambeck but in an abstract data type environment. The results serve as a basis for the discussion of higher order specifications. We demonstrate that higher order equations based on λ-calculus are more appropriate if the equivalence of λ-calculus and cartesian closure is to be pres代理人 发表于 2025-3-26 16:37:42
On the structure of polynomial time degrees,very countable distributive lattice can be embedded in any interval of degrees. Furthermore, certain restraints — like preservation of the least or greatest element — can be imposed on the embeddings. 2) The upper semilattice of polynomial time many-one degrees is distributive, whereas that of the p信条 发表于 2025-3-26 20:18:47
Transformations realizing fairness assumptions for parallel programs,ss are considered: impartiality, liveness, weak and strong fairness. All transformations preserve the structure of the original programs and are thus suitable as a basis for syntax-directed correctness proofs.