The theorem of Sylow is proved in Isabelle HOL. We follow the proof by Wielandt that is more general than the original and uses a non-trivial combinatorial identity. The mathematical proof is explained in some detail leading on to the mechanization of group theory and the necessary combinatorics in Isabelle. We present the mechanization of the proof in detail giving reference to theorems contai...

Mechanization of cotton harvesting began in earnest in the Soviet Union in 1958 and was expected to proceed more rapidly than the market-driven process which had begun in the USA a decade earlier. Despite high output of cotton-picking machines, the share of the crop harvested mechanically grew more slowly than in the USA. Mechanical picking was resisted at the farm level on the basis of distort...

Formal program design methods are most useful when supported with suitable mechanization. This need for mechanization has long been apparent, but there have been doubts whether veriication technology could cope with the problems of scale and complexity. Though there is very little compelling evidence either way at this point, several powerful mechanical veriication systems are now available for...

Due to the increase of production costs in manual harvesting, strategies must be developed in order to overcome these effects, such as the attempts in implementing agricultural machines in harvest activities, whether being totally or partially mechanized. This study brings a qualitative and quantitative comparison on the impacts in work conditions and productivity in Brazilian orchards caused b...

Resolution reasoners, when applied to set theory problems, typically suffer from “lack of focus.” MARS is a program that attempts to rectify this difficulty by exploiting the definition-like character of the set theory axioms. As in the case of its predecessor, SLIM, it employs a tableau proof procedure based on binary resolution, but MARS IS enhanced by an equality substitution rule and a devi...

The systematic evaluation of Web design guidelines poses a series of challenges, including the ability to accurately interpret them and to transform them into a mechanized way that is machine processable. Systematic or automatic evaluation is particularly useful when the web site to evaluate across the designated guidelines is a large-scale, information-rich, potentially distributed web site (v...

Any language has as part of its structure patterns according to which items are arranged on each of its strata. The term tactics is widely used for the analysis and description of arrangements, and the term syntax is traditionally used with reference to arrangements on the morphemic straturn. It is in connection with that stratum that the study of tactics of greatest interest in linguistics. Th...

Ridge tillage is one of the essential methods in China. It affects soil structure by altering soil-water environment. With rapid development agricultural mechanization, mechanized ridge technology that combines modern agriculture with conservation has become a pertinent production hilly regions. However, to date, effects on have garnered little attention. In this study, field plot experiment in...

Socio-Technical Systems (STS) theory is rooted in principles that have their origin in action research field projects undertaken by the Tavistock Institute of Human Relations in British coal mines during postwar reconstruction of industry (Trist, 1950). This was a time when mine productivity was failing to increase despite major investments in increased mechanization, while labor turnover and a...