A notion of inverse commands is deened for a language with a weakest precondition semantics, permitting both demonic and angelic nondeterminism as well as miracles and nontermination. Every conjunctive and terminating command is invertible, the inverse being non-miraculous and disjunctive. A simulation relation between commands is described using inverse commands. A generalized form of inverse ...

Books on Buddhism for general readers rarely mention miracles. Instead, the emphasis is usually on the life of the Buddha, his teachings, and the monastic order, the so-called “Three Treasures.” This is a heritage left by the European scholars who first became interested in Buddhism in the 19 century. Take the example of T.W. Rhys Davids, who founded the Pali Text Society in 1886 in England, an...

Successful organ transplantation is one of the many medical miracles that have occurred in our extraordinary century. The dream is ancient. The well-known story of Cosmos and Damian, the martyred twin physicians who replaced the gangrenous limb of a white sacristan with that of a dead Moor, is visually recorded by. many artists. However, it was not until the 1900s that scientifically documented...