When solving Constraint Satisfaction Problems (CSPs), it is desirable to find multiple solutions, or to find solutions that are robust, allowing us to modify the values of variables without breaking the solution. Furthermore, we would like to be able to represent these multiple solutions in a compact manner. We present a method for improving the performance of, and solutions returned by, stocha...

We consider the structure of the number projected BCS wave function in the particle-hole basis, and use it to study several approximate treatments of pairing. The analysis is carried out for the exactly solvable Richardson model involving a pure pairing hamiltonian acting in a space of equally spaced doubly degenerate levels at half filling. 1. Inroduction Pairing correlations are ubiquitous in...

The paper discusses and evaluates the extent of i-umlaut levelling in classical (ca. 1300–1400) post-classical (ca.1400–1550) Old Frisian nouns. In terms methodology, main goal analysis is to identify quantitative relation between incidence i-umlauted umlautless root vowels nominal declension paradigms. order understand assess process Frisian, three aspects that may have had an impact on presen...

the mādayān ī hazār dādestān «the book of thousand judgements» only an incomplete manuscript of several legal collections of sasanian era is at hand. noinformation about the life of farroxmard vahrāmān (f son v) collector is available. in principle, it is possible that the book be written under the reign of khosrow parviz, the last king listed in the book. .this article will examine the legal t...

in the corpus of persian texts, the word “dervish” generally represents a person who is satisfied with having few belongings and properties. in the islamic period, this word exactly corresponds to “sufi”. most of the lexicographers and researchers have mentioned two distinct equivalents for “dervish” in different persian texts. on the one hand, dervish means “beggar”. in this regard, “dervish” ...