Distributive lattices are well known to be precisely those lattices that possess cancellation: x ∨ y = x ∨ z and x ∧ y = x ∧ z imply y = z. Cancellation, in turn, occurs whenever a lattice has neither of the 5-element lattices M3 or N5 as sublattices. In this paper we examine cancellation in skew lattices, where the involved objects are in many ways lattice-like, but the operations ∧ and ∨ no l...

We present a class of Ansätze for the up and down quark mass matrices which leads approximately to: |Vus| ∼ √ md/ms, |Vcb| ∼ ms/mb, and |Vub/Vcb| ∼ √ mu/mc. Sizes of the Kobayashi-Maskawa matrix elements are controlled solely by quark mass ratios. In particular, we introduce no other small parameter and our results do not rely on delicate cancellation. Electronic address: [email protected]...

We deene an extended real-valued metric, , for positional games and prove that this class of games is a topological semigroup. We then show that two games are nitely separated ii they are path-connected and ii two closely related Conway games are equivalent. If two games are at a nite distance then this distance is bounded by the maximum diierence of any two atoms found in the games. We may imp...

Objective: Since colposcopy biopsy test plays a significant role in the evaluation of cervix, especially in patients with an abnormal result of Pap smear test, therefore, this research study was conducted to compare the results of Pap smear and colposcopy directed punch biopsy tests at Firoozgar and Akbarabady hospitals from 2001 to 2003. Materials and Methods: This cross-sectional study was ca...

drug therapy is a complex and important process and because of the importance of drug interactions, especially in in-patients, accompanying problems and obstacles would exist as a result of concomitant use of drugs in these patients. for this purpose 3130 prescription order forms from bou-ali hospital were collected and all potential drug interactions presentwere extracted and evaluated in term...

We provide evidence for the validity of AdS/CFT correspondence in the Coulomb branch by comparing the Yang-Mills effective action with the potential between waves on two separated test 3-branes in the presence of a large number of other 3-branes. For constant gauge fields excited on the branes, this requires that the supergravity potential in a AdS5 × S background is the same as that in flat sp...

Modern clinical trials provide the evidence for most therapeutic advances, and that evidence, expressed in a statistical format, is used to draw inferences about a population from the study's results. Clinician judgment translates these inferences for best individual patient care, but many clinicians struggle with the statistical interpretation of trial results. This review provides a clinical ...

We give a classification of e.a.b. semistar (and star) operations by defining four different (successively smaller) distinguished classes. Then, using a standard notion of equivalence of semistar (and star) operations to partition the collection of all e.a.b. semistar (or star) operations, we show that there is exactly one operation of finite type in each equivalence class and that this operati...