In this paper, topological properties of Wijsman hyperspaces are investigated. We study the existence of isolated points in Wijsman hyperspaces. We show that every Tychonoff space can be embedded as a closed subspace in the Wijsman hyperspace of a complete metric space which is locally R.

We report 60 and 90 m observations of seven millisecond pulsars with the Infrared Space Observatory. The pulsar PSR B1257+12 is orbited by three planets, and other millisecond pulsars may be orbited by dust disks that represent planets that failed to form or their residue. We do not detect any infrared emission from the seven pulsars in our sample, and typical upper limits are 100 mJy. Using a ...

not long ago, city gates and entryways had high spatial value and were among the landmarks for marking city boundaries. today with cities having been expanded and developed, such aspect of the entrance concept is lost and entryways are turned to passages for transportation. in fact, the rich spatial value of such entrances has decreased as they are solely spaces for passing through out or into ...

The results can be tragic. Patients with addictions are unlikely to wait the hours or days it takes health insurers to approve the medications they need. Insurers are changing their practices, but not without some outside pressure.

The five largest US commercial health insurance companies together enroll 125 million members, or 43 percent of the country's insured population. Over the past decade these insurers have become increasingly dependent for growth and profitability on public programs, according to an analysis of corporate reports. In 2016 Medicare and Medicaid accounted for nearly 60 percent of the companies' heal...

In this paper, we show that for an almost locally separable metrizable space X, if its Wijsman hyperspace induced by one compatible metric is Baire, then X itself must be Baire. We also provide an example to demonstrate the necessity of separability.

This paper measures welfare losses caused by adverse selection and imperfect competition in privatized Medicare. I model insurers’ premium and coverage choices in an environment where consumers with heterogeneous preferences may impose di¤erent costs on their insurers. Using insurers’ behavior and exogenous variation in market structure, I identify a causal link between consumers’types and insu...

The main trigger to effect insurance cover of a claim made against the company or firm is proper notification of circumstances to insurers. Once again, many of you reading this article will not consider that there is much of an issue here. However, place yourself in the shoes of the small businessman or woman. A director is aware of an issue, which may give rise to a claim. He is caught in a di...