Wyniki wyszukiwania:

We introduce the notion of a near left almost ring (abbreviated as nLA-ring) which is in fact a generalization of left almost ring. A near left almost ring is a non-associative structure with respect to both the binary operations "+" and ".". However, it possesses properties which we usually encounter in "near ring" and "LA-ring". Historically, the first step towards the near-rings in axiomatic research was done by Dickson in 1905. He showed that there do exist, "Fields" with only one distributive law" (Near-fields) some year later these near-fields showed up the connection between near-field...

Dental amalgam is one of the oldest materials used in oral health care. It is one of the safest, durable and least expensive materials for a restoration. Although there are some concerns about mercury toxicity, it is estimated that more than 1 billion amalgam fillings are placed annually. One of its most common uses is in small-to moderate-sized posterior cavities, where moisture control is problematic and where cost is an overriding patient concern.