Abstract: In this paper, the least squares (LS) approximation approach is applied to solve the approximation problem of a sum of lognormal random variables (RVs). The LS linear approximation is based ...

Pi Approximation Day occurs every July 22nd. It celebrates pi, a key mathematical constant. Pi relates a circle's circumference to its diameter. William Jones introduced the π symbol in 1706.

Pi Approximation Day 2025 is celebrated on 22 July, marking the mathematical significance of the fraction 22/7, a widely used approximation of pi. This special day honors the constant pi (π), which ...

In simple terms, approximation means replacing actual numbers with their nearby simple values to make calculations faster. For example, instead of multiplying 19.9 with 5.1, you can take them as 20 ...

Photochemical reactions are widely modeled using the popular trajectory surface hopping (TSH) method, an affordable mixed quantum-classical approximation to the full quantum dynamics of the system.

A number of people celebrate March 14 as Pi Day as the date lines up in the numbers of the famous constant 3.14. However, such a format of writing dates is mostly followed in the US. Others opt to ...

Abstract: The approximation learning of fuzzy concepts associated with fuzzy rough sets and three-way decisions is a useful technology for the representation, learning, and transformation of uncertain ...