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Formal theory. Formally, a string is a finite, ordered sequence of characters such as letters, digits or spaces. The empty string is the special case where the sequence has length zero, so there are no symbols in the string.
Six Sigma (6σ) is a set of techniques and tools for process improvement.It was introduced by American engineer Bill Smith while working at Motorola in 1986.. Six Sigma strategies seek to improve manufacturing quality by identifying and removing the causes of defects and minimizing variability in manufacturing and business processes.
An ebook (short for electronic book), also known as an e-book or eBook, is a book publication made available in digital form, consisting of text, images, or both, readable on the flat-panel display of computers or other electronic devices.
In August 2020, as a result of the COVID-19 pandemic, Delta Air Lines announced that it would be cutting 1,941 pilot job positions if it could not conclude a cost reduction deal with its union. In January 2021, Delta said that, thanks to the federal support, it will be able to bring back 400 pilots in full time. Delta Global Staffing