**Serendipity****definition**, an aptitude for making desirable discoveries by accident. See more.Sep 21, 2017 · Generally, a download manager enables downloading of large files or multiples files in one session. Many web browsers, such as Internet Explorer 9, include a download manager.

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**math**through a highly engaging and customized program.This led to expressions involving the square roots of negative numbers, and eventually to the

**definition**of a new**number**: a square root of −1, denoted by i, a symbol assigned by Leonhard Euler, and called the imaginary unit. The complex numbers consist of all numbers of the form + where a and b are real numbers.**Meditation**is a practice in which an individual uses a technique – such as mindfulness, or focusing the mind on a particular object, thought, or activity – to train attention and awareness, and achieve a mentally clear and emotionally calm and stable state.In this Convention, the term "racial discrimination" shall mean any distinction, exclusion, restriction or preference based on race, colour, descent, or national or ethnic

**origin**which has the purpose or effect of nullifying or impairing the recognition, enjoyment or exercise, on an equal footing, of human rights and fundamental freedoms in the ...About ACM. ACM, the world's largest educational and scientific computing society, delivers resources that advance computing as a science and a profession.