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Square D is an American manufacturer of electrical equipment headquartered in Andover, Massachusetts. Square D is a flagship brand of Schneider Electric , which acquired the company in 1991. The company was listed on the New York Stock Exchange for 55 years prior to its acquisition without reporting financial loss in any calendar quarter ...
Vox also stated that Cash App was the "No. 1 free finance app" in Apple's U.S. iPhone App Store and was "ahead" of PayPal and Venmo. [24] In October 2020, Square put approximately 1% of their total assets ($50 million) in Bitcoin (4,709 bitcoins), citing Bitcoin's "potential to be a more ubiquitous currency in the future" as their main ...
Square is a point-of-sale system for merchants with physical or online stores. [1] [2] Launched in 2009 by Block, Inc., [3] it enables sellers to accept card payments and manage business operations. As of 2023, Square is the U.S. market leader in point-of-sale systems, [4] [5] [6] serving 4 million sellers and processing $210bn annually. [7] [8]
Therefore, the space of square integrable functions is a Banach space, under the metric induced by the norm, which in turn is induced by the inner product. As we have the additional property of the inner product, this is specifically a Hilbert space , because the space is complete under the metric induced by the inner product.
In mathematics, a square-free element is an element r of a unique factorization domain R that is not divisible by a non-trivial square. This means that every s such that s 2 ∣ r {\displaystyle s^{2}\mid r} is a unit of R .
A polynomial has a square root if and only if all exponents of the square-free decomposition are even. In this case, a square root is obtained by dividing these exponents by 2. Thus the problem of deciding if a polynomial has a square root, and of computing it if it exists, is a special case of square-free factorization.
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