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The fidelity between two quantum states and , expressed as density matrices, is commonly defined as: [1] [2] (,) = ().The square roots in this expression are well-defined because both and are positive semidefinite matrices, and the square root of a positive semidefinite matrix is defined via the spectral theorem.
Peter Lynch (born January 19, 1944) [1] is an American investor, mutual fund manager, author and philanthropist.As the manager of the Magellan Fund [2] at Fidelity Investments between 1977 and 1990, Lynch averaged a 29.2% annual return, [3] consistently more than double the S&P 500 stock market index and making it the best-performing mutual fund in the world.
Today, Fidelity International handles investments for clients in Europe, Canada, EMEA and Asia, while the US-based Fidelity Management and Research handles investments for clients in the USA. In the same year that it was established, an office was opened in Tokyo, [ 4 ] followed by London in 1973, [ 5 ] Hong Kong in 1981 [ 6 ] and Taipei in 1986.
Fidelity also offers automated investing through its Fidelity Go robo-advisor. One drawback to its robo-advisor is that it charges a 0.35% annual advisory fee for balances of $25,000 and more.
The company was created by Edward Kholodenko and launched in 1999. [3] As of early 2020, the company was Canada's fastest growing online brokerage firm, [4] and has $30 billion under management, as of December 2024. [5]
Canada uses the inch-based paper standard e.g. the US Letter (8.5 inches × 11 inches), rather than the metric-based A4 paper size (210 mm × 297 mm) used throughout most of the world. The government, however, uses a combination of ISO paper sizes, and CAN 2-9.60M "Paper Sizes for Correspondence" specifies P1 through P6 paper sizes, which are ...
Enjoy a classic game of Hearts and watch out for the Queen of Spades!
Donald Trump mocked Canadian Prime Minister Justin Trudeau after his top minister’s surprise resignation following a clash on how to handle the president-elect’s looming tariffs.