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  2. Root of unity - Wikipedia

    en.wikipedia.org/wiki/Root_of_unity

    The product and the multiplicative inverse of two roots of unity are also roots of unity. In fact, if x m = 1 and y n = 1, then (x −1) m = 1, and (xy) k = 1, where k is the least common multiple of m and n. Therefore, the roots of unity form an abelian group under multiplication. This group is the torsion subgroup of the circle group.

  3. The Black Cat (1981 film) - Wikipedia

    en.wikipedia.org/wiki/The_Black_Cat_(1981_film)

    The Black Cat was distributed theatrically in Italy by Italian International Film on April 4, 1981. [1] It was released theatrically in the United States in February 1984. [3] The film has been released on DVD in America by Anchor Bay Entertainment on May 29, 2001 [6] and Blue Underground and in the UK by Salvation Films and Shameless Screen ...

  4. Multiplicative inverse - Wikipedia

    en.wikipedia.org/wiki/Multiplicative_inverse

    For every x except 0, y represents its multiplicative inverse. The graph forms a rectangular hyperbola. In mathematics, a multiplicative inverse or reciprocal for a number x, denoted by 1/x or x −1, is a number which when multiplied by x yields the multiplicative identity, 1. The multiplicative inverse of a fraction a/b is b/a. For the ...

  5. Complex number - Wikipedia

    en.wikipedia.org/wiki/Complex_number

    Multiplication of 2 + i (blue triangle) and 3 + i (red triangle). The red triangle is rotated to match the vertex of the blue one (the adding of both angles in the terms φ 1 +φ 2 in the equation) and stretched by the length of the hypotenuse of the blue triangle (the multiplication of both radiuses, as per term r 1 r 2 in the equation).

  6. The Black Cat (1941 film) - Wikipedia

    en.wikipedia.org/wiki/The_Black_Cat_(1941_film)

    The film was a stylistic hybrid, inspired by comedy "Old Dark House" films of the era as well as the 1843 short story "The Black Cat" by Edgar Allan Poe. It stars Basil Rathbone as Montague Hartley, the head of a greedy family who await the death of Henrietta Winslow (played by Cecilia Loftus ) so that they can inherit her fortune.

  7. The Black Cat (1934 film) - Wikipedia

    en.wikipedia.org/wiki/The_Black_Cat_(1934_film)

    The Black Cat is a 1934 American pre-Code horror film directed by Edgar G. Ulmer and starring Boris Karloff and Béla Lugosi. It was Universal Pictures' biggest box office hit of the year, and was the first of eight films (six of which were produced by Universal) to feature both Karloff and Lugosi.

  8. The Case of the Black Cat - Wikipedia

    en.wikipedia.org/wiki/The_Case_of_the_Black_Cat

    The Case of the Black Cat is a 1936 American mystery film directed by William C. McGann and an uncredited Alan Crosland, based on the 1935 Perry Mason novel The Case of the Caretaker's Cat by Erle Stanley Gardner. The film stars Ricardo Cortez as Perry Mason and co-stars June Travis and Jane Bryan in her film debut.

  9. List of unreleased projects by Kanye West - Wikipedia

    en.wikipedia.org/wiki/List_of_unreleased...

    On November 18, 2019, West announced a remix of Jesus is King with American producer-rapper Dr. Dre. [130] On January 16, 2020, a Dr. Dre-produced song "Up from the Ashes" (later appearing on Donda), leaked onto YouTube, but was later taken down due to copyright claims. [131] Another track titled "LA Monster", also leaked two months later. [132]