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  2. 2022–2023 Pentagon document leaks - Wikipedia

    en.wikipedia.org/wiki/2022–2023_Pentagon...

    In April 2023, two sets of leaked classified foreign intelligence documents of the United States began circulating on Twitter, Telegram, and 4chan. Jack Teixeira, an airman first class of the Massachusetts Air National Guard, had allegedly photographed printouts of the documents at his parents' home in Dighton, Massachusetts, and posted them to the instant messaging platform Discord on a ...

  3. Singleton bound - Wikipedia

    en.wikipedia.org/wiki/Singleton_bound

    In the linear code case a different proof of the Singleton bound can be obtained by observing that rank of the parity check matrix is . [4] Another simple proof follows from observing that the rows of any generator matrix in standard form have weight at most +.

  4. Parity-check matrix - Wikipedia

    en.wikipedia.org/wiki/Parity-check_matrix

    Formally, a parity check matrix H of a linear code C is a generator matrix of the dual code, C ⊥. This means that a codeword c is in C if and only if the matrix-vector product Hc ⊤ = 0 (some authors [1] would write this in an equivalent form, cH ⊤ = 0.) The rows of a parity check matrix are the coefficients of the parity check equations. [2]

  5. Convolutional code - Wikipedia

    en.wikipedia.org/wiki/Convolutional_code

    To convolutionally encode data, start with k memory registers, each holding one input bit.Unless otherwise specified, all memory registers start with a value of 0. The encoder has n modulo-2 adders (a modulo 2 adder can be implemented with a single Boolean XOR gate, where the logic is: 0+0 = 0, 0+1 = 1, 1+0 = 1, 1+1 = 0), and n generator polynomials — one for each adder (see figure below).

  6. Radioisotope thermoelectric generator - Wikipedia

    en.wikipedia.org/wiki/Radioisotope...

    Diagram of an RTG used on the Cassini probe. A radioisotope thermoelectric generator (RTG, RITEG), sometimes referred to as a radioisotope power system (RPS), is a type of nuclear battery that uses an array of thermocouples to convert the heat released by the decay of a suitable radioactive material into electricity by the Seebeck effect.

  7. Imane Khelif - Wikipedia

    en.wikipedia.org/wiki/Imane_Khelif

    Khelif was born in Aïn Sidi Ali, Laghouat Province. [11] [12] When she was two months old, her family moved to Biban Mesbah, a rural village in Tiaret Province, where she would grow up.

  8. PayPal - Wikipedia

    en.wikipedia.org/wiki/PayPal

    eBay, PayPal, Kijiji and StubHub, 500 King Street West, Toronto, April 2014. PayPal Holdings, Inc. is an American multinational financial technology company operating an online payments system in the majority of countries that support online money transfers; it serves as an electronic alternative to traditional paper methods such as checks and money orders.

  9. Shrek - Wikipedia

    en.wikipedia.org/wiki/Shrek

    Shrek is a 2001 American animated fantasy comedy film loosely based on the 1990 children's picture book of the same name by William Steig.Directed by Andrew Adamson and Vicky Jenson (in their feature directorial debuts) and written by Ted Elliott, Terry Rossio, Joe Stillman, and Roger S. H. Schulman, it is the first installment in the Shrek film series.