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2. Koobits - Wikipedia

   en.wikipedia.org/wiki/Koobits

   KooBits (stylised as KooBits with capitalised K and B) designs and builds digital products for children and educators. KooBits was founded in 2016 by current CEO Stanley, with Professor Sam Ge Shuzhi and Dr Chen Xiangdong. [1] The trio saw an opportunity in the rapid growth of the ebook industry and decided to focus on creating software for ...

3. Sum and Product Puzzle - Wikipedia

   en.wikipedia.org/wiki/Sum_and_Product_Puzzle

   Sum and Product Puzzle. The Sum and Product Puzzle, also known as the Impossible Puzzle because it seems to lack sufficient information for a solution, is a logic puzzle. It was first published in 1969 by Hans Freudenthal, [1] [2] and the name Impossible Puzzle was coined by Martin Gardner. [3] The puzzle is solvable, though not easily.

4. Readers–writers problem - Wikipedia

   en.wikipedia.org/wiki/Readers–writers_problem

   In computer science, the readers–writers problems are examples of a common computing problem in concurrency. [1] There are at least three variations of the problems, which deal with situations in which many concurrent threads of execution try to access the same shared resource at one time. Some threads may read and some may write, with the ...

5. Waring's problem - Wikipedia

   en.wikipedia.org/wiki/Waring's_problem

   In number theory, Waring's problem asks whether each natural number k has an associated positive integer s such that every natural number is the sum of at most s natural numbers raised to the power k. For example, every natural number is the sum of at most 4 squares, 9 cubes, or 19 fourth powers. Waring's problem was proposed in 1770 by Edward ...

6. Skim (software) - Wikipedia

   en.wikipedia.org/wiki/Skim_(software)

   skim-app .sourceforge .io. Skim is an open-source PDF reader. It is notably the first free software PDF reader for macOS. [2] It is written in Objective-C, and uses Cocoa APIs. It is released under a BSD license. It is also cited as being able to help annotate and read scientific papers. [3]

7. Worksheet - Wikipedia

   en.wikipedia.org/wiki/Worksheet

   A worksheet, in the word's original meaning, is a sheet of paper on which one performs work. They come in many forms, most commonly associated with children's school work assignments, tax forms, and accounting or other business environments. Software is increasingly taking over the paper-based worksheet. It can be a printed page that a child ...

8. Quadratic unconstrained binary optimization - Wikipedia

   en.wikipedia.org/wiki/Quadratic_unconstrained...

   Quadratic unconstrained binary optimization. Quadratic unconstrained binary optimization ( QUBO ), also known as unconstrained binary quadratic programming ( UBQP ), is a combinatorial optimization problem with a wide range of applications from finance and economics to machine learning. [1] QUBO is an NP hard problem, and for many classical ...

9. Josephus problem - Wikipedia

   en.wikipedia.org/wiki/Josephus_problem

   In computer science and mathematics, the Josephus problem (or Josephus permutation) is a theoretical problem related to a certain counting-out game. Such games are used to pick out a person from a group, e.g. eeny, meeny, miny, moe . A drawing for the Josephus problem sequence for 500 people and skipping value of 6.