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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. Sums of three cubes - Wikipedia

   en.wikipedia.org/wiki/Sums_of_three_cubes

   In the mathematics of sums of powers, it is an open problem to characterize the numbers that can be expressed as a sum of three cubes of integers, allowing both positive and negative cubes in the sum. A necessary condition for an integer to equal such a sum is that cannot equal 4 or 5 modulo 9, because the cubes modulo 9 are 0, 1, and −1, and ...

4. Summation - Wikipedia

   en.wikipedia.org/wiki/Summation

   t. e. In mathematics, summation is the addition of a sequence of numbers, called addends or summands; the result is their sum or total. Beside numbers, other types of values can be summed as well: functions, vectors, matrices, polynomials and, in general, elements of any type of mathematical objects on which an operation denoted "+" is defined.

5. Minkowski addition - Wikipedia

   en.wikipedia.org/wiki/Minkowski_addition

   In geometry, the Minkowski sum of two sets of position vectors A and B in Euclidean space is formed by adding each vector in A to each vector in B : The Minkowski difference (also Minkowski subtraction, Minkowski decomposition, or geometric difference) [1] is the corresponding inverse, where produces a set that could be summed with B to recover A.

6. Waring's problem - Wikipedia

   en.wikipedia.org/wiki/Waring's_problem

   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.

7. A College Student Just Solved a Notoriously Impossible Math ...

   www.aol.com/college-student-just-solved...

   A college student just solved a seemingly paradoxical math problem—and the answer came from an incredibly unlikely place. ... For example, in the simple Sidon set (1, 3, 5, 11), when any of the ...