enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Sum-free sequence - Wikipedia

   en.wikipedia.org/wiki/Sum-free_sequence

   Erdős (1962) showed that for every sum-free sequence there exists an unbounded sequence of numbers for which () = where is the golden ratio, and he exhibited a sum-free sequence for which, for all values of , () = (/), [1] subsequently improved to () = (/) by Deshouillers, Erdős and Melfi in 1999 [3] and to () = (/) by Luczak and Schoen in ...

3. Range query (computer science) - Wikipedia

   en.wikipedia.org/wiki/Range_query_(computer_science)

   Given a function that accepts an array, a range query (,) on an array = [,..,] takes two indices and and returns the result of when applied to the subarray [, …,].For example, for a function that returns the sum of all values in an array, the range query ⁡ (,) returns the sum of all values in the range [,].

4. Summation - Wikipedia

   en.wikipedia.org/wiki/Summation

   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. List of sums of reciprocals - Wikipedia

   en.wikipedia.org/wiki/List_of_sums_of_reciprocals

   The sum of the reciprocals of the numbers in any sum-free sequence is less than 2.8570 . The sum of the reciprocals of the heptagonal numbers converges to a known value that is not only irrational but also transcendental, and for which there exists a complicated formula.

6. Spreadsheet - Wikipedia

   en.wikipedia.org/wiki/Spreadsheet

   In this example, only the values in the A column are entered (10, 20, 30), and the remainder of cells are formulas. Formulas in the B column multiply values from the A column using relative references, and the formula in B4 uses the SUM() function to find the sum of values in the B1:B3 range.

7. Row and column spaces - Wikipedia

   en.wikipedia.org/wiki/Row_and_column_spaces

   The column space of a matrix is the image or range of the corresponding matrix transformation. Let be a field. The column space of an m × n matrix with components from is a linear subspace of the m-space. The dimension of the column space is called the rank of the matrix and is at most min(m, n). [1]