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2. Variable (mathematics) - Wikipedia

   en.wikipedia.org/wiki/Variable_(mathematics)

   A parameter is a quantity (usually a number) which is a part of the input of a problem, and remains constant during the whole solution of this problem. For example, in mechanics the mass and the size of a solid body are parameters for the study of its movement.

3. Word problem (mathematics education) - Wikipedia

   en.wikipedia.org/wiki/Word_problem_(mathematics...

   Word problem from the Līlāvatī (12th century), with its English translation and solution. In science education, a word problem is a mathematical exercise (such as in a textbook, worksheet, or exam) where significant background information on the problem is presented in ordinary language rather than in mathematical notation.

4. Sums of three cubes - Wikipedia

   en.wikipedia.org/wiki/Sums_of_three_cubes

   Semi-log plot of solutions of + + = for integer , , and , and .Green bands denote values of proven not to have a solution.. 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.

5. List of mathematical series - Wikipedia

   en.wikipedia.org/wiki/List_of_mathematical_series

   This list of mathematical series contains formulae for finite and infinite sums. It can be used in conjunction with other tools for evaluating sums. Here, is taken to have the value {} denotes the fractional part of () is a Bernoulli polynomial.

6. Girls Just Want to Have Sums - Wikipedia

   en.wikipedia.org/wiki/Girls_Just_Want_to_Have_Sums

   In this episode, a new school principal decides to segregating boys and girls classes, and Lisa is dissatisfied with the New Age-based girls maths class. So, she disguises herself as a boy called Jake Boyman to infiltrate the boys' classroom to be admitted to the actual maths class, and Bart mistakes his camouflaged sister as a new friend.

7. Trace (linear algebra) - Wikipedia

   en.wikipedia.org/wiki/Trace_(linear_algebra)

   In linear algebra, the trace of a square matrix A, denoted tr(A), [1] is defined to be the sum of elements on the main diagonal (from the upper left to the lower right) of A. The trace is only defined for a square matrix (n × n). In mathematical physics texts, if tr(A) = 0 then the matrix is said to be traceless.