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2. Hilbert's fifth problem - Wikipedia

   en.wikipedia.org/wiki/Hilbert's_fifth_problem

   Hilbert's fifth problem is the fifth mathematical problem from the problem list publicized in 1900 by mathematician David Hilbert, and concerns the characterization of Lie groups. The theory of Lie groups describes continuous symmetry in mathematics; its importance there and in theoretical physics (for example quark theory ) grew steadily in ...

3. Textbook - Wikipedia

   en.wikipedia.org/wiki/Textbook

   Given that the problem of high textbook prices is linked to the "broken" economics of the market, requiring publishers to disclose textbook prices to faculty is a solution pursued by a number of legislatures. [23] By inserting price into sales interactions, this regulation will supposedly make the economic forces operate more normally.

4. Parallel postulate - Wikipedia

   en.wikipedia.org/wiki/Parallel_postulate

   If the sum of the interior angles α and β is less than 180°, the two straight lines, produced indefinitely, meet on that side. In geometry, the parallel postulate, also called Euclid's fifth postulate because it is the fifth postulate in Euclid's Elements, is a distinctive axiom in Euclidean geometry.

5. 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.

6. Moment (mathematics) - Wikipedia

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

   In mathematics, the moments of a function are certain quantitative measures related to the shape of the function's graph.If the function represents mass density, then the zeroth moment is the total mass, the first moment (normalized by total mass) is the center of mass, and the second moment is the moment of inertia.

7. Quintic function - Wikipedia

   en.wikipedia.org/wiki/Quintic_function

   Finding the roots (zeros) of a given polynomial has been a prominent mathematical problem.. Solving linear, quadratic, cubic and quartic equations in terms of radicals and elementary arithmetic operations on the coefficients can always be done, no matter whether the roots are rational or irrational, real or complex; there are formulas that yield the required solutions.