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2. Rotation (mathematics) - Wikipedia

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

   The rotation group is a Lie group of rotations about a fixed point. This (common) fixed point or center is called the center of rotation and is usually identified with the origin. The rotation group is a point stabilizer in a broader group of (orientation-preserving) motions. For a particular rotation: The axis of rotation is a line of its ...

3. Lowest common denominator - Wikipedia

   en.wikipedia.org/wiki/Lowest_common_denominator

   The lowest common denominator of a set of fractions is the lowest number that is a multiple of all the denominators: their lowest common multiple. The product of the denominators is always a common denominator, as in: + = + =

4. Least common multiple - Wikipedia

   en.wikipedia.org/wiki/Least_common_multiple

   The least common multiple of the denominators of two fractions is the "lowest common denominator" (lcd), and can be used for adding, subtracting or comparing the fractions. The least common multiple of more than two integers a , b , c , . . . , usually denoted by lcm( a , b , c , . . .) , is defined as the smallest positive integer that is ...

5. Point groups in three dimensions - Wikipedia

   en.wikipedia.org/wiki/Point_groups_in_three...

   In the case of multiple mirror planes and/or axes of rotation, two symmetry groups are of the same symmetry type if and only if there is a rotation mapping the whole structure of the first symmetry group to that of the second. (In fact there will be more than one such rotation, but not an infinite number as when there is only one mirror or axis.)

6. Rotation of axes in two dimensions - Wikipedia

   en.wikipedia.org/wiki/Rotation_of_axes_in_two...

   In mathematics, a rotation of axes in two dimensions is a mapping from an xy-Cartesian coordinate system to an x′y′-Cartesian coordinate system in which the origin is kept fixed and the x′ and y′ axes are obtained by rotating the x and y axes counterclockwise through an angle .

7. 15 Most Livable Family Towns Where Your Middle-Class ... - AOL

   www.aol.com/finance/15-most-livable-family-towns...

   Verona, Wisconsin. Population: 14,040 Median income: $109,960 Annual cost of living: $74,699 Leftover income: $35,261 Editor’s note: Photos are for representational purposes only and might not ...

8. Rotor (mathematics) - Wikipedia

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

   In mathematics, a rotor in the geometric algebra of a vector space V is the same thing as an element of the spin group Spin(V).We define this group below. Let V be a vector space equipped with a positive definite quadratic form q, and let Cl(V) be the geometric algebra associated to V.

9. Savings interest rates today: Boost your savings higher ... - AOL

   www.aol.com/finance/savings-interest-rates-today...

   There’s no official definition for either of these accounts. Rather, each is a type of deposit account that can earn you incremental interest on your balance, helping you to grow your savings.