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The center of a group G consists of all those elements x in G such that xg = gx for all g in G. This is a normal subgroup of G. The similarly named notion for a semigroup is defined likewise and it is a subsemigroup. The center of a ring (or an associative algebra) R is the subset of R consisting of all those elements x of R such that xr = rx ...
Glossary of mathematical symbols. A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula. As formulas are entirely constituted with symbols of various ...
In mathematics and physics, the centroid, also known as geometric center or center of figure, of a plane figure or solid figure is the arithmetic mean position of all the points in the surface of the figure. [further explanation needed] The same definition extends to any object in - dimensional Euclidean space. [1]
The formula to use is: METs x 3.5 x (your body weight in kilograms) / 200 = calories burned per minute. For example, say you weigh 160 pounds (approximately 73 kg) and you play singles tennis ...
Applying the principle of specificity to your exercise routine depends on the sport or activity you’re training for. If you want to get better at a specific athletic task or activity, you need ...
Flexibility: the ability to move muscles and joints through a full range of motion. Body composition: your body’s ratio of fat mass to fat-free mass like muscle and bone. Summary. The five ...
Health club. A health club (also known as a fitness club, fitness center, health spa, weight room and commonly referred to as a gym) is a place that houses exercise equipment for the purpose of physical exercise . In recent years, the number of fitness and health services have increased, expanding the interest among the population.
In mathematics, a Gaussian function, often simply referred to as a Gaussian, is a function of the base form. and with parametric extension for arbitrary real constants a, b and non-zero c. It is named after the mathematician Carl Friedrich Gauss. The graph of a Gaussian is a characteristic symmetric "bell curve" shape.