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Raising hands is a gesture involving lifting either one or both arms above one's head, which has a number of possible meanings, depending on the context of the gesture.. The action of hand-raising is involved in a number of greeting hand gestures, such as waving, salutes, and high fives.
A K-pop idol performing the finger heart gesture in 2015. The Finger heart, (Korean: 손가락 하트) also called Korean finger heart gesture, is a trend that was popularized in South Korea in the 1990s, in which the index finger and thumb come together like a snap to form a tiny heart.
In mathematics and physics, vector notation is a commonly used notation for representing vectors, [1] [2] which may be Euclidean vectors, or more generally, members of a vector space.