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  2. Unit vector - Wikipedia

    en.wikipedia.org/wiki/Unit_vector

    Unit vector. In mathematics, a unit vector in a normed vector space is a vector (often a spatial vector) of length 1. A unit vector is often denoted by a lowercase letter with a circumflex, or "hat", as in (pronounced "v-hat"). The term direction vector, commonly denoted as d, is used to describe a unit vector being used to represent spatial ...

  3. Woodland Critter Christmas - Wikipedia

    en.wikipedia.org/wiki/Woodland_Critter_Christmas

    List of episodes. " Woodland Critter Christmas " is the 125th episode of the Comedy Central series South Park. It originally aired on December 15, 2004. [1] It was the last episode of the series to have a Christmas theme for ten years until 2014's "#HappyHolograms". This is also the last episode where Mr. Garrison presented as male until the ...

  4. Vector projection - Wikipedia

    en.wikipedia.org/wiki/Vector_projection

    The vector projection (also known as the vector component or vector resolution) of a vector a on (or onto) a nonzero vector b is the orthogonal projection of a onto a straight line parallel to b. The projection of a onto b is often written as or a∥b . The vector component or vector resolute of a perpendicular to b, sometimes also called the ...

  5. Christmas cracker - Wikipedia

    en.wikipedia.org/wiki/Christmas_cracker

    Christmas crackers traditionally contain a colourful crown-shaped hat made of tissue paper, a small toy, a plastic model, or a trinket, and a small strip of paper with a motto, a joke, a riddle, or a piece of trivia. [3] The paper hats, with the appearance of crowns, are usually worn at Christmas dinner. The tradition of wearing festive hats is ...

  6. Vector notation - Wikipedia

    en.wikipedia.org/wiki/Vector_notation

    Vector notation. Describing an arrow vector v by its coordinates x and y yields an isomorphism of vector spaces. 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 .

  7. Vector fields in cylindrical and spherical coordinates ...

    en.wikipedia.org/wiki/Vector_fields_in...

    Vectors are defined in spherical coordinates by ( r, θ, φ ), where. r is the length of the vector, θ is the angle between the positive Z-axis and the vector in question (0 ≤ θ ≤ π ), and. φ is the angle between the projection of the vector onto the xy -plane and the positive X-axis (0 ≤ φ < 2 π ). ( r, θ, φ) is given in ...

  8. One-hot - Wikipedia

    en.wikipedia.org/wiki/One-hot

    One-hot. In digital circuits and machine learning, a one-hot is a group of bits among which the legal combinations of values are only those with a single high (1) bit and all the others low (0). [1] A similar implementation in which all bits are '1' except one '0' is sometimes called one-cold. [2] In statistics, dummy variables represent a ...

  9. Orbital state vectors - Wikipedia

    en.wikipedia.org/wiki/Orbital_state_vectors

    Orbital position vector, orbital velocity vector, other orbital elements. In astrodynamics and celestial dynamics, the orbital state vectors (sometimes state vectors) of an orbit are Cartesian vectors of position ( ) and velocity ( ) that together with their time ( epoch) ( ) uniquely determine the trajectory of the orbiting body in space. [1 ...