Question: What is the founder of Tensor Trucks called?
Context: John Rodney Mullen (born August 17, 1966) is an American professional skateboarder, entrepreneur, inventor, and public speaker who practices freestyle and street skateboarding.  He is widely considered the most influential street skater in the history of the sport, being credited for inventing numerous tricks, including the flatground ollie, kickflip, heelflip, impossible, and 360-flip.  As a result, he has been called the "Father of Street Skateboarding." In mathematics, specifically in the field known as category theory, a monoidal category where the monoidal ("tensor") product is the categorical product is called a cartesian monoidal category.  Any category with finite products (a "finite product category") can be thought of as a cartesian monoidal category.  In any cartesian monoidal category, the terminal object is the tensor unit.  Dually, a monoidal finite coproduct category with the monoidal structure given by the coproduct and unit the initial object is called a cocartesian monoidal category, and any finite coproduct category can be thought of as a cocartesian monoidal category. In electromagnetism, the electromagnetic tensor or electromagnetic field tensor (sometimes called the field strength tensor, Faraday tensor or Maxwell bivector) is a mathematical object that describes the electromagnetic field in spacetime.  The field tensor was first used after the four-dimensional tensor formulation of special relativity was introduced by Hermann Minkowski.  The tensor allows related physical laws to be written very concisely. In linear algebra, an outer product is the tensor product of two coordinate vectors, a special case of the Kronecker product of matrices.  The outer product of two coordinate vectors formula_1 and formula_2, denoted formula_3, is a matrix formula_4 such that the coordinates satisfy formula_5.  The outer product for general tensors is also called the tensor product. In mathematics, Ricci calculus constitutes the rules of index notation and manipulation for tensors and tensor fields.  It is also the modern name for what used to be called the absolute differential calculus (the foundation of tensor calculus), developed by Gregorio Ricci-Curbastro in 1887–1896, and subsequently popularized in a paper written with his pupil Tullio Levi-Civita in 1900.  Jan Arnoldus Schouten developed the modern notation and formalism for this mathematical framework, and made contributions to the theory, during its applications to general relativity and differential geometry in the early twentieth century. In continuum mechanics, the Cauchy stress tensor formula_1, true stress tensor, or simply called the stress tensor is a second order tensor named after Augustin-Louis Cauchy.  The tensor consists of nine components formula_2 that completely define the state of stress at a point inside a material in the deformed state, placement, or configuration.  The tensor relates a unit-length direction vector n to the stress vector T across an imaginary surface perpendicular to n: Tensor Trucks is a skateboarding truck company founded and designed by professional skateboarder, Rodney Mullen, in 2000.  Tensor's parent company is Dwindle Distribution.  The company offers trucks in three different heights (lo, mid, hi) that are tailored for different wheel diameters—the hi is designed for 58mm wheels and smaller; the mid for 54mm or smaller; and the lo for 52mm and smaller.  Mullen holds US patent no. 6,443,471B1 for design features implemented in Tensors.  Tensor's trucks are manufactured in China. The most commonly used measure of stress is the Cauchy stress tensor, often called simply "the" stress tensor or "true stress".  However, several other measures of stress can be defined.  Some such stress measures that are widely used in continuum mechanics, particularly in the computational context, are: The E Series of Studebaker trucks can have two definitions.  It originally meant 1955-model Studebaker trucks, sold in half-ton, 3/4-ton, and 1-, 1.5-, and 2-ton capacities.  Later models were classified by Studebaker as follows: 1956: 2E series; 1957-58: 3E series; 1959: 4E series; 1960: 5E series; 1961: 6E series; 1962: 7E series; and 1963-64: 8E series.  Given these model-year designations, "E series" has come to mean all Studebaker trucks built between 1955 and the end of all vehicle production in the US in December 1963.  Within each tonnage rating, these trucks were all fairly similar, since Studebaker was in dire financial straits during this entire period and invested virtually nothing to update its truck division products.  For the 1956 and 1957-58 models, all Studebaker trucks were called Transtar. In differential geometry, a tensor density or relative tensor is a generalization of the tensor field concept.  A tensor density transforms as a tensor field when passing from one coordinate system to another (see tensor field), except that it is additionally multiplied or "weighted" by a power "W" of the Jacobian determinant of the coordinate transition function or its absolute value.  A distinction is made among (authentic) tensor densities, pseudotensor densities, even tensor densities and odd tensor densities.  Sometimes tensor densities with a negative weight "W" are called tensor capacity.  A tensor density can also be regarded as a section of the tensor product of a tensor bundle with a density bundle.
Answer: Father of Street Skateboarding