Hi-Riser (automobile)

Hi-Risers are a type of highly customized automobile, typically a traditional, full-size, body on frame, V8 powered, rear wheel drive American-built sedan modified by significantly increasing the ground clearance and adding large-diameter wheels with low-profile tires. Depending on the model and style of body, autos customized in this manner can be labeled "donk," "box," or "bubble."

Hi-risers originally grew out of the Dirty South subculture, but the trend has spread across the United States. Vehicles customized in the hi-riser style are distinguished by their oversized (even disproportionate) wheels, ranging from 20 inches to 30 inches or more in diameter (largest being 50 inch), as well as fanciful custom paint-jobs and expensive audio equipment. Suspension modifications similar to those employed on lifted pickup trucks are made to give adequate clearance for the large wheels. Often the suspension is modified so the front end sits slightly higher than the rear end, giving the car a swaggering appearance. Because of the exaggerated look gained from installing a lifted suspension and enormous wheels, donks are also known as "hi-risers" or "sky-scrapers."

Hyperrectangle

In geometry, an n-orthotope (also called a hyperrectangle or a box) is the generalization of a rectangle for higher dimensions, formally defined as the Cartesian product of intervals.

Types

A three-dimensional orthotope is also called a right rectangular prism, rectangular cuboid, or rectangular parallelepiped.

A special case of an n-orthotope, where all edges are equal length, is the n-cube.

By analogy, the term "hyperrectangle" or "box" refers to Cartesian products of orthogonal intervals of other kinds, such as ranges of keys in database theory or ranges of integers, rather than real numbers.

Dual polytope

The dual polytope of an n-orthotope has been variously called a rectangular n-orthoplex, rhombic n-fusil, or n-lozenge. It is constructed by 2n points located in the center of the orthotope rectangular faces.

An n-fusil's Schläfli symbol can be represented by a sum of n orthogonal line segments: { } + { } + ... + { }.

A 1-fusil is a line segment. A 2-fusil is a rhombus. Its plane cross selections in all pairs of axes are rhombi.

Square (algebra)

In mathematics, a square is the result of multiplying a number by itself. The verb "to square" is used to denote this operation. Squaring is the same as raising to the power 2, and is denoted by a superscript 2; for instance, the square of 3 may be written as 3², which is the number 9. In some cases when superscripts are not available, as for instance in programming languages or plain text files, the notations x^2 or x**2 may be used in place of x².

The adjective which corresponds to squaring is quadratic.

The square of an integer may also be called a square number or a perfect square. In algebra, the operation of squaring is often generalized to polynomials, other expressions, or values in systems of mathematical values other than the numbers. For instance, the square of the linear polynomial x + 1 is the quadratic polynomial x² + 2x + 1.

One of the important properties of squaring, for numbers as well as in many other mathematical systems, is that (for all numbers x), the square of x is the same as the square of its additive inverse −x. That is, the square function satisfies the identity x² = (−x)². This can also be expressed by saying that the squaring function is an even function.

Master of ceremonies

A master of ceremonies (also used in its abbreviated forms MC or emcee) or compère [commère being the female form] is the official host of a staged event or similar performance.

An MC usually presents performers, speaks to the audience, entertains people, and generally keeps the event moving. An MC may also tell jokes or anecdotes. The MC sometimes also acts as the protocol officer during an official state function.

The term is also used to refer to television game show hosts and/or hostesses.

In hip hop and electronic dance music, an MC, also referred to as a rapper, is a music artist and/or performer who usually creates and performs vocals for his/her own original material. An emcee focuses on skills, lyrical ability, and subject matter.

Origins

The term originates from the Catholic Church. The Master of Ceremonies is an official of the Papal Court responsible for the proper and smooth conduct of the elegant and elaborate rituals involving the Pope and the sacred liturgy. He may also be an official involved in the proper conduct of protocols and ceremonials involving the Roman Pontiff, the Papal Court, and other dignitaries and potentates. Examples of official liturgical books prescribing the rules and regulations of liturgical celebrations are Cæremoniale Romanum and Cæremoniale Episcoporum.