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**Bandwidth** has several related meanings:

**Bandwidth** can also refer to:

This page contains text from Wikipedia, the Free Encyclopedia -
https://wn.com/Bandwidth

In mathematics, particularly matrix theory, a **band matrix** is a sparse matrix whose non-zero entries are confined to a diagonal *band*, comprising the main diagonal and zero or more diagonals on either side.

Formally, consider an *n*×*n* matrix *A*=(*a*_{i,j }). If all matrix elements are zero outside a diagonally bordered band whose range is determined by constants *k*_{1} and *k*_{2}:

then the quantities *k*_{1} and *k*_{2} are called the **lower** and **upper** **bandwidth**, respectively. The **bandwidth** of the matrix is the maximum of *k*_{1} and *k*_{2}; in other words, it is the number *k* such that if .

A matrix is called a **band matrix** or **banded matrix** if its bandwidth is reasonably small.

A band matrix with *k*_{1} = *k*_{2} = 0 is a diagonal matrix; a band matrix with *k*_{1} = *k*_{2} = 1 is a tridiagonal matrix; when *k*_{1} = *k*_{2} = 2 one has a pentadiagonal matrix and so on. If one puts *k*_{1} = 0, *k*_{2} = *n*−1, one obtains the definition of an upper triangular matrix; similarly, for *k*_{1} = *n*−1, *k*_{2} = 0 one obtains a lower triangular matrix.

This page contains text from Wikipedia, the Free Encyclopedia -
https://wn.com/Band_matrix

* Bandwidth* was a Canadian radio program, which formerly aired on most CBC Radio One stations in Ontario on Saturday afternoons. The program, produced by CBO-FM in Ottawa, was broadcast in all Ontario markets except Toronto, where CBLA airs its own local production,

Hosted by Meg Wilcox, the program was an arts and culture magazine which profiles the music scene in the province, including album reviews, interviews with musicians, and live concert performances. Amanda Putz was the program's original host, but took a sabbatical from 2006 to 2009 to work for Radio Television Hong Kong and CBC Radio 3. Later hosts included Alan Neal and Adam Saikaley.

The program's cancellation was announced in April 2014, as part of funding cuts to the CBC. Repeats continued to air in the program's old timeslot until the new program *In the Key of C*, hosted by Craig Norris from the network's studio in Kitchener, was launched in the fall.

This page contains text from Wikipedia, the Free Encyclopedia -
https://wn.com/Bandwidth_(radio_program)

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