Bandwidth can mean different things in the related fields of computer networks, communication theory, signal processing, and linear algebra. (The first two meanings are related by the Shannon–Hartley theorem.)

• Bandwidth (signal processing) – a measure of the width of a range of frequencies, measured in hertz
• Bandwidth (computing) – a rate of data transfer, measured in bits per second
• Bandwidth of a sparse matrix – the distribution of nonzero terms around the diagonal of a matrix

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