How many decomposition types are there?*

The question seems incomplete as it doesn't specify the context or field for decomposition types. Decomposition could refer to several fields such as mathematics, computer science, chemistry, biology, etc. Each of these fields may have different types of decomposition. For example, in mathematics, there are several types like LU decomposition, QR decomposition, Cholesky decomposition, etc. In biology, decomposition refers to the process by which organic substances are broken down into simpler organic matter, and there are several types like autolysis, putrefaction, etc. Could you please provide more context or specify the field?