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7.7.16.0. purityTriang
Procedure from library purityfiltration.lib (see purityfiltration_lib).
- Usage:
- purityTriang(S), S matrix with entries of an Auslander regular ring D
- Return:
- a matrix T
- Purpose:
- compute a triangular block matrix T, such that M=D^p/D^q(S^t) is isomorphic to M'=D^p'/D^q(T^t)
Example:
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