regularSequenceCheck -- how much of a list is regular
Synopsis
-
- Usage:
regularSequenceCheck(X,A)
-
Inputs:
-
Outputs:
Description
Given a list
X, the function
regularSequenceCheck gives an integer indicating how many initial elements of a
List form a regular sequence.
i1 : A = ZZ[x_1..x_4]/(x_4^2)
o1 = A
o1 : QuotientRing
|
i2 : regularSequenceCheck({x_1..x_4},A)
o2 = 3
|
This symbol is provided by the package Depth.
Caveat
regularSequenceCheck merely checks the injectivity of the maps in question. It does not check to see if XA = A.
Ways to use regularSequenceCheck :
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regularSequenceCheck(List,Module)
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regularSequenceCheck(List,Ring)
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regularSequenceCheck(Matrix,Module)
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regularSequenceCheck(Matrix,Ring)