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HyperplaneArrangements : Table of Contents
HyperplaneArrangements
-- hyperplane arrangements
Arrangement
-- class of hyperplane arrangements
arrangement
-- create a hyperplane arrangement
Arrangement ^ Flat
-- restriction of arrangement to flat
Arrangement _ Flat
-- Subarrangement containing a fixed flat
arrangementSum
(missing documentation )
changeRing
(missing documentation )
closure
-- closure operation in the intersection lattice
coefficients(Arrangement)
-- create a matrix from the coefficients of the equations of an arrangment
compress(Arrangement)
-- extract nonzero equations
deletion
-- subarrangement given by deleting a hyperplane
der
-- Module of logarithmic derivations
der(..., Strategy => ...)
EPY
(missing documentation )
euler(Flat)
-- Euler characteristic
Flat
-- intersection of hyperplanes
flat
-- make a flat from a list of indices
Flat ^ Flat
-- meet operation in intersection lattice
Flat | Flat
-- join operation in intersection lattice
flats
-- list the flats of an arrangement of given rank
graphic
-- Make a graphic arrangement
HypAtInfinity
(missing documentation )
matrix(Arrangement)
-- create a matrix from the equations of an arrangement
meet
-- meet operation in intersection lattice
orlikSolomon
-- defining ideal for the Orlik-Solomon algebra
orlikSolomon(..., HypAtInfinity => ...)
-- hyperplane at infinity
orlikSolomon(..., Projective => ...)
-- specify projective complement
rank(Arrangement)
-- compute the rank
restriction
-- restriction of arrangement to flat/hyperplane
ring(Arrangement)
-- get the associated ring
subArrangement
-- Subarrangement containing a fixed flat
tolist
(missing documentation )
trim(Arrangement)
-- minimize the generators
typeA
-- Type A reflection arrangement
typeA(ZZ,PolynomialRing)
-- A_n arrangement with specified coordinate ring
typeA(ZZ,Ring)
-- A_n reflection arrangement with specified coefficient ring
typeB
-- Type B reflection arrangement
typeD
-- Type D reflection arrangement
vee
-- join operation in intersection lattice