grahamblocks.gd

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#W  grahamblocks.gd                     Manuel Delgado <[email protected]>
#W                                      Jose Morais    <[email protected]>
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#H  @(#)$Id: grahamblocks.gd,v 0.998 $
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#Y  Copyright (C)  2005,  CMUP, Universidade do Porto, Portugal
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#F  GrahamBlocks(mat_input)
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##  This function returns [mat, phi]
##  where mat is in Graham blocks form
##  and phi[i][j] = [i', j'] where mat_input[i'][j'] = mat[i][j]
DeclareGlobalFunction( "GrahamBlocks" );