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#############################################################################
##
## This file is part of GAP, a system for computational discrete algebra.
## This file's authors include Thomas Breuer.
##
## Copyright of GAP belongs to its developers, whose names are too numerous
## to list here. Please refer to the COPYRIGHT file for details.
##
## SPDX-License-Identifier: GPL-2.0-or-later
##
## This file contains the implementation of immutable empty row vectors.
## An empty row vector is an immutable empty list whose family is
## a collections family.
## Empty row vectors are different if their families are different,
## especially the ordinary empty list `[]' is different from every empty
## row vector.
##
## The first case where empty row vectors turned out to be necessary was
## in the representation of elements of a zero dimensional s.c. algebra.
##
#############################################################################
##
#A EmptyRowVector( <F> )
##
## is an empty row vector whose family is the collections family of <F>.
##
DeclareAttribute( "EmptyRowVector", IsFamily );
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