
theorem
  CLSStruct(# the_set_of_l2ComplexSequences, Zero_(
    the_set_of_l2ComplexSequences,Linear_Space_of_ComplexSequences), Add_(
    the_set_of_l2ComplexSequences,Linear_Space_of_ComplexSequences), Mult_(
the_set_of_l2ComplexSequences,Linear_Space_of_ComplexSequences) #) is Subspace
  of Linear_Space_of_ComplexSequences by Th6;
