We consider computations of linear forms over {\bf R} by
circuits with linear gates where the absolute values
coefficients are bounded by a constant. Also we consider a
related concept of restricted rigidity of a matrix. We prove
some lower bounds on the size of such circuits and the
restricted rigidity of matrices in terms of the absolute value
of the determinant of the matrix.

Comment Comment on: TR98-042

we show how to prove Theorem 1 on the base of previously known
results somewhat cited in TR98-042