\input /profs/cs1/kaltofen/text/def.tex
\twelvepoint
\hbox to \hsize{\hfill\vtop{\halign {\hfill {\bf #}\hfill\cr
65-4962-01 \& 66-4961-01 Computational Abstract Algebra\cr
Homework~4\cr
Due 3/7/1990\cr}}\hfill}
\def\Problem#1{\medskip\noindent{\bf Problem~#1:}}
\Problem1
Problem 10 in Chapter IV of Lipson.
\Problem2
Problem 12 in Chapter IV in Lipson.
\Problem3
Problem 13 in Chapter IV in Lipson (this exercise in our language means to establish
that in any integral domain a prime element is an irreducible one, but not the reverse.)
\bye