Math. 311                                           Fall 1998

                     HOMEWORK SUMMARY REPORT


  Week number: 10         
    
  Problem number: 6.2.18 

  Number of papers received: 3 

  Reviewing committee (Greek letter): eta      

  List all participating members: Jeremy Ruple, Jennifer Sample



  Author[s] of paper[s] chosen for publication: Andrew H. Barkley              


  Comments: This paper is very neat and professional looking.  The
explanation is straight forward and thourough.

   

INSTRUCTOR'S COMMENT:  Andrew's proof is correct and instructive, but not
exactly what I expected.  The most straightforward approach is:

1)  Prove that every element of S belongs to S-perp-perp.

2)  Prove that every element of S-perp-perp belongs to S.  Here you start
by breaking the vector into a part in S and a part in S-perp.