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CMSC 442/653
Instructor: Dr. Lomonaco
Homework 1
•
Listening Assignment:
Listen to Beethoven’s 5th symphony.
•
Reading
Assignment:
http://www.cs.umbc.edu/~lomonaco/s06/652/slides/Equilateral
Triangle.pdf
•
Optional Reading assignment:
Peterson & Weldon, "ErrorCorrecting Codes,"
MIT Press, (Second Edition), Chapter 2.
1)
Construct the multiplication table of the group of symmetries of the equilateral
triangle given by the presentation
( )
32
2
, :
1,
ρ σ
ρ
σ
ρσ
σρ
=
=
Assume that the distinct group elements are:
22
1, ,
, ,
,
ρρ σρσρσ
2)
Construct the multiplication table of the group of symmetries of the square given
by the presentation
( )
42
3
=
=
Assume that the distinct group elements are:
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This note was uploaded on 09/14/2011 for the course CMSC 442 taught by Professor Lomonacojr,s during the Fall '08 term at UMBC.
 Fall '08
 LomonacoJr,S

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