###
MATH 421, * ALGEBRA II *

Summer, 1995 MATH 421
Prof. John Beachy Information sheet
COURSE OBJECTIVES:
The student is expected to continue learning
basic results about groups, rings, and fields.
The concepts of homomorphism and quotient structure
(using an appropriate equivalence relation)
are of particular importance,
both for groups and for rings,
and will be used in particular to construct extension fields.
The course will end with a proof
that certain geometric constructions
(trisecting an angle, doubling the cube, and ``squaring the circle'')
are impossible using only a compass and straightedge.
These ideas represent developments in algebra since the early 1800's,
and although they go beyond what is taught in high school algebra,
they are important for prospective secondary teachers.
Work with rings and extension fields
is also an important prerequisite for studying algebra
at the graduate level.
COURSE PREREQUISITE: Math 420
TEXT: Abstract Algebra with a Concrete Introduction,
by Beachy and Blair, Prentice Hall, 1990.
SYLLABUS: Chapter Three, Groups, sections 3.6--3.8
Chapter Four, Polynomials, sections 4.1--4.4
Chapter Five, Rings, sections 5.1--5.3
Chapter Six, Fields, sections 6.1--6.3
REFERENCES: Herstein: Abstract Algebra
Artin: Algebra
Fraleigh: A First Course in Abstract Algebra
Gallian: Contemporary Abstract Algebra
Hillman and Alexanderson
GRADING: Final grades will be based on 500 points:
4 tests (400), and homework (100).
The second test will be a takehome test.
OFFICE HOURS: Monday-Thursday, 9:30--10:30, or by appointment.
Watson 355, Phone: 753-6753
June, 1995 July, 1995 August, 1995
S M Tu W Th F S S M Tu W Th F S S M Tu W Th F S
1 2 3 1 1 2 3 4 5
4 5 6 7 8 9 10 2 3 4 5 6 7 8 6 7 8 9 10 11 12
11 12 13 14 15 16 17 9 10 11 12 13 14 15 13 14 15 16 17 18 19
18 19 20 21 22 23 24 16 17 18 19 20 21 22 20 21 22 23 24 25 26
25 26 27 28 29 30 23 24 25 26 27 28 29 27 28 29 30 31
30 31
Classes begin: 6/19 Holiday: Tue, 7/4 Classes end: 8/10
LECTURES:
Monday Tuesday Wednesday Thursday
Week of
6/19 Review Review 3.6 3.6
6/26 3.7 3.7 3.7 3.8
7/3 3.8 Holiday 3.8 TEST I
7/10 4.1 4.2 4.3 4.4
7/17 5.1 5.1 5.2, TEST II 5.2
7/24 5.3 5.3 5.3 TEST III
7/31 6.1 6.1 6.2 6.2
8/7 6.2 6.3 6.3 TEST IV
ASSIGNMENTS:
6/26 p99 #20 p109 #5,14 p117 #7 p124 #4,8,14 p130 #9
6/28 p138 #1,5,6,7 p147 #1,3,4,5
7/5 p157 #6,7,9,12,13,16
7/12 p171 #13,14,16,17 p180 #1b,2c,7c,11
7/17 p180 #9 p186 #2f,2g,3a,6 p192 #9,10
7/27 p223 #17-20 p231 #6-9
8/8 p243 #1d,e,2,4 p247 #1b,c,2,5