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Aut2022: MAS4301 3249 (14949) Abstract.Algebra.1 MWF7 [13:55-14:45] LIT235 (NE)
Little 235
(abstract) Algebra 1
End-of-Semester Games Party 2022t (click for larger)
Quantifiers
∀ and
∃
(“for all”
and
“there exists”)
are like nitroglycerin, in that one little mis-step leads to the whole
thing blowing up in your face.
There is no partial credit when it comes to Explosives and Quantifiers.
-JLF King
IOP-Y
End-of-semester
Algebra IOP(Individual Optional Project)
...will be due,
slid
u
n
d
e
r
my office door (Little Hall 402, Northeast corner)
,
no later than
2PM, Friday, 09Dec2022
The IOP must be carefully typed,
but diagrams may be hand-drawn.
For the typesetting, one possibility
is the (free)
mathematics-typesetting language
.
At all times have a paper copy you can hand-in; I do
NOT accept
electronic versions.
Print out a copy each day, so that you always have the latest version to
hand-in; this, in case your printer or computer fails.
(You are too old for My dog ate my homework.
)
Please follow the guidelines on the
Checklist
(pdf, 3pages) to earn full credit.
The various Math czars who help out.
| Extra-Probs |
Computer&Projector |
Time |
Memory/Telepathy |
Blackboard |
| Brandon D. |
Brandon D. |
everyone |
? |
everyone |
In all of my courses,
attendance is absolutely required
(excepting illness and religious holidays).
In the unfortunate event that you miss a class, you are
responsible to get all
Notes / Announcements / TheWholeNineYards
from a classmate, or several.
All my classes have a
substantial
class-participation grade.
- Folks had a Burning side-interest
to post solns to the delightful
Class-X
so as to earn CP points and --more importantly--
help colleagues.
- In one convenient location:
All 7
Alg quizzes (pdf),
In this quizzes
link, please have read the binomial/multinomial conventions
on page 2, together with Operations on Sets.
Examples of
[Monday, 14Nov.]
Burnside's Lemma
and
necklace/bracelet counting.
See also
w:Burnside's lemma and
its application to
w:Counting necklaces.
- A useful reference is
Group Notes (pdf).
[We will eventually discuss the
w:Commutator of two elements
in a group.]
-
The Fun-with-Permutations
Class-W
is now online --for the ambitious student to work through.
- The delightfully thought-provoking
Class-V
was moved to Monday, 03Oct.,
as UF was closed due to hurricane Ian.
Class-V made use of information/notation from
our small introduction to
Permutation
notation and notions [pdf].
Please have learned the definitions of:
the symmetric gp,
one/two-line notation,
cycle-structure,
canonical cycle-notation [CCN],
DCN,
L-to-R composition of perms,
cycle-signature [CySig],
sign of a perm
and the
Perm-sign theorem.
-
Fall2022 Abstract Alg. syllabus.
The Euclidean algorithm can be presented in table-form; I
call this form the
Lightning-bolt algorithm (pdf),
because the update-rule looks like a lightning-bolt (used thrice).
Here is a
practice sheet for LBolt (pdf).
The first page of
Algorithms in Number Theory (pdf),
uses LBolt iteratively to compute the GCD of a list of integers,
together with its list of Bézout multipliers.
Page 2 uses LBolt to solve linear congruences:
Find all x where 33x is mod-114 congruent to 18.
- Prof. Gallian's home page.
Has links to a modular-arithmetic calculator.
- In order to facilitate for students posting solns to our Archive,
in addition to Gallian, we may use
Abstract Algebra: Theory and Applications by
Thomas Judson (2016 Edition),
an online text made publicly available by its author. Students can post solns
both from Gallian and the Judson text, as well as any interesting
algebra problems that students create.
- An Introduction to Isomorphism, via Gambling.
And a
A solution to Gambling!
- [For the extraordinarily ambitious student]
Finite fields have cyclic multiplicative groups (pdf).
This also proves the Primitive Root Thm, and Korselt's Thm characterizing the
Carmichael numbers.
- Nostalgia?: See
past Abstract Algebra incarnations.
This will help you decide if my teaching-style is the right style for you.
- First week of class:
Memorize the
Math-Greek alphabet (pdf).
which we will use in class frequently.
- First week of class:
Read and throughly understand
w:Set-builder notation
(up through “Equivalent predicates...”).
- First week of class:
Work through this
Practice-prereq (pdf)
to see what you need to review.
We may cover some material that is not in our text; e.g,
applications of group-theory for solving certain
games and puzzles.
Our textbook is
Contemporary Abstract Algebra
9th edition.
RS
| Author: | Joseph A. Gallian |
ISBN: | 9781305657960 |
| Year: | 2017 |
Publisher: | Houghton Mifflin |
It is
available from the publisher as well as from online booksellers.
.
Our Teaching Page
has important information for my students.
(It has the
Notes, Exams and Links
from all of my previous courses.)
The Teaching Page has my schedule,
LOR guidelines,
and Usually Useful Pamphlets.
One of them is the
Further information is at our
class-archive URL
(I email this private URL directly to students).
Lyrics for
The Klein Four – Finite Simple Group
are:
The path of love is never smooth
But mine's continuous for you
You're the upper bound in the chains of my heart
You're my Axiom of Choice, you know it's true
But lately our relation's not so well-defined
And I just can't function without you
I'll prove my proposition and I'm sure you'll find
We're a finite simple group of order two
I'm losing my identity
I'm getting tensor every day
And without loss of generality
I will assume that you feel the same way
Since every time I see you, you just quotient out
The faithful image that I map into
But when we're one-to-one you'll see what I'm about
'Cause we're a finite simple group of order two
Our equivalence was stable,
A principal love bundle sitting deep inside
But then you drove a wedge between our two-forms
Now everything is so complexified
When we first met, we simply connected
My heart was open but too dense
Our system was already directed
To have a finite limit, in some sense
I'm living in the kernel of a rank-one map
From my domain, its image looks so blue,
'Cause all I see are zeroes, it's a cruel trap
But we're a finite simple group of order two
I'm not the smoothest operator in my class,
But we're a mirror pair, me and you,
So let's apply forgetful functors to the past
And be a finite simple group, a finite simple group,
Let's be a finite simple group of order two
(Oughter: "Why not three?")
I've proved my proposition now, as you can see,
So let's both be associative and free
And by corollary, this shows you and I to be
Purely inseparable. Q. E. D.
Lyrics by Matt Salomone
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