JK Contradance calling
L0 Contradance program
L1 Contradance program
L2 Contradance program
L3 Contradance program
L4 Contradance program
L5 Contradance program
Michael Dyck's Contradance Index
Footnote, good books
SeLo 2020t, both sections
MAA4402 8436(15961) Functions Complex Var. MWF6[12:50-13:40] LIT223
Aut2021: MAA5404 8442(15579) Intro Complex Var. MWF6 LIT223 (CE)
We are sorry, but the number you have dialed is imaginary.
Please rotate your phone by 90 degrees and try again.
Our Teaching Page
has useful information for students in all of my classes.
It has my schedule,
and Usually Useful Pamphlets.
One of them is the
which gives pointers on what I consider to be good mathematical
Further information is at our
(I email this private URL directly to students).
[that was due Thursday, 09Dec2021]
now has a
version with all solutions.
- W: Gamma function
and jk: gamma and Gamma (pdf),
as well as
An application is computing
Volume of the n-ball (pdf).
went off without a hitch.
A panoply of nice Residue and Contour-integral problems
led admirers to praise the straight-forwardness of the problems,
and the simple yet elegant layout on the page.
- Conveniently, in one location, all
Plex quizzes this semester (pdf).
- PlexNotes (pdf).
with several examples of contour integration.
Available also is an
exposition of Taylor's Thm on R.
- The useful W: Jordan's lemma
to an integral along a semicircle goes to zero, as
the radius goes to infinity.
- A First Course in Complex Analysis
[PDF identical to paperback]
are made freely available by the authors,
Matthias Beck, Gerald Marchesi, Dennis Pixton & Lucas Sabalka.
It is from
Prof. Beck's website.
- Look what the cat dragged in...
that allows “infinity ” and “-infinity ”
to be typed as the Limits-of-Integration.
elicited shouts of enthusiasm. Admirers remarked on its minimalistic
two-tone format, and marveled at the essay question's similarity to
a proof done in class, and in PlexNotes. A
declared all the major newspapers... and NPR!
(And we have
Class-W solns online.)
(happily added to Class-W score)
now has all solns.
Please let me know of errors.
(BTWay, the Bonus was due Monday, 08Nov2021.)
- Some typeset solns to HW problems.
- Our exciting
took place on Wednesday, 06Oct2021, in class.
Folks enjoyed that it was staggeringly similar to the previously posted
Practice problems PDF,
and that three of those problems were solved in class.
all solns to Class-V.)
Plex 2021t syllabus with exam-dates.
- A C-infinity function which is not everywhere analytic (pdf).
- Nostalgic?, see
- An online
[I haven't played with it much, so cannot vouch for accuracy. Note that
extending logarithm to the Complex plane involves choices, as complex log() is multi-valued;
be cautious with the log() symbol on this calculator.]
- The useful Math-Greek alphabet (pdf).
Assignment for first week of class; please complete
by Sunday, 29Aug2021:
(See below, for the materials referred to.)
- Learn the Math-Greek alphabet.
- In my PlexNotes, read pages 1-4, memorize abbreviations
in Appendix: Notation (pp.24-25, currently),
and review Binomial coefficients
in Appendix B: Binomials.
- In our text B&C
[Brown & Churchill],
read pages 1-39 and write-up
(but do not hand-in) at least 3 HW problems
from those pages.
- Get the basics of
(up through “Equivalent predicates...”).
For us, the (double-bar N)
i.e zero is a natural number, a natnum.
for the set of positive integers; the posints.
- Refresh your memory on your Calc 2. Taylor series material
(absolute/conditional convergence, radius of convergence, Taylor polynomial and error term, etc.)
Our textbook is
Complex Variables and Applications,
|Author: ||Brown, Churchill
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.
The various Math czars who help out:
JK Home page