PLEASE REFRESH THE PAGE AT EACH VISIT!
Welcome to Math 3250: Combinatorics, this Spring 2020! Today is
.
Main Page (Schedule and lecture notes)
See also UConn Calendar for Spring 2020 for important deadlines and other dates.
Lecture notes used in video lectures
Lecture Videos
Please let me know which platform is more convenient (try playing on your laptop and smart phone)
Links to relevant videos
News: You have until May 15 (this is after you see your grade) to put a course on pass/fail or letter grade. You have until the last day of classes to withdraw from any course and switch to Pass/Fail grading.
CURRENT: Finals Week (May 4 – 9)
 Due Friday, Apr 8 at 5pm Portfolio Problems 3, template file portfolio3.tex and Figure portfolio3fig.pdf
 In the Overleaf project (I created for you), make a new folder called portfolio3, and upload the template file there. Put your homework source code there.
 Also send the PDF as an email attachment
 If you want extra help with the Overleaf homework, we can do a class meeting on Thurs, 13pm
Past: Week 15 (Apr 27 – May 1)
Past: Week 14 (Apr 20 – 24)
Past: Week 13 (Apr 13 – 17)
No new videos, no new homework this week
Past: Week 12 (Apr 6 – 10)
Past: Week 11 (March 30 – April 3)
Past: Week 10 (Mar 23 – Mar 27)
Past: Week 9 (Mar 16 – 20) SPRING BREAK
Past: Week 8 (Mar 9 – 13)
 Tue d1
 Tue d1 inclass: Finish Sec 8.1.2.1. Catalan numbers, using triangulations.
 Practice HuskyCT Blackboard Collaborate and Google Hangout
 Thurs d2
 Thurs d2 inclass: Explain Sec 8.1.3. Continue Chapter 8, work in
 Scribble Together Whiteboard for watching the lecture live from your browser. We will use Webex instead. Check your email for the Webex remote address, and email me if you cannot get into the remote room.
Past: Week 7 (Mar 2 – 6)
 Tue d1
 Before class, review the computation from Sec 8.1.1 Recurrence relation and ordinary generating function
 Before class, read the first two pages of Sec 8.1.2 Products of generating function
 Tues d1 inclass: Lecture Example 8.8 from Sec 8.1.2 Products of generating functions; Show four types of Catalan objects (students find the 14 objects for n=4), see Sec 8.1.2.1.
 Thurs d2
 Thurs d2 inclass: Continue Chapter 8
Past: Week 6 (Feb 24 – Feb 28)
 Tue d1 inclass: Lecture 8.1.1 Recurrence relation and ordinary generating function
Study Guide: Chapters 1–4, Problems Week 6 (Prep for Exam 1), solution key
Past: Week 5 (Feb 17 – 21)
 Tue d1
 Tue d1 inclass: lecture Sec 4.2 Multinomial Theorem and 4.3 General Binomial Theorem (review Taylor series!)
 Thurs d2
 Due your writeup (presentation notes), and be ready to present
 Go to Google Doc
 Next to your name, write at least one problem from Problems Week 4 and one from Problems Week 5. It’s OK if other students pick the same problems.
 Optional: Show me the problems on Wed or Thurs (before class) so I can give feedback
 Submit your chosen problems, either handwritten or using LaTeX — show all explanation and computation, not just the answer
 Everyone should be prepared to present any of the problems which they submit (I will use dice)
 Bring your calendar to class. I will ask you to vote an exam date next week or the following week.
 Thurs d2 inclass: Problem presentations of JJTSJA (labeled presentation 7 in grade book), and short lecture on motivation for ordinary generating function (Sec 8.1)
Past: Week 4 (Feb 10 – 14)
 Thurs d2 inclass: Sec 4.1 Binomial Theorem and proving identities combinatorially
Past: Week 3 (Feb 3 – 7)
Past: Week 2 (Jan 27 – Jan 31)
Past: Week 1 (Jan 21 – 25)
 Tue d1: Class introduction, Lecture on Sec 1.11.2 PigeonHole Principle

Thurs d2:
Due at the end of class, either handwritten or typed Reading HW 1 PDF – if you are interested you can see the .tex source. If you are not presenting, there will be time to ask questions/ complete the problems during class on Thursday (while the presenters are setting up).
 Thurs d2 inclass: Dana Ernst’s Setting the Stage 4 questions, presentations (1 Tiffany, 2 Jason, 3 Jeffrey, 4 Robin), audience (everyone)