AMS and ACGT Seminar, Jim Swift

# AMS and ACGT Seminar

## Applied Math Seminar (AMS)

### Fall 2016

Coupled Oscillators

### Spring 2014

Ridders' Method. Here are a few Mathematica notebooks; rootfindingwithbracketing.nb and rootfindingwithbracketingfigures.nb.

### Fall 2013

Finding periodic orbits in the Lorenz Attractor. Here is a cdf of the banner image at the math department site. This shows two periodic orbits: L9R and R9L. Here is the Mathematica notebook that produced that image.

## Algebra, Combinatorics, Geometry and Topology (ACGT) seminar series at NAU

The logo for ACGT is a picture of the biology building at Rice University, at which location the letters stand for Adenine, Cytosine, Guanine, and Thymine, the four nucleic acid bases that make up DNA.

### Fall 2014

I did this example of the Petrie of the Tetrahedron as a "homework" for of Steve Wilson's series entitled "Operators on Maniplexes, whatever they are".

### Spring 2013:

Figure inspired by Mike Falk's talk on Jan. 22.

Mathematica demonstration 4 ODEs used in Jim Swift's AMS 2013-02-28.

### Fall 2012

Dana Ernst gave several talks about Coxeter groups. I made several drawings scanned here:
Tiling of elements of the Coxeter Group < s1, s2, s3 : e = s12 = s22 = s32 = (s1 s2)3 = (s2 s3)3 = (s3 s1)3 > = Ã2 in terms of Coxeter Generators
Tiling of elements of the Coxeter Groups I and < s1, s2, s3 : e = s12 = s22 = s32 = (s1 s2)4 = (s2 s3)4 > = C2-tilde in terms of Coxeter Generators
Tiling of elements of the Coxeter Group < s1, s2, s3 : e = s12 = s22 = s32 = (s1 s2)4 = (s2 s3)4 > = C2-tilde in terms of heaps

### Spring 2012

February 2, 9, 16: Jim Swift talked on three subjects:

TOOT and OTTO. A "simple strategy game for ages 4-8". Here is a proposal for game notation.

Efforts to make a really big image of the Logistic Map Bifurcation Diagram (6957 KB). This one is 6800 x 2300 pixels, which is 34 in x 11.5 in at 200 dpi. Physics has a color printer that can print 34 inches by any length. My goal to to make a huge bifurcation diagram with 20000 x 6800 pixels, which is 100 in x 34 in at 200 dpi, for the halls of the Math building.
Here is a small copy of the Mural that should be at the Lumberjack Mathematics Center. The bit-mapped part in the upper right corner (which didn't get printed at the LMC) is 29,754 x 9,000 pixels in the full-sized original.

Symmetric Embeddings of Graphs. Here is an example for the Petersen Graph

# Neuberger-Swift Seminar

### Fall 2014

Mathematica notebook with an example of the polynomial f trick for the GNGA.