JOEL HASS

Professor of Mathematics

Tel: (530) 752-1082

Fax: (530) 752-6635

email: hass(at symbol)math.ucdavis.edu

Teaching and Lecturing

In Fall 2008 I am teaching the graduate course in Algebraic Topology:
215A .

I am also running a Research Focus Group on Low dimensional topology. In Fall quarter we will have a series of activities centered on 3-lecture mini-courses that introduce various topics. There will be an organizational meeting to set times for this during the first week of classes. See the website for this group here
Topology RFG 2008 .

Research

Current Areas of Research: Geometry of proteins; Three dimensional manifolds; Applied math; Computational complexity; Computational geometry and topology; Differential geometry; geometric computation; Minimal surfaces and bubbles.

I did some applied work recently related to Computer Aided Design. It can be seen here.

My recent preprints are available on the math arxives, see FRONT .

Click here for information and graphics, on Double Bubbles .

I have looked at various aspects of the motions of curves and surfaces, with dynamics related to the curvature. Click here for material on curve flows: Curve Flow. You can draw a curve and see it flow right over your web browser, using a program written by Rick Vaughn. Try it.

Editorial Boards

I am on the editorial board of
Geometriae Dedicata
and
Media-Enhanced Mathematics

My department profile can be found at: Department of Mathematics Profiles - Hass
It includes a description of my research and links to my publication list.

Calculus

Duane Kouba and I manage a central web site for all things related to calculus at: www.calculus.org.

Kayaking

Some kayaking pictures can be found here: Gorge 5/12/2007. May take a while to download.

Calculus Textbooks

I contributed to the 11th edition of the classic calculus text Thomas' Calculus
It has several versions. In order of publication date they are:

       
1. The standard 11th edition of Thomas' Calculus.
2. The Early Transcendentals 11th edition of Thomas' Calculus. (In early transcendentals textbooks, the trigononometric, exponential and logarithm functions are treated earlier than in the standard version.)
3. The international 11th edition of Thomas' Calculus.

       
1. The standard 1st edition of University Calculus. University Calculus gives a more concise treatment of calculus. This is an early transcendentals textbook.
2. The Alternate 1st edition of University Calculus.
3. The 1st edition of University Calculus Elements. This is also an early transcendentals textbook. It is an even more concise version.

Calculus study guides

I am a coauthor with Colin Adams and Abigail Thompson of the books
How to Ace Calculus and How to Ace the Rest of Calculus