# Season’s Greetings

Posted by Cleve Moler,

Season's Greetings help greetings % greetings Seasonal holiday fractal. % greetings(phi) generates a seasonal holiday fractal that depends % upon the parameter phi. The default value of phi is the golden ratio. % What happens for other values of phi? Try both simple fractions %... read more >>

# Post About 1976 SVD Film Is Available

Posted by Cleve Moler,

Several days ago I accidentally triggered a premature annoucement of a post about a "1976 Matrix Singular Value Decomposition Film". Many readers who tried to find that post were greeted with an unwelcome 404 error message, "Not Found". The post is now available: Last week's post.... read more >>

# 1976 Matrix Singular Value Decomposition Film2

Posted by Cleve Moler,

This blog is about a film that I made in 1976. Here is the link to a digital copy on YouTube: http://youtu.be/R9UoFyqJca8.... read more >>

# Magic Squares Meet Supercomputing

Posted by Cleve Moler,

I have just returned from the huge Supercomputing 2012 conference in Salt Lake City. I can report on interesting reactions to some questions I posed in last week's blog and on some impressive speedup results when we ran the code in last week's blog on a parallel cluster in the Cloud.... read more >>

# Magic Squares, Part 3, Linear Algebra4

Posted by Cleve Moler,

We know a little bit, but not much, about the linear algebraic properties of magic squares. ... read more >>

# Magic Squares, Part 2, Algorithms

Posted by Cleve Moler,

... read more >>

# Magic Squares, Part 1, Low Order1

Posted by Cleve Moler,

With origins in centuries old recreational mathematics, magic squares demonstrate MATLAB array operations. ... read more >>

# China Trip Report4

Posted by Cleve Moler,

I have just completed a wonderful trip, a two-week lecture tour of eight universities in five cities in China. I was accompanied on the trip by David Chen from the MathWorks office in Shanghai and Cecilia Liu from our Beijing office. We made a side trip to the Giant Panda Conservation Research Base, in Chengdu, Sichuan Province, central China, where we had an opportunity to meet this fellow, who is not a MATLAB user.... read more >>

# CHEBFUN, Snake2

Posted by Cleve Moler,

Chebfun revives a classic video game, with a few mathematical twists (literally)... read more >>

# CHEBFUN, Roots

Posted by Cleve Moler,

The ROOTS function in Chebfun is one of its most powerful features. This is the second part of my series on Chebfun. Part one is here. ... read more >>