Create a MATLAB® graph object from information about neighbors among the 48 contiguous states in the USA.... read more >>

# Graph Object of 48 USA States

Posted by **Cleve Moler**,

Blogs

Posted by **Cleve Moler**,

Create a MATLAB® graph object from information about neighbors among the 48 contiguous states in the USA.... read more >>

Posted by **Cleve Moler**,

I probably first saw this matrix in 1960 in John Todd's class at Caltech. But I forgot about it until Tahar Loulou jogged my memory with a comment following my blog post in late May. It deserves a place in our gallery of interesting matrices.... read more >>

**Category:**- History,
- Matrices,
- Numerical Analysis,
- People

Posted by **Cleve Moler**,

MIT's Professor Gil Strang gave two talks in one morning recently at the SIAM annual meeting. Both talks derived from his experience teaching a new course at MIT on linear algebra and neural nets. His first talk, "The Structure of a Deep Neural Net", was in a minisymposium titled "Deep Learning and Deep Teaching", which he organized. Another talk in that minisymposium was by Drexel's Professor Pavel Grinfeld on "An Informal Approach to Teaching Calculus." An hour later, Gil's gave his second talk, "Teaching About Learning." It was an invited talk at the SIAM Conference on Applied Mathematics Education.... read more >>

Posted by **Cleve Moler**,

David Wilson, from the Auckland University of Technology in New Zealand, has alerted me to this remarkable coincidence. Here is the "Burning Ship" from my post about fractals four weeks ago.... read more >>

Posted by **Cleve Moler**,

Here are the first 12 integers from an infinite sequence defined by a deceptively simple rule. Can you see the pattern? Try to predict the next number in the sequence.... read more >>

Posted by **Cleve Moler**,

If you follow this blog regularly, you know that I love fractals. I recently spent a pleasant afternoon in Nashua, New Hampshire, where my daughter Teresa introduced me to Gregory Searle, a fractal artist and computer geek. Here is his logo.... read more >>

Posted by **Cleve Moler**,

I first saw this game years ago in the Exploratorium, a science museum in San Francisco. You are given a computer screen with two color patches and three sliders. One of the color patches is fixed. The sliders control the red, green and blue components of the other patch. Your task is to adjust the sliders until the two patches are the same color. It ain't easy.... read more >>

Posted by **Cleve Moler**,

Camille Jordan (1838-1922)... read more >>

**Category:**- Eigenvalues,
- History,
- Matrices,
- Numerical Analysis,
- Symbolic

Posted by **Cleve Moler**,

The ACM Special Interest Group on Programming Languages, SIGPLAN, expects to hold the fourth in a series of conferences on the History of Programming Languages in 2020, see HOPL-IV. The first drafts of papers are to be submitted by August 2018. That long lead time gives me the opportunity to write a detailed history of MATLAB. I plan to write the paper in sections, which I'll post in this blog as they are available. This is the seventh, and final, installment.... read more >>

**Category:**- History,
- Supercomputing,
- Symbolic

Posted by **Cleve Moler**,

The ACM Special Interest Group on Programming Languages, SIGPLAN, expects to hold the fourth in a series of conferences on the History of Programming Languages in 2020, see HOPL-IV. The first drafts of papers are to be submitted by August 2018. That long lead time gives me the opportunity to write a detailed history of MATLAB. I plan to write the paper in sections, which I'll post in this blog as they are available.... read more >>

**Category:**- Calculus,
- Differential Equations,
- Graphics,
- History

*These postings are the author's and don't necessarily represent the opinions of MathWorks.*

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