# Music, Sparse Matrices, and London Billboards

Posted by Cleve Moler,

# The Tektronix 4081

Posted by Cleve Moler,

The Tektronix 4081 minicomputer at Argonne National Laboratory in the summers of 1977 and '78 played an important role in the early development of MATLAB.... read more >>

# Surprising SVD, Square Waves, and Pi

Posted by Cleve Moler,

I am surprised when many of the singular values of a nonsymmetric variant of the Hilbert matrix turn out to be nearly equal to $\pi$. The explanation involves the Fourier series for a square wave.... read more >>

# Magic Stars

Posted by Cleve Moler,

Magic Stars are a little like Magic Squares. My grandson was introduced to them in his junior high school math class.... read more >>

# The Rosser Matrix

Posted by Cleve Moler,

The Rosser matrix is a classic matrix eigenvalue test problem.... read more >>

# Fiedler Companion Matrix

Posted by Cleve Moler,

The Fiedler companion matrix distributes the coefficients of a polynomial along the diagonals of an elegant pentadiagonal matrix whose eigenvalues are equal to the zeros of the polynomial.... read more >>

# The Ardent Titan, part 22

Posted by Cleve Moler,

Even though I am one of the founders of the MathWorks, I only acted as an advisor to the company for its first five years. During that time, from 1985 to 1989, I was trying my luck with two Silicon Valley computer startup companies. Both enterprises failed as businesses, but the experience taught me a great deal about the computer industry, and influenced how I viewed the eventual development of MATLAB. The second startup was known as Ardent Computer for most of its brief existence.... read more >>

# The Ardent Titan, part 13

Posted by Cleve Moler,

Even though I am one of the founders of the MathWorks, I only acted as an advisor to the company for its first five years. During that time, from 1985 to 1989, I was trying my luck with two Silicon Valley computer startup companies. Both enterprises failed as businesses, but the experience taught me a great deal about the computer industry, and influenced how I viewed the eventual development of MATLAB. The second startup was known as Ardent Computer for most of its brief existence. We built a machine known as the Titan.... read more >>

# The Intel Hypercube, part 2, reposted

Posted by Cleve Moler,

The first posting earlier today was truncated. Here is the complete post. Even though I am one of the founders of the MathWorks, I only acted as an advisor to the company for its first five years. During that time, from 1985 to 1989, I was trying my luck with two Silicon Valley computer startup companies. Both enterprises failed as businesses, but the experience taught me a great deal about the computer industry, and influenced how I viewed the eventual development of MATLAB. This post continues the discussion of the Intel Personal Supercomputer... read more >>

# The Intel Hypercube, part 2

Posted by Cleve Moler,

The Intel Hypercube, part 2  The Intel Hypercube, part 2See The Intel Hypercube, part 2, reposted Get the MATLAB code (requires JavaScript) Published with MATLAB® R2013b Published with MATLAB® R2013b... read more >>

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