Resumé:
Jim Serwer
Software Consultant
408-985-6615
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I have worked on the following projects related to Numerical Analysis and Scientific Programming.

TUTSIM

TUTSIM simulates an analog computer. It is a powerful tool for modeling continuous dynamic systems.

Much of my work on TUTSIM involved porting the user interface from MS-DOS to Windows. But I also did some important work on its numerical analysis component. I found and fixed several bugs in math algorithms. I added Fast Fourier Transforms. I added Bode plots of model output.

Calculator Simulator

In 1984 I wrote one of the first PC calculator simulators, called SlipStick, for MS Dos. SlipStick is the most mathematically advanced calculator I have ever seen.

In addition to all the standard functions for scientific calculators SlipStick has buttons to calculate Chi-Square, Complete Elliptic Integrals, Matrix inverse and determinant up to 5*5, Hyperbolic Functions, Gamma Function, Jacobian Elliptic Functions, vector operations, et cetera.

Random numbers can be uniform, normal, or poisson. SlipStick's random number generator passes randomness tests that the standard C library of its day fails.

SlipStick can find all the zeros of a ninth degree polynomial without a starting guess.

(SlipStick all fit in 128 KBytes before 640 KBytes became a standard feature on new PC's. The name "SlipStick" was chosen at a time when most people remembered slide rules.)

Engineering Support

In 1967 I was a support programmer for design engineers. One large project was a simulation of the XB70 Experimental Bomber. This required the simultaneous solution of about forty differential equations.

Cryptography

I have coded the RSA public-key encryption algorithm. This is used by my shareware product SignetSure. I could not find sample code, so I wrote my own programs starting from the number-theory proof of the algorithm.

Educational Background

I have a Bachelor of Science degree in Physics and a Master of Science degree in Mathematics, both from the University of Chicago. I also attended Wayne State University for one year taking graduate classes in Mathematical Statistics.