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John D'Errico

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Company/University

Retired

Personal Profile

Mainly retired from Eastman Kodak. (Of course, Kodak itself is now semi-retired. I don't think I had any influence in that.) I still write MATLAB code as I find something interesting, but I DON'T answer your questions, and I do NOT do homework. Your homework is YOUR problem, not mine. Do NOT e-mail me with your homework problems or student projects. When I'm not doing something with MATLAB, you might find me playing bridge.

Professional Interests

Bridge, MATLAB, numerical analysis, mathematical modeling

1491Rank
2Badges
290Score

Solver +10

Earned on 28 Jan 2012 for solving Problem 1. Times 2 - START HERE.

Promoter +10

 

Like a problem or solution.

Commenter +10

Earned on 28 Jan 2012 for commenting on Solution 11462.

Creator +20

 

Create a problem.

Speed Demon +50

 

Solve a problem first.

Leader +20

 

Solve a problem with a best solution.

CUP Challenge Master +50

 

Solve all the problems in CUP Challenge problem group.

Quiz Master +20

 

Must have 50 solvers for a problem you created.

Tiles Challenge Master +50

 

Solve all the problems in Tiles Challenge problem group.

Cody Challenge Master +50

 

Solve all the problems in Cody Challenge problem group.

ASEE Challenge Master +50

 

Solve all the problems in ASEE Challenge problem group.

Puzzler +50

 

Create 10 problems.

Scholar +50

 

Solve 500 problems.

Renowned +20

 

Must receive 10 likes for a solution you submitted.

Famous +20

 

Must receive 25 total likes for the problems you created.

Celebrity +20

 

Must receive 50 total likes for the solutions you submitted.

Likeable +20

 

Must receive 10 likes for a problem you created.