Cody

# John D'Errico

Rank
##### 1370
Score
 E-mail Contact John D'Errico 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, and I do attempt to write new tools to put on the File Exchange when I think I can make a contribution. However, I DON'T answer direct e-mail questions, and I do NOT do homework. In general, your homework is YOUR problem, not mine. Please do NOT e-mail me with your homework problems or student projects. If I was willing to answer your questions, I would very rapidly become overwhelmed, because one question is never just one simple question. When I'm not doing something with MATLAB, you might find me playing bridge, either in the club or online on BBO. Professional Interests: MATLAB, numerical analysis, mathematical modeling Avocational interests: Bridge, woodworking, woodturning Professional Interests Bridge, MATLAB, numerical analysis, mathematical modeling

#### Solver+10

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

#### Commenter+10

Earned on 28 Jan 2012 for commenting on Solution 11462.

#### Promoter+10

Like a problem or solution.

#### Creator+20

Earned on 22 Jul 2016 for creating Problem 42914. Counting the Grand Primes.

#### Speed Demon+50

Earned on 28 Aug 2016 for first solving Problem 42935. Sums of cubes and squares of sums.

#### CUP Challenge Master+50

Earned on 21 Aug 2016 for solving all the problems in CUP Challenge.

Solve a problem with a best solution.

#### 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.

#### ASEE Challenge Master+50

Solve all the problems in ASEE Challenge problem group.

#### Cody Challenge Master+50

Solve all the problems in Cody Challenge problem group.

#### Puzzler+50

Create 10 problems.

#### Scholar+50

Solve 500 problems.

#### Modeling and Simulation Challenge Master+50

Solve all the problems in Modeling and Simulation Challenge problem group.

#### Magic Numbers Master+50

Solve all the problems in Magic Numbers problem group.

#### Famous+20

Must receive 25 total likes for the problems you created.

#### Celebrity+20

Must receive 50 total likes for the solutions you submitted.

#### Renowned+20

Must receive 10 likes for a solution you submitted.

#### Likeable+20

Must receive 10 likes for a problem you created.