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ILYA BOGUSLAVSKY e-mail: ibogus @ yahoo.com





Interactive Logical Tests:

COP & THIEF - The City of Moscow math olympiad for high school seniors, 1978, the finals.

ALI-BABA - The Moscow Institute of Physics & Technology math olympiad.

Blind ALI-BABA - A more difficult version of the Ali-baba.


Problems:

Olympiad - Problems for math Olympiads.


Games:

3 X 3 - "Maximize your product" on a 3 by 3 board.

BlackJack - Jail BlackJack.


Publications:

Geometric Factorial Designs - published 2020.


Exercises for Testers:

Revenue Report - Find what's wrong there, identify the developer's errors and suggest how to fix them.

XMas Obfuscated "C" program - There is a spelling error in the output. How would you fix it?


Pristine Time Series:

Time Series Maintenance. - Practitioner's observations about historical market data.

Flash Crash. - The story of Flash Crash as told by the daily closing stock price of one of the major banks, JP Morgan Chase.

Stress Test. - Notes on Fed Supervisory Scenarios.


Weakness of the New Jersey PATH SmartLink cards:

Vulnerability of the New Jersey PATH SmartLink cards. - The rule determining validity of Serial Numbers is easily discoverable. That enables wrongdoers to steal electronically the cards that have not been registered by their owners.


Taxation:

School Tax Inequality. - In Pennsylvania, North Pocono School District materially overtaxes Lehigh Township.


Nature Photos:

Florida. - Palm City, Florida.

Pennsylvania. - Lake Watawga, Pocono Mountains.


Notes on the American justice system:

Chatham NJ - Municipal court transcript. - Torture as an instrument to extract confession would become unnecessary if the court could attribute to the defendant any statement the court likes. Simply read the transcript, no explanations are necessary.

Chatham NJ - Municipal court transcript. - The same proceedings as above. The court freely makes up facts to satisfy the prosecutor.

Chatham NJ - Municipal court transcript. - The same judge makes an incorrect statement about what the shortest travel route is, and on the basis of that incorrect statement draws conclusions about the defendant's state of mind.

Chatham NJ - Municipal court transcript. - Another exchange from the same trial. The transcript speaks for itself.