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+ - Sudden Demand for Logicians on Wall Street-> 1

Submitted by Anonymous Coward
An anonymous reader writes "In an unexpected development for the depressed market for mathematical logicians, Wall Street has begun quietly and aggressively recruiting proof theorists and recursion theorists for their expertise in applying ordinal notations and ordinal collapsing functions to high-frequency algorithmic trading. Ordinal notations, which specify sequences of ordinal numbers of ever increasing complexity, are being used by elite trading operations to parameterize families of trading strategies of breathtaking sophistication. Ordinal notation high-frequency trading algorithms pit their strategies against similar algorithmic opponents on electronic exchanges for a few fleeting seconds, during which thousands of trades are executed, including exploratory trades that test the strategies of opposing human and machine traders.

The monetary advantage of the current strategy is rapidly exhausted after a lifetime of approximately four seconds–an eternity for a machine, but barely enough time for a human to begin to comprehend what happened. The algorithm then switches to another trading strategy of higher ordinal rank, and uses this for a few seconds on one or more electronic exchanges, and so on, while opponent algorithms attempt the same maneuvers, risking billions of dollars in the process."

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Sudden Demand for Logicians on Wall Street

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  • When you put this sort of reactive control equipment on system, and you don't bench-test the hell out of it to move its poles and zeroes around (or whatever analogue exists for your nonlinear control method), you are GUARANTEED to have unstable modes.

    And this system still has the life-savings of millions of people in it.

    And very few of them even know that some of the "people" trading on the system are actually computers.

    And none of them, until now, because I'm the first one saying it, has had the first clue

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