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Math Help - oriented matroids

  1. #1
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    oriented matroids

    Hello everyone. I'm a newbie to the study of oriented matroids, so if anyone can help me determine what I have attached, I would appreciate it! The beginning includes some notation.
    Attached Thumbnails Attached Thumbnails oriented matroids-example.jpg  
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  2. #2
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    Re: oriented matroids

    Hey logicamente.

    Did you try taking an arbitrary vector and expanding it out (using the M matrix) and then finding the conditions to have a +, -, or 0 in the final output?

    In other words, take a random vector v and look at the sign of Mv.
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