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Jun 30, 2019 at 16:20 comment added lambda I've seen matroid theorists call this the "cocycle space", at least when working over $\mathbb F_2$. For graphs it's the cut space which is a fairly standard object. Tutte's theory of "chain groups" amounts to studying matroids via arrangement spaces.
Jun 30, 2019 at 16:00 history edited M. Winter CC BY-SA 4.0
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Jun 30, 2019 at 0:16 history edited M. Winter CC BY-SA 4.0
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Jun 30, 2019 at 0:09 history asked M. Winter CC BY-SA 4.0