IS THE MISSING AXIOM OF MATROID THEORY LOST FOREVER
IS THE MISSING AXIOM OF MATROID THEORY LOST FOREVER
复制标题
拟阵理论中缺失的公理是否永远消失了
DOI:
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发表时间:
2014
期刊:
影响因子:
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通讯作者:
G. Whittle
中科院分区:
文献类型:
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作者:
Dillon Mayhew;Mike Newman;G. Whittle
We conjecture that it is not possible to finitely axiomatize matroid representability in monadic second-order logic for matroids, and we describe some partial progress towards this conjecture. We present a collection of sentences in monadic second-order logic and show that it is possible to finitely axiomatize matroids using only sentences in this collection. Moreover, we can also axiomatize representability over any fixed finite field (assuming Rota’s conjecture holds). We prove that it is not possible to finitely axiomatize representability, or representability over any fixed infinite field, using sentences from the collection.