论文标题
交叉盖号码和打结预测
Crosscap number and knot projections
论文作者
论文摘要
我们介绍了一个打结型的打结投影，这给出了交叉盖子的上限。我们最多可以用未结式型数来确定结的集合，这意味着最多可以用交叉盖号码来确定一组交替结的经典和新结果。
We introduce an unknotting-type number of knot projections that gives an upper bound of the crosscap number of knots. We determine the set of knot projections with the unknotting-type number at most two, and this result implies classical and new results that determine the set of alternating knots with the crosscap number at most two.
