The Tait First and Second Conjectures for Alternating Periodic Weaves

A periodic weave is the lift of a particular link embedded in a thickened surface to its universal cover. Its components are infinite unknotted simple open curves that can be partitioned in at least two distinct sets of threads. The classification of periodic weaves can be reduced to the one of their generating cells, namely their weaving motifs. However, this cannot be achieved through the classical theory of links in a thickened surface since periodicity in the universal cover is not encoded. In this paper, the Tait first and second conjectures are extended to minimal reduced alternating weaving motifs. The first one states that any minimal alternating reduced weaving motif has the minimum possible number of crossings, while the second one formulates that two such oriented weaving motifs have the same writhe.

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