Ohya, Atsushi; Shimizu, Ayaka Lower bounds for the warping degree of a knot projection. (English) Zbl 1504.57011 J. Knot Theory Ramifications 31, No. 13, Article ID 2250091, 9 p. (2022). MSC: 57K10 PDFBibTeX XMLCite \textit{A. Ohya} and \textit{A. Shimizu}, J. Knot Theory Ramifications 31, No. 13, Article ID 2250091, 9 p. (2022; Zbl 1504.57011) Full Text: DOI arXiv
Shimizu, Ayaka Unknotting operations on knots and links*. (English) Zbl 1467.57007 J. Knot Theory Ramifications 30, No. 2, Article ID 2171001, 9 p. (2021). MSC: 57K10 PDFBibTeX XMLCite \textit{A. Shimizu}, J. Knot Theory Ramifications 30, No. 2, Article ID 2171001, 9 p. (2021; Zbl 1467.57007) Full Text: DOI
Shimizu, Ayaka Prime alternating knots of minimal warping degree two. (English) Zbl 1453.57007 J. Knot Theory Ramifications 29, No. 8, Article ID 2050060, 23 p. (2020). Reviewer: Khaled Qazaqzeh (Irbed) MSC: 57K10 PDFBibTeX XMLCite \textit{A. Shimizu}, J. Knot Theory Ramifications 29, No. 8, Article ID 2050060, 23 p. (2020; Zbl 1453.57007) Full Text: DOI arXiv
Shimizu, Ayaka; Takahashi, Rinno Region crossing change on spatial theta-curves. (English) Zbl 1443.57007 J. Knot Theory Ramifications 29, No. 5, Article ID 2050028, 11 p. (2020). MSC: 57K10 57M15 PDFBibTeX XMLCite \textit{A. Shimizu} and \textit{R. Takahashi}, J. Knot Theory Ramifications 29, No. 5, Article ID 2050028, 11 p. (2020; Zbl 1443.57007) Full Text: DOI arXiv
Nelson, Sam; Oshiro, Kanako; Shimizu, Ayaka; Yaguchi, Yoshiro Biquandle virtual brackets. (English) Zbl 1436.57014 J. Knot Theory Ramifications 28, No. 11, Article ID 1940003, 22 p. (2019). Reviewer: Indu R. U. Churchill (Oswego) MSC: 57K12 57K14 PDFBibTeX XMLCite \textit{S. Nelson} et al., J. Knot Theory Ramifications 28, No. 11, Article ID 1940003, 22 p. (2019; Zbl 1436.57014) Full Text: DOI arXiv
Gokan, Yusuke; Katsumata, Hayato; Nakajima, Katsuya; Shimizu, Ayaka; Yaguchi, Yoshiro A note on the cross-index of a complete graph based on a linear tree. (English) Zbl 1400.05140 J. Knot Theory Ramifications 27, No. 11, Article ID 1843010, 24 p. (2018). MSC: 05C45 05C10 57M25 PDFBibTeX XMLCite \textit{Y. Gokan} et al., J. Knot Theory Ramifications 27, No. 11, Article ID 1843010, 24 p. (2018; Zbl 1400.05140) Full Text: DOI arXiv
Jablan, Slavik; Shimizu, Ayaka On the warping sum of knots. (English) Zbl 1401.57016 J. Knot Theory Ramifications 27, No. 11, Article ID 1843002, 8 p. (2018). MSC: 57M25 PDFBibTeX XMLCite \textit{S. Jablan} and \textit{A. Shimizu}, J. Knot Theory Ramifications 27, No. 11, Article ID 1843002, 8 p. (2018; Zbl 1401.57016) Full Text: DOI arXiv
Oshiro, Kanako; Shimizu, Ayaka; Yaguchi, Yoshiro Up-down colorings of virtual-link diagrams and the necessity of Reidemeister moves of type II. (English) Zbl 1387.57015 J. Knot Theory Ramifications 26, No. 12, Article ID 1750073, 17 p. (2017). MSC: 57M25 PDFBibTeX XMLCite \textit{K. Oshiro} et al., J. Knot Theory Ramifications 26, No. 12, Article ID 1750073, 17 p. (2017; Zbl 1387.57015) Full Text: DOI arXiv
Kawauchi, Akio; Shimizu, Ayaka On the orientations of monotone knot diagrams. (English) Zbl 1375.57016 J. Knot Theory Ramifications 26, No. 10, Article ID 1750053, 15 p. (2017). MSC: 57M25 PDFBibTeX XMLCite \textit{A. Kawauchi} and \textit{A. Shimizu}, J. Knot Theory Ramifications 26, No. 10, Article ID 1750053, 15 p. (2017; Zbl 1375.57016) Full Text: DOI
Horiguchi, Kirara; Shimizu, Ayaka; Watanabe, Ryohei; Yaguchi, Yoshiro Axis systems of link projections. (English) Zbl 1372.57013 J. Knot Theory Ramifications 26, No. 8, Article ID 1750043, 12 p. (2017). MSC: 57M25 PDFBibTeX XMLCite \textit{K. Horiguchi} et al., J. Knot Theory Ramifications 26, No. 8, Article ID 1750043, 12 p. (2017; Zbl 1372.57013) Full Text: DOI arXiv
Hayano, Kenta; Shimizu, Ayaka; Shinjo, Reiko Region crossing change on spatial-graph diagrams. (English) Zbl 1336.57008 J. Knot Theory Ramifications 24, No. 8, Article ID 1550045, 12 p. (2015). MSC: 57M25 PDFBibTeX XMLCite \textit{K. Hayano} et al., J. Knot Theory Ramifications 24, No. 8, Article ID 1550045, 12 p. (2015; Zbl 1336.57008) Full Text: DOI
Ito, Noboru; Shimizu, Ayaka The half-twisted splice operation on reduced knot projections. (English) Zbl 1314.57015 J. Knot Theory Ramifications 21, No. 11, Paper No. 1250112, 10 p. (2012). MSC: 57M27 57M25 PDFBibTeX XMLCite \textit{N. Ito} and \textit{A. Shimizu}, J. Knot Theory Ramifications 21, No. 11, Paper No. 1250112, 10 p. (2012; Zbl 1314.57015) Full Text: DOI arXiv
Shimizu, Ayaka The warping polynomial of a knot diagram. (English) Zbl 1270.57049 J. Knot Theory Ramifications 21, No. 14, Paper No. 1250124, 15 p. (2012). Reviewer: Pedro M. González Manchón (Madrid) MSC: 57M27 57M25 PDFBibTeX XMLCite \textit{A. Shimizu}, J. Knot Theory Ramifications 21, No. 14, Paper No. 1250124, 15 p. (2012; Zbl 1270.57049) Full Text: DOI arXiv
Shimizu, Ayaka The warping degree of a knot diagram. (English) Zbl 1204.57008 J. Knot Theory Ramifications 19, No. 7, 849-857 (2010). Reviewer: Sangbum Cho (Riverside) MSC: 57M25 57M27 PDFBibTeX XMLCite \textit{A. Shimizu}, J. Knot Theory Ramifications 19, No. 7, 849--857 (2010; Zbl 1204.57008) Full Text: DOI arXiv