Raphael APPENZELLER

With @JPQ we found this genus-0 surface with three boundary components: a figure-8 knot, and two trefoils (one left-handed and the other right-handed). It turns out that such a surface exists for any three knots and we wrote a paper about it:

https://arxiv.org/abs/2607.12729

The three illustrations were done using crochet, 3D-printing, and Inkscape.

#math #knots #crochet #3Dprint #inkscape

Linoljemaling: Slik maler du med linolje!

https://peertube.ra.no/w/w4yusBvPLRozgoiYRHG6SL

Linoljemaling: vedlikehold og ettersyn

https://peertube.ra.no/w/4WMgnYvPUEXGNFxKmhUb12

Linoljemaling: Før du maler!

https://peertube.ra.no/w/ebVyppouP4YAw953y6goh2

Linoljemaling: hva skal jeg male med?

https://peertube.ra.no/w/mde7FiT4X617L9zbRmNxuk