Rafael B Andrist,Frank Kutzschebauch
Rafael B Andrist
We introduce the notion of the algebraic overshear density property which implies both the algebraic notion of flexibility and the holomorphic notion of the density property. We investigate basic consequences of this stronger property, and ...
Johanna Lercher,Daniel Scharler,Hans-Peter Schröcker et al.
Johanna Lercher et al.
We consider polynomials of bi-degree (n, 1) over the skew field of quaternions where the indeterminates commute with each other and with all coefficients. Polynomials of this type do not generally admit factorizations. We recall a necessary...
Propagation of curved folding: the folded annulus with multiple creases exists [0.03%]
折纸传播：具有多条折痕的环面存在性问题
Leonardo Alese
Leonardo Alese
In this paper we consider developable surfaces which are isometric to planar domains and which are piecewise differentiable, exhibiting folds along curves. The paper revolves around the longstanding problem of existence of the so-called fol...