Universal covers of half-twist Loch-Ness monster surfaces

Research

In [BHS], Hakobyan created the half-twist tight flute surfaces Xa,b with length parameters defined by:

l2n= alog(n+1)+blog(n)  and  l2n+1=(a+b)log(n+1).

We use the same length parameters for the half-twist Loch-Ness monster Xa,b along with the lengths of the fronts of ßn defined by:

l(ßn)=4log(n/(n-1)).

The following are pictures of universal covers of half-twist Loch-Ness monster surfaces.

X5.7,0.8

X5.7,0.8

X4.5,1

X2.2,1.9

X1.2,4

XO.5,6.2

X4,1.5