Re: [Origami] looking for Helena Verrill

2015-05-10 Thread NEIL J CALKIN
There appears to be a mathematician of that name at the University of
Warwick in the UK.

http://www2.warwick.ac.uk/fac/sci/maths/people/staff/




Re: [Origami] Fujimoto star spring starting proportions

2014-02-05 Thread NEIL J CALKIN
On Wed, 2014-02-05 at 16:44 -0500, Ralph Jones wrote:
 When I read about someone having this sort of difficulty, I want to remind 
 about using a grid of evenly (equally) spaced lines. Align one edge of your 
 paper from gridline zero, on one corner, to gridline N (odd integer N=eleven, 
 in this case), on the other adjacent corner. Pick an even number 2M less than 
 N (2M=10 is good), and fold the lower corner to gridline 2M, creasing across 
 the paper. Now either M or N-M is even, so it's easy to crease that part of 
 the paper in half. Some folding sequence such as
 
 [M,N-M]=[5,6], [8,3], [4,7], [2,9], [1,10], [6,5], [3,8], [7,4], [9,2], 
 [10,1] gets all N-1 creases to divide the paper into N sections. Crease each 
 section in 2,4,8 . . parts to get 2N, 4N, 8N . .  sections.
 
 This is such a standard technique, I wonder how it is so very frequently 
 missed.
 
 
 Thank you and have a great day! 
 SVBE(si vales, bene est)
 The early bird may get the worm, sure, but the second mouse gets the cheese.
 -
 Cheers, Ralph Jones
 
 
That *is* really nice: essentially Fujimoto's approximate algorithm with
a perfect first guess:-)

Neil