Flexagon_Lovers at Yahoo! Groups

video: flexagon illusion

Scott Sherman — Sat, 30 May 2009 01:49:39 GMT

I've posted a new video at http://www.youtube.com/watch?v=iDN1Tbsxkec that shows one sort of illusion you can make on a flexagon. I start out by showing how

Re: Tuck flex added to the flexagon simulator

Scott Sherman — Sat, 30 May 2009 01:49:39 GMT

Well, you now support what I think of as the most basic flexes on the hexaflexagon, the pinch, v and tuck. They each require at least 9 leaves for the minimal

Re: Tuck flex added to the flexagon simulator

Yaacov Belenky — Tue, 26 May 2009 00:00:26 GMT

Scott, Yes, tuck flex fits into my framework, and I believe any other flex does as well. What's the next flex that you would like me to add to the simulator?

Re: Tuck flex added to the flexagon simulator

Scott Sherman — Sat, 23 May 2009 00:14:26 GMT

Yaacov, did you find a way to fit the tuck flex into your current framework of the flexagon formulas and edge weights? Will it extend to other flexes? As

Tetrahedral Kite

Kathy Knapp — Sat, 23 May 2009 00:14:14 GMT

Looks like it could be fun to build and fly http://www.instructables.com/id/Bell-Tetrahedral-Kite/ Bell Tetrahedral Kite Alexander Graham Bell used tetrahedral

Tuck flex added to the flexagon simulator

Yaacov Belenky — Tue, 19 May 2009 22:22:29 GMT

I added the tuck flex to the Flexagon Simulator (http://flexagon.vlexo.net/scripts/FlexagonSimulator.cgi). Scott's identity VT=P holds - wherever "vtupu"

Re: A sequence for 6-flexagon inversion

Scott Sherman — Tue, 12 May 2009 17:15:22 GMT

Nice flex sequence Yaacov. I'll have to give that one a try... Scott Sherman ________________________________ From: "ybelenky@..."

Re: describing flex sequences

Scott Sherman — Tue, 12 May 2009 01:35:49 GMT

Interesting. I always assumed the V was simply because of the shape involved. Ah yes, you can do the v-flex on other triangles flexagons. I had tried various

Re: A sequence for 6-flexagon inversion

Yaacov Belenky — Mon, 11 May 2009 14:21:57 GMT

By the way, there is a simple proof that the number of v-flexes (11) in this sequence is the minimal possible (assuming that only pinch flexes and v-flexes

A sequence for 6-flexagon inversion

ybelenky@... — Mon, 11 May 2009 14:21:56 GMT

A 6-flexagon from 18-leaf straight strip has just two V-classes with rotational symmetry of order 3. Here is the sequence to flex it from one of these

The V-flex

Les Pook — Mon, 11 May 2009 14:16:44 GMT

Bruce Thanks for the information about your paper 'The combinatorics of all regular flexagons'. I've downloaded the paper, and am now trying to digest it. Les

Re: New flexagon page

Yaacov Belenky — Mon, 11 May 2009 14:16:34 GMT

Scott, I added the second item from your wishlist to my Flexagon Simulator (http://flexagon.vlexo.net/scripts/FlexagonSimulator.cgi) - to find which

Re: describing flex sequences

Bruce McLean — Fri, 08 May 2009 21:59:55 GMT

I do not think the following statement is true. "the v-flex only works on flexagons made of equilateral triangles" I named the V-flex for my students Alan

Re: New flexagon page

Scott Sherman — Thu, 07 May 2009 16:34:59 GMT

I agree that a flexagon simulation is better aimed at exploring certain ideas rather than provide a full interactive animated experience. But given the visual

Re: describing flex sequences

Scott Sherman — Thu, 07 May 2009 16:34:24 GMT

Agreed, <-1=> looks a bit nonsensical as a math formula. So I've switched the silver tetra flex from R to St to leave RLU as alternates to ><^. Sounds like a