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Messages 624 - 653 of 653   Newest  |  < Newer  |  Older >  |  Oldest
Messages: Simplify | Expand   (Group by Topic) Author Sort by Date v
653
video: http://www.youtube.com/watch?v=KVRqS4eDxnk template: http://loki3.com/flex/ennea.html I'm continuing my video series on triangle flexagons with the...
Scott Sherman
loki3s
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Oct 12, 2009
5:32 pm
652
I just spotted a maze somebody else put on a flexagon - http://www007.upp.so-net.ne.jp/ponmama/hekisagon1.htm. The site is in Japanese, but there's enough...
Scott Sherman
loki3s
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Oct 12, 2009
5:32 pm
651
"Serious Fun with Flexagons" looks like a fascinating, comprehensive treatment of the subject, a seminal work. I'm including the link to Amazon below. The...
annschwartz101
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Sep 14, 2009
4:34 am
650
Cool. Glad to see the book is finally out. And judging from the color pictures (http://lespook.files.wordpress.com/2009/08/pook-figs-f-c.pdf), looks like...
Scott Sherman
loki3s
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Sep 10, 2009
1:42 pm
649
My book 'Serious Fun with Flexagons. A Compendium and Guide." has now been published by Springer. They have made a good job of it. The book is up to date to...
Les Pook
toppingleslie
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Sep 8, 2009
5:45 pm
648
I found the 12 leaf hexaflexagon interesting enough that I added some decoration to it and posted a video at http://www.youtube.com/watch?v=hh4mfJDSeNU. I put...
Scott Sherman
loki3s
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Aug 14, 2009
3:39 pm
647
Scott, Indeed 111111111111 has 36 states rather than 12 - I actually meant the number of pinch classes. Also, the distance is 12, not 24 as I wrote. I am...
Yaacov Belenky
ybelenky
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Aug 9, 2009
7:05 pm
646
Yaacov talks about several flexagons in a previous post. To make it easier for others to try them out, I have templates for some of them available at...
Scott Sherman
loki3s
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Aug 8, 2009
3:23 am
645
When I wrote my last message, I ran a program that checked for every strip up to 15 leaves whether there are pairs of states not transformable one to the...
Yaacov Belenky
ybelenky
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Aug 4, 2009
1:02 am
644
After some more experimentation, I've found that there are several more elegant ways to get to that missing state, flexes that don't require an emergency...
Scott Sherman
loki3s
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Aug 4, 2009
1:02 am
643
I believe that there are a lot of pairs of states folded from the same strip that cannot be converted using reasonable flexes, and therefore this result can be...
Yaacov Belenky
ybelenky
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Aug 4, 2009
1:02 am
642
I found the missing state. I should have made one more prediction about it based on the 64 states I found versus the 65 Yaacov predicted. The missing state...
Scott Sherman
loki3s
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Aug 1, 2009
2:44 am
641
Scott,   A nice diagram! Indeed it shows very clearly that tuck flex and pyramid shuffle add a lot to pinch flex and v-flex.   I started to compare it to my...
Yaacov Belenky
ybelenky
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Jul 29, 2009
10:59 pm
640
Interesting. I like having confirmation that almost all the states of that hexaflexagon are mapped out. The 3 missing states when all the leaves are uniquely...
Scott Sherman
loki3s
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Jul 29, 2009
10:59 pm
639
It's interesting to look at how each of the flexes is represented in the state diagram for the 5 sided hexaflexagon. It may be surprising to see that every...
Scott Sherman
loki3s
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Jul 29, 2009
10:59 pm
638
I've diagramed all the states you can get to on a 5 sided hexaflexagon using the pinch flex, v-flex, tuck flex and pyramid shuffle. You can find this diagram...
Scott Sherman
loki3s
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Jul 24, 2009
4:21 pm
637
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...
Scott Sherman
loki3s
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May 30, 2009
1:49 am
636
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...
Scott Sherman
loki3s
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May 30, 2009
1:49 am
635
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? ...
Yaacov Belenky
ybelenky
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May 26, 2009
12:00 am
634
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...
Scott Sherman
loki3s
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May 23, 2009
12:14 am
633
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...
Kathy Knapp
kathyknapp2003
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May 23, 2009
12:14 am
632
I added the tuck flex to the Flexagon Simulator (http://flexagon.vlexo.net/scripts/FlexagonSimulator.cgi). Scott's identity VT=P holds - wherever "vtupu"...
Yaacov Belenky
ybelenky
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May 19, 2009
10:22 pm
631
Nice flex sequence Yaacov. I'll have to give that one a try... Scott Sherman ________________________________ From: "ybelenky@..." <ybelenky@...> ...
Scott Sherman
loki3s
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May 12, 2009
5:15 pm
630
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...
Scott Sherman
loki3s
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May 12, 2009
1:35 am
629
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...
Yaacov Belenky
ybelenky
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May 11, 2009
2:21 pm
628
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...
ybelenky@...
ybelenky
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May 11, 2009
2:21 pm
627
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...
Les Pook
toppingleslie
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May 11, 2009
2:16 pm
626
Scott,   I added the second item from your wishlist to my Flexagon Simulator (http://flexagon.vlexo.net/scripts/FlexagonSimulator.cgi) - to find which...
Yaacov Belenky
ybelenky
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May 11, 2009
2:16 pm
625
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...
Bruce McLean
sir_roberttb...
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May 8, 2009
9:59 pm
624
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...
Scott Sherman
loki3s
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May 7, 2009
4:34 pm
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