Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: Steven Cullinane is a Crank
Replies: 8   Last Post: Dec 31, 2005 4:19 AM

 Messages: [ Previous | Next ]
 crankbuster Posts: 21 From: Srilanka Registered: 7/5/05
Re: Steven Cullinane is a Crank
Posted: Jul 7, 2005 9:51 AM

Reference: http://m759.freeservers.com/
-------------------------------------------------------
"The Diamond Theorem:
Inscribe a white diamond in a black square.
Split the resulting figure along its vertical and horizontal midlines
into four quadrants so that each quadrant is a square divided by one of
its diagonals into a black half and a white half. Call the resulting
figure D.

Let G be the group of 24 transformations of D obtained by randomly
permuting (without rotating) the four quadrants of D. Let S4 denote the
symmetric group acting on four elements. Then

(1) Every G-image of D has some ordinary or color-interchange symmetry
(see below),

(2) G is an affine group generated by S4 actions on parts of D, and

(3) Results (1) and (2) generalize, through intermediate stages, to
symmetry invariance under a group of approximately 1.3 trillion
transformations generated by S4 actions on parts of a 4x4x4 cube."
--------------------------------------------------------

What does (2) mean? By Cullinane's definition of G, G is isomorphic to
S4, the symmetric group on 4 letters, with 24 elements. What does he
mean by saying G is generated by S4 actions? Every group generates
itself as its own subgroup! This is a theorem?

What does (3) mean? Generalize how? What is "approximately 1.3
trillion"? What "parts" of a 4x4x4 cube? Who is Cullinane trying to
fool?

See the "4x4 Case" following the "theorem". Cullinane states that "G is
a group of 322,560 permutations". Where does this number come from?
Going by his own definition, if 4x4=16 objects are to be permuted (this
is the only way to "generalize" his "theorem") then G should be
isomorphic to S16, the symmetric group on 16 letters, with
16!=20922789888000 elements. Why 322560? Huh?

Barry
for
Crank Watch International

Date Subject Author
7/5/05 crankbuster
7/5/05 LarryLard
7/5/05 crankbuster
7/6/05 LarryLard
7/7/05 crankbuster
7/12/05 Steven H. Cullinane
7/12/05 crankbuster
7/12/05 Bob Stewart
12/31/05 Steven H. Cullinane