... Correction: The second and third of these are equivalent to each other under the permutation 2<-->3 plus reflection across the main diagonal, so there are...
In a message dated 2/1/2008 6:47:51 PM Central Standard Time, ... Can determinants of these sudoku treated as matrices be used to determine if they are...
... wrote: Interesting, and logical, approach - thanks. I did find that the two are equivalent. Swap bottom pair of rows with top pair of rows, then replace 2...
... Are you sure? Applying those to the second array seems to return to it although I might be confused: 1243 3421 2314 4132 --> 2314 4132 1243 3421 --> 1243 ...
... determine if ... Maybe but it would be surprising. There's an overlap with the types of transformations that preserve determinants (i.e. row and column ...
... Then again, I might be the one who is confused, as you numbers below look convincing. I will check what I did - I may have described it poorly; or made a...
Here's a problem I sort of just invented, and it was inspired by the fact that I'm participating in a superbowl grid. You've probably heard of these: it's a...
TO ANY PERSON WHO IS INTERESTED IN MATHEMATICS KIRSEHIR NATIONAL EDUCATIONAL DIRECTORY invites you to attend the Comenius in-service training course titled...
what is the number of completed sudokus possible? ... Get the freedom to save as many mails as you wish. Click here to know how. [Non-text portions of this...
... I notice in the above two arrays; the diagonals have two different numbers and the diagonals in the second have three different numbers. That is, the...
... Could it be 3(2-x).cos 3x.(sin 3x)^(1-x) Peter No solution??? ... Hey all! Here's a quick examination for you all: y = (sin 3x)^(2-x) dy/dx = ? And a Merry...
... You wrote: "It would be hard to cheat, because if the administrator picks his own permutations to improve his own squares, anybody can independently take...
... Wow, while that avoids most of the math of my problem, your solution seems excellent. I never thought of this. It also eliminates the need for any seeds...
... Just agree on a Random number generator and use the first lottery numbers for the seed. first number, second, sum of the digits etc. Or just use the square...
... I would like to add the following: You could have all the participants publish a (salted) hash of their seed (or use any sort of commitment, see link ...
Dear friends, We are organizing a comenius math course near Cappadocia in Turkey.People who is interested in Maths can see the attachements. Best Regards Ersin...
Hi, I stumbled on this working with a variation of FLT. Find integers a,b,c such that a^1/2 + b^1/2 = c^1/2 and a^2 + b =c. Prove the solution is unique. ...
There was an error in my org post. ________________________________ To: mathforfun@yahoogroups.com From: hillcino368@... Date: Thu, 7 Feb 2008 01:15:01...
Dear mathletes, It is a pleasure for me to invite you to the 3rd Mental Calculation World Cup which will be held on 29 June-1 July at the University of...
... The proposition was formulated by looking at FLTR (Fermat's Last Theorem for Rational exponents) Consider the identity x+y =x+y = z Then (x^n)^(1/n) +...
Hello, My name is Kristin Barber and I work in the Distance Learning department in the Advanced Technology Center at Shawnee State University in Southern Ohio...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the mathforfun group. File : /Puzzle.PNG ...
mathforfun@yahoogroup...
Feb 11, 2008 4:38 pm
13176
Hello all, I am new to this group and I wasn't sure how to append a file to a message, so I just posted my file in the files section, it's called Puzzle.PNG. ...
http://f1.grp.yahoofs.com/v1/UDu0RxmpoZ4fs2b3ds6U_0EgLeOQvSnKHZ4UxpKOcxtndRIMnO1PT0eQwyCG7OpYNL3W7AVERuVR2g7uWpsiJXMFLxLijlCnPS0/Puzzle.PNG s = square, t =...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
