imatfaal Posted January 3, 2015 Share Posted January 3, 2015 I think that the equation indicates (4xy3 - x4)1/3 rather than 31/2 multiplied by(4xy3 - x4)1/2 It doesn't - but if that is what is required then so be it. Where is the equation from? And you do realise this is a fool's errand? Wiles showed that Fermat was correct - this would lead to a counter-example ... is this the equation you were looking to represent Thomas? [latex] z=\frac{\sqrt[3]{4xy^3-x^4}-3x^2+6x}{6x} [/latex] Link to comment Share on other sites More sharing options...
Commander Posted January 3, 2015 Author Share Posted January 3, 2015 (edited) It doesn't - but if that is what is required then so be it. Where is the equation from? And you do realise this is a fool's errand? Wiles showed that Fermat was correct - this would lead to a counter-example ... is this the equation you were looking to represent Thomas? [latex] z=\frac{\sqrt[3]{4xy^3-x^4}-3x^2+6x}{6x} [/latex] Hi imatfaal, Yes, Thank you. That's the Equation and the last term 6x on the numerator can be dropped too. Then z will become z -1 and that is OK too as an integer. I am unable to draw it out correctly Regards Edited January 3, 2015 by Commander Link to comment Share on other sites More sharing options...
imatfaal Posted January 3, 2015 Share Posted January 3, 2015 Assuming x,y, z can be any integer and keep the LHS as "just any integer" [latex]\mathbb{Z}[/latex] stands for any integer [latex] z=\frac{\sqrt[3]{4xy^3-x^4}-3x^2+6x}{6x} [/latex] [latex] z - \frac{6x}{6x}=\frac{\sqrt[3]{4xy^3-x^4}-3x^2}{6x} [/latex] [latex] \mathbb{Z} =\frac{\sqrt[3]{4xy^3-x^4}-3x^2}{6x} [/latex] remembering that 6x must be an integer if x is an integer [latex] \mathbb{Z} =\sqrt[3]{4xy^3-x^4}-3x^2 [/latex] and that -3x^2 must be as well [latex] \mathbb{Z} =\sqrt[3]{4xy^3-x^4}[/latex] BUT - and it is a BIG BUT ; Andrew Wiles has already proven that this cannot be the case!!!! 1 Link to comment Share on other sites More sharing options...
Commander Posted January 3, 2015 Author Share Posted January 3, 2015 (edited) Assuming x,y, z can be any integer and keep the LHS as "just any integer" [latex]\mathbb{Z}[/latex] stands for any integer [latex] z=\frac{\sqrt[3]{4xy^3-x^4}-3x^2+6x}{6x} [/latex] [latex] z - \frac{6x}{6x}=\frac{\sqrt[3]{4xy^3-x^4}-3x^2}{6x} [/latex] [latex] \mathbb{Z} =\frac{\sqrt[3]{4xy^3-x^4}-3x^2}{6x} [/latex] remembering that 6x must be an integer if x is an integer [latex] \mathbb{Z} =\sqrt[3]{4xy^3-x^4}-3x^2 [/latex] and that -3x^2 must be as well [latex] \mathbb{Z} =\sqrt[3]{4xy^3-x^4}[/latex] BUT - and it is a BIG BUT ; Andrew Wiles has already proven that this cannot be the case!!!! Hi imatfaal and Michel123456, I am very sorry. After I checked again with the help of the tool it appears my interpretation was wrong. So it is only z = [ 31/2 (3xy3 - x4) 1/2 - 3x2 ] / 6x and therefore we need to contend with Square root of 3 which is an irrational number ! Because this is the Solution for z in the Equation y3 + z3 = (z+x)3 or y3 = (z+x)3 - z3 as a Sum or difference between Cubic Numbers and therefore the solution to y3 + z3 = n3 has only an irrational Value and hence proves the Fermat's Conjecture for the Power of 3. Edited January 3, 2015 by Commander Link to comment Share on other sites More sharing options...
michel123456 Posted January 3, 2015 Share Posted January 3, 2015 My "feeling" with Fermat's last theorem is that you need an equal number of factors for having integers in the solution. For example a3 + b3 = c3 will not give integer but a3 + b3 + c3= d3 will. And a4 + b4 + c4+ d4= e4 will have an integer solution. But that is just a feeling. Link to comment Share on other sites More sharing options...
Commander Posted January 3, 2015 Author Share Posted January 3, 2015 (edited) My "feeling" with Fermat's last theorem is that you need an equal number of factors for having integers in the solution. For example a3 + b3 = c3 will not give integer but a3 + b3 + c3= d3 will. And a4 + b4 + c4+ d4= e4 will have an integer solution. But that is just a feeling. Yes, 33 + 43 + 53 = 63 Many Solutions for a3 + b3 = c2 might be found I think. like 13 + 23 = 32 , It is also very interesting to note that [13+23+33 ... + n3] = [1+2+3 .....+n]2 = [n (n+1) /2] 2 Edited January 3, 2015 by Commander Link to comment Share on other sites More sharing options...
Commander Posted January 4, 2015 Author Share Posted January 4, 2015 (edited) I need to put some more info already known to me. Particularly that z should be an irrational number whatever be the substitutions elsewhere. Also efforts will still be on for more Solutions Pl give me some time. PS : Overnight had a severe Tooth Ache which God has lessened it and now I have a high shivering too. Com will be off for a while i came in to quickly announce [it is already quite late] that it is only due to the Support and Discussion with imatfaal and michel123456 who pointed out the errors which I was making so that I could Correct the equation ! Thank you Friends ! >>>>>>>>>>> Another thing I can add here is : To produce a Cubic Number Cn the Sum Wa [1 ,,, n) can also be used with Wa = 3a2 - 3a +1 instead 0f (a = 0,, n-1) and both will be the same !! Edited January 4, 2015 by Commander Link to comment Share on other sites More sharing options...
Sensei Posted January 25, 2015 Share Posted January 25, 2015 (edited) Any Positive Natural Number N can be written as a positive sum of the Powers of 2 ! N = 2a + 2b ..... with as many terms as require where a , b , c etc are all Natural positive Numbers from [ 0,1,2,3 .....] These powers a, b, etc in the sequence will be PRESENT or ABSENT in the Equation only once. No repetition is required. This is nothing but a Binary Number representing the powers of 2 which add up to be equal to N. Just a small note: We can have binary number that's not integer, but finite fractional. f.e. if we write: 0.1011 it will be: 2-1+2-3+2-4=0.5+0.125+0.0625=0.6875 Binary %1011 is 11 in base 10. 11/16=0.6875 Edited January 25, 2015 by Sensei Link to comment Share on other sites More sharing options...
Commander Posted January 27, 2015 Author Share Posted January 27, 2015 Just a small note: We can have binary number that's not integer, but finite fractional. f.e. if we write: 0.1011 it will be: 2-1+2-3+2-4=0.5+0.125+0.0625=0.6875 Binary %1011 is 11 in base 10. 11/16=0.6875 Yes, Sensei, but here I was talking only about Integers Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now