## 957 Reputation

14 years, 307 days
University of Kent
Dr

## I think I got it now! the...

I think I got it now!

the "four roots" are

a, -a mod n,

b ,-b mod n

as you computed above.

I misunderstood what the notes meant.

I thought it's saying there are two root, then you just 'add'  plus and minus to them to get 4 roots....

I hope this time I am right LOL

Thanks.

casper

## a bit clearer...

It's a bit clearer now.

so there is a typo in the notes for x,

now I will try to understand the theorem.

we find a and b using chrem

the 'four roots', is refering to

a, -a mod n,

b ,-b mod n

or

plus/minus a, b?

Thanks.

casper

## a bit clearer...

It's a bit clearer now.

so there is a typo in the notes for x,

now I will try to understand the theorem.

we find a and b using chrem

the 'four roots', is refering to

a, -a mod n,

b ,-b mod n

or

plus/minus a, b?

Thanks.

casper

## hmmmmmmm...

Power(y,(p+1)/4) mod p

Power(y,(q+1)/4) mod q

number?

May I ask if you are familiar with that topic? Virtual coin tossing ( in number theory )

Could you give an example in how to work out that

a= +/- number and b = +/- number?

Thanks.

casper

## hmmmmmmm...

Power(y,(p+1)/4) mod p

Power(y,(q+1)/4) mod q

number?

May I ask if you are familiar with that topic? Virtual coin tossing ( in number theory )

Could you give an example in how to work out that

a= +/- number and b = +/- number?

Thanks.

casper

## StringTools:-TrimRight...

Wonderful！

I knew that there would be a simply command to use.

That's eacatly what I want!

Thanks.

casper

## StringTools:-TrimRight...

Wonderful！

I knew that there would be a simply command to use.

That's eacatly what I want!

Thanks.

casper

## 80 mails...

I got 80 today!

I thinnk they are doing updating or something.

casper

## name...

I wouldnt actually use 'name' and thanks for the remind. i got to say i was a bit surprised when i was tesing the 'name' thing in the procedure. it didnt come up with a warning.

Thank you.

casper

## name...

I wouldnt actually use 'name' and thanks for the remind. i got to say i was a bit surprised when i was tesing the 'name' thing in the procedure. it didnt come up with a warning.

Thank you.

casper

## thanks...

Hi there,

Thanks or letting me know.

Casper

## thanks...

Hi there,

Thanks or letting me know.

Casper

## Amazing showstat...

that's an amazing command.

well, I thought I am nearly finished the draft code, then I think I am pretty much messed it up...

I couldnt use n>20. and the Matrices have different 'Order'.

I have got to sleep now.

Hope I cant find some freshing codes next morning.

Thank you all for the help.

casper

BTW: just now i CANT connect to mapleprimes. It happens A LOT recently. Is there a Database maintance or update kind od thing going on ? very inconnvient.

## Amazing showstat...

that's an amazing command.

well, I thought I am nearly finished the draft code, then I think I am pretty much messed it up...

I couldnt use n>20. and the Matrices have different 'Order'.

I have got to sleep now.

Hope I cant find some freshing codes next morning.

Thank you all for the help.

casper

BTW: just now i CANT connect to mapleprimes. It happens A LOT recently. Is there a Database maintance or update kind od thing going on ? very inconnvient.

## i wll keep that in mind...

thanks, i will keep that in mind.

could you explain briefly why I shouldnt?

and as I was browing the help page in Maple, I found another way to create the Matrix. what;s the difference between, is one better (more efficient? less memory?) than another? (both in LinearAlgebra:-Modular)

Create(127,4,4,'random',integer);

Random(127,4,4,integer);

Thank you.

casper

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