198 reputation
110
bio website
location
age
visits member for 3 years, 3 months
seen Aug 13 at 10:12

Apr
15
comment Existence of a map $\phi:\mathbb{Z}_{N^2}^* \mapsto \mathbb{F} $
Based on chinese remainder theorem there is an isomorphism: $\phi:\mathbb{Z}_{N^2}^* \mapsto \mathbb{Z}_{p^2}^* \times \mathbb{Z}_{q^2}^*$ And if $p$ and $q$ are primes then $\mathbb{Z}_{p^2}^*$ and $\mathbb{Z}_{q^2}^*$ constitute a field. I think this is one possible solution
Mar
7
comment “Great Circle” distance
the norm is not computed correctly . It is not r but
Mar
1
comment Great arc distance between two points on a unit sphere
Even if without the wikipedia definition i cant see how the formula of inner product between $v_1$ and $v_2$ gives the result you wrote
Feb
28
comment Great arc distance between two points on a unit sphere
What you get is not the formula from here: en.wikipedia.org/wiki/Great-circle_distance#Formulas . I can't understand how the differences in cos are derived since you compute the inner product
Feb
28
comment Great arc distance between two points on a unit sphere
how exactly you got the dot product ?
Dec
12
comment Can i approximate the inner product of two vectors by the sum of their coefficients?
@nomen what is an NDA?
Dec
5
comment is it possible for two fields with the same characteristic to not be isomorphic?
Sorry i forgot to define it. Slide 37
Dec
5
comment is it possible for two fields with the same characteristic to not be isomorphic?
Is this slide wrong written then crypto.biu.ac.il/winterschool2013/NigelSmart-BIU2013.pdf?
Dec
3
comment How do you determine if an elliptic curve over a finite field is cyclic?
I am totally lost. What is this symbol $\ominus$?
Dec
3
comment What is a primitive point on an elliptic curve?
How can you find the primitive point of a curve?
Dec
3
comment Prove that there are $p+1$ points on the elliptic curve $y^2 = x^3 + 1$ over $\mathbb{F}_p$, where $p > 3$ is a prime such that $p \equiv 2 \pmod 3$.
How this is true :$$\#\{(x,y) \in \mathbb{F}_p^2 : y^2 = x^3 + 1\} + \#\{\infty\} = \#\{(x,y) \in \mathbb{F}_p^2 : y^2 = x\} + 1.$$
Dec
3
comment Doubling a point on an elliptic curve
why s is so when we double a point, i can't figure it out
Nov
29
comment Estimation of inner product
Can you elaborate more on these different cases?
Nov
22
comment Can i find such a polynomial?
Also by chance we have prime numbers.How can it be generalized with composite numbers? Anyway thanx Mitso ;)
Nov
22
comment Can i find such a polynomial?
Can you elaborate a bit more. It's unclear what do you mean by the product of all past b's? Also i can't see where you are using the fact that these pairs just happen to be relative prime? You mean that the function is just the gcd?
Nov
22
comment Can i find such a polynomial?
@vadim123 yes this is true
Nov
14
comment What happens if one multiplies two elements belonging to two different groups?
@DanShved the first option: the cyclic group of order $p$
Nov
14
comment What happens if one multiplies two elements belonging to two different groups?
@aPaulT Is there a common group in my case?
Nov
6
comment Can i approximate the inner product of two vectors by the sum of their coefficients?
Can it can be approximated with other operation than the sum?
Nov
6
comment Can i approximate the inner product of two vectors by the sum of their coefficients?
The question is simple. How i can best approximate the inner product other than the classical way with operation that do not involve so many multiplications