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seen Jul 22 at 12:19

Jul
2
awarded  Curious
Jun
27
awarded  Popular Question
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
Apr
15
asked Existence of a map $\phi:\mathbb{Z}_{N^2}^* \mapsto \mathbb{F} $
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 ?
Feb
4
awarded  Notable Question
Dec
27
awarded  Popular Question
Dec
12
asked Does this modular arithmetic equation hold?
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
asked What is so special about frobenious endomorphisms in elliptic curves?
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?