1,748 reputation
618
bio website
location
age
visits member for 3 years
seen Dec 13 at 17:13

Dec
15
awarded  Yearling
Dec
9
awarded  Caucus
Nov
26
awarded  Civic Duty
Nov
15
comment is this polynomial irreducible in $F_2[X]$
I agree. "Yes" is a solution to the above question.
Nov
15
comment is this polynomial irreducible in $F_2[X]$
wolframalpha.com/input/…
Nov
15
comment is this polynomial irreducible in $F_2[X]$
$$\left(x^8+x^5+x^4+x^3+1\right) \left(x^8+x^7+x^6+x^4+x^2+x+1\right)$$
Oct
23
comment Find $x$ for which the rank is as minimal/maximal as possible
Hint: The first and second rows are indepedent. So for all $x$, the rank is $\ge2$. There are only three rows, so the rank is $\le3$. There're not so many options...
Oct
19
answered How to show that the curve $ (x,y,z) = \langle \cos t, \sin t, c\sin t\rangle $ is an ellipse?
Oct
12
comment $\phi : S^n \to S^n$ with no fixed point
What you wrote is the generalization of a torus.
Oct
9
reviewed No Action Needed Is this a valid proof of surjectivity?
Oct
9
comment Is there a finite set comprising the solutions to indefinite integrals of common functions?
The set of all polynomials?
Oct
9
comment Given one solution of ODE, how to find second solution?
The forcing is solved by the -1 term. This is the general technique: you find one particular solution $y_p$ (in our case, the constant function $y_p=-1$), and $n$ homogeneous solutions $y_1\dots y_n$ ($n$ is the degree of the ODE), and the most general solution is given by $$y=y_p+\sum A_i y_i$$
Oct
8
answered Given one solution of ODE, how to find second solution?
Oct
8
comment Show that a unitary operator is of the form exp(iA)
Try using $A=-i \log (U)$
Oct
7
comment Nearest point from the origin
@alethiologist norm en.wikipedia.org/wiki/Norm_(mathematics)#Notation
Sep
21
comment Every Two Element in A Coset
@JonasGomes My thoughts exactly. This is why I didn't understand the question.
Sep
21
comment Every Two Element in A Coset
The order of the quantifiers is unclear to me. Are you asking whether for every $a,b$ I can find a $c$ and an $H$ (possibly different for different $a,b$?)
Jul
17
awarded  Popular Question
Jul
15
answered Geometric series of matrices
Jul
2
awarded  Curious