Reputation
8,642
Next privilege 10,000 Rep.
Access moderator tools
Badges
3 16 34
Impact
~237k people reached

Apr
29
answered Fundamental set of solutions to a differential equation
Apr
25
reviewed Approve Then there exists a unique natural number $b$ less than $p$ such that $ab \equiv 1 \pmod{p}$.
Apr
25
awarded  reference-request
Apr
25
answered Does anyone know a book on sketching surfaces?
Apr
22
comment Analytic solutions
Gerald Teschl's ODE and Dynamical systems. On the author's webpage you can find legal free copy.
Apr
20
awarded  Yearling
Apr
15
comment Find the eigenvalues and eigenfunctions for $y''+\lambda y=0$ where $y'(1)=0$ and $y'(2)=0$
No, there will no $y(x-1)$. Replace all my $y$ except for the last one with, say, $v$, such that $y(x)=y(s+1)=v(s)$.
Apr
14
comment Mean time time until fixation in the Wright-Fisher model
The first formula is incorrect.
Apr
14
answered Find the eigenvalues and eigenfunctions for $y''+\lambda y=0$ where $y'(1)=0$ and $y'(2)=0$
Apr
13
comment What is the idea behind Green's function? What does it do?
@qmd YEs, it does make sense. See the edit. Try your method to obtsain the same answer. My method is directly related with my explanation, but yours is much more general.
Apr
13
revised What is the idea behind Green's function? What does it do?
added 779 characters in body
Apr
13
comment What is the idea behind Green's function? What does it do?
@qmd What method were you taught to find Green's function?
Apr
11
revised What is the idea behind Green's function? What does it do?
added 546 characters in body
Apr
11
answered What is the idea behind Green's function? What does it do?
Mar
12
reviewed Approve $\exp(2)$ does not converge $2$-adically.
Mar
9
reviewed Reject floor-function tag wiki
Feb
29
comment Picard Theorem for functions which are locally Lipschitz - Sketch of proof
Look up, e.g., in the book by Hartman, ODE.
Feb
29
reviewed Approve How do you sketch the LHS and RHS on one pair of axes and then solve
Feb
29
reviewed Reject Solve this recurrence relation via a first order partial differential equation?
Feb
29
answered The Wronskian of vector valued functions vs. the Wronskian of real valued functions.