Reputation
5,654
Top tag
Next privilege 10,000 Rep.
Access moderator tools
Badges
3 10 28
Newest
 Taxonomist
Impact
~86k people reached

Apr
23
accepted Lie derivative of two differnt size related tensors
Apr
23
comment Lie derivative of two differnt size related tensors
Thank you. It does work.
Apr
23
comment Lie derivative of two differnt size related tensors
So you mean I should start with $$\bar {\frak{L}}_{h\partial _t}(\bar R(X,\partial_t,\partial_t,Y))= \bar {\frak{L}}_{h\partial _t}(\bar g(\frac{-\ddot f}{f}X,Y))$$
Apr
23
comment Lie derivative of two differnt size related tensors
Now, I understand your point. I am going to check it
Apr
23
comment Lie derivative of two differnt size related tensors
I am OK with this formula and got the LHS using it. I want to understand why the RHS is different. You have repeated my question. We take the Lie derivative of both sides. Why they are different?
Apr
23
revised Lie derivative of two differnt size related tensors
added 17 characters in body
Apr
23
asked Lie derivative of two differnt size related tensors
Mar
28
answered How to solve this exact differential equation $(y-x^2)dx + xdy = 0$?
Feb
8
awarded  Taxonomist
Feb
6
comment Write $\gamma(t) = (t,t^2,t^3)$ as a graph and a level set
@diffGeoLost A level set of a function $f$ is a set points where $f=c$ for some constant $c$
Jan
2
comment Does $\sum_{n=1}^\infty \frac{2\cdot 4\cdot 6\cdot …\cdot (2n)}{n^n}$ converge?
I think it is easy to use ratio test
Dec
31
reviewed Leave Open Differential of determinant of metric tensor
Dec
31
comment Let $f(x)$ be a differentiable function on real number line such that $\lim_{x\to \infty} f(x) = 1$ and $\lim_{x\to \infty} f'(x) = a$
The asymptote line to $f(x)$ is $y=1$ and the slope of this line is $0$.
Dec
31
comment confusion about permutation
your mistake is that 72 includes 8, so you subtract 8 twice
Dec
31
revised confusion about permutation
added 5 characters in body
Dec
31
comment confusion about permutation
Could you please write what you did
Dec
21
comment Generalization of integrating factor?
@yhhuang Excellent
Dec
21
comment Generalization of integrating factor?
Did you try to evaluate and use it for $n=2$?
Dec
20
awarded  Yearling
Dec
18
comment Compute using the define of Lie derivative.
@lanse7pty Could you please add the book information(name, author, page)