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mitochan's latest activity
mitochan
replied to the thread
I
A problem with the solution to the ladder paradox
.
One more as attached.
Oct 17, 2021
mitochan
replied to the thread
I
A problem with the solution to the ladder paradox
.
May I interpret you as one of the sketches attached ? The string will not be broken when the doors move in a synchronized way, i.e. the...
Oct 17, 2021
mitochan
replied to the thread
I
The Universe filled with a "homogeneous perfect fluid"
.
You may be able to regard matter and radiation fill the universe though they are not homogeneous. For an example the space is filled...
Oct 9, 2021
mitochan
replied to the thread
Integral of 1 / (x^2 + 2) dx ?
.
Then \int \frac{dx}{x^2+2}= \frac{1}{\sqrt{2}}\int\frac{d\frac{x}{\sqrt{2}}}{(\frac{x}{\sqrt{2}})^2+1}=...
Oct 9, 2021
mitochan
replied to the thread
Integral of 1 / (x^2 + 2) dx ?
.
Please take a look at attached calculation.
Oct 8, 2021
mitochan
replied to the thread
I
Black hole inside of a black hole... can it be done?
.
The primitive deduction, A BH as well as an ordinary body has a timelike line in our spacetime. The center of BH has its timelike line...
Oct 4, 2021
mitochan
reacted to
PeterDonis's post
in the thread
I
Black hole inside of a black hole... can it be done?
with
Like
.
Your sketch is incorrect. The topology of the singularity is a single spacelike line, not one line that branches into two.
Oct 3, 2021
mitochan
replied to the thread
I
Black hole inside of a black hole... can it be done?
.
I draw a sketch for better understanding at attached.
Oct 3, 2021
mitochan
replied to the thread
Determining if series converges or diverges
.
An orthodox way is to investigate |\frac{a_{n+1}}{a_n}| is greater or less than 1.
Oct 2, 2021
mitochan
replied to the thread
Integral of 1 / (x^2 + 2) dx ?
.
If you can integrate \int \frac{1}{x^2+1} dx you are not far from the answer.
Oct 2, 2021
mitochan
replied to the thread
I
Black hole inside of a black hole... can it be done?
.
When two blackholes collide to one, in some time in a merging process are there two singular points within a merged blackhole? PS In...
Oct 1, 2021
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