4,862 reputation
918
bio website motls.blogspot.com
location Czech Republic
age 41
visits member for 3 years, 9 months
seen Dec 28 '14 at 7:36

Hi, I am a string theorist and a publicist.


Jun
26
comment Plane intersecting line segment
Dear @PUK, if a line belongs to a plane, then it surely is parallel with it. At any rate, when it is so, the intersection - as in set theory - of the plane and the line is the whole line (the very same one). I don't understand in what sense it would make sense to pick two particular points on the line as "better intersections" than all the other points. Also, I am confused by your separate discussion of negative and positive values of $dist.dist$. A fun about maths and algebra is that one may calculate with negative numbers just like with the positive ones w/o splitting derivations.
Jun
25
revised Plane intersecting line segment
added 66 characters in body
Jun
25
revised Plane intersecting line segment
added 32 characters in body
Jun
25
answered Plane intersecting line segment
Jun
18
answered How to partial differential of a trace of matrix form?
Jun
16
answered “Closest pair of points” algorithm
Jun
16
answered Interesting integral related to the Omega Constant/Lambert W Function
Jun
16
awarded  Enthusiast
Jun
14
awarded  Nice Answer
Jun
14
revised Smooth transition between two lines (2d)
added 188 characters in body
Jun
14
comment Smooth transition between two lines (2d)
Thanks, Ross, be sure that I like circles, too. ;-)
Jun
14
comment Algebraic proof of a trig matrix identity?
Thanks, @Jyrki, complexophobia is a legitimate concern! :-) If you have time and energy, it would be good if you could write a full-fledged answer. @Peter, thanks to you, too.
Jun
14
answered Smooth transition between two lines (2d)
Jun
14
reviewed Approve Why is $\infty^0$ indeterminate?
Jun
14
answered Why is $\infty^0$ indeterminate?
Jun
14
comment Smooth transition between two lines (2d)
Dear Kiranu, I edited some TeX a bit. It's a piecewise linear function. It's continuous at $x=30$ (not $x=2$) because $y=2$ but not "smooth". There are infinitely many ways how to change it to a similar smooth function. I am afraid it's not clear which of them you really want and why.
Jun
14
revised Smooth transition between two lines (2d)
added 81 characters in body
Jun
14
revised How to get the cardinal direction from one location to another?
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Jun
14
revised How to get the cardinal direction from one location to another?
added 46 characters in body
Jun
14
revised How to get the cardinal direction from one location to another?
added 23 characters in body; added 124 characters in body; added 155 characters in body