721 reputation
620
bio website
location Tehran
age
visits member for 3 years, 2 months
seen Feb 11 at 6:23

Iran Mathematical Olympiad Silver Medalist 2010

Iran Mathematical Olympiad Gold Medalist 2011

International Mathematical Olympiad Bronze Medalist 2012

Studing Mechanical Engineering at Sharif University of Technology


Jan
7
comment Two functions on two areas having the same integrals
Thanks, but can you find some non-constant (and probably continuous) solutions?
Sep
28
comment Number of different necklaces using $m$ red and $n$ white pebbles
Yes, you're right. But things get different when they are not coprime.
Sep
16
comment 5 moving points in plane, one goes to infinity
Nice construction, but you didn't notice the condition that No three of the lines should intersect in one point. Without this condition, making an example for $5$ is also easy, just consider $5$ points on sides and one diagonal of a square.
Sep
16
comment 5 moving points in plane, one goes to infinity
@Feanor: would you please show us your construction? Thanks a lot.
Sep
12
comment 5 moving points in plane, one goes to infinity
@rattle: no, it's not allowed.
Sep
12
comment 5 moving points in plane, one goes to infinity
@alex.jordan: I meant that only at the initial position, non of the points is an intersection point of two lines. It's obvious when they start moving, they may meet each other.
Sep
11
comment 5 moving points in plane, one goes to infinity
To your first question, yes. Each point has it's own track. Also, each point move at its own distinct constant speed.
Aug
12
comment Minimum number of circles in a rectangle with no line in rectangle not intersecting any of them
Thanks, edited. Also it suffices to cover two diagonals to have each line intersecting at least one of them, but I'm intersected in the minimum number of such circles.
May
15
comment Identical colored squares in plane
Thanks!In fact, first of all I found the problem in that article!
May
14
comment How many ways to paint a rectangle
You may also see this one: math.stackexchange.com/questions/112565/… , which is a harder problem!
Apr
27
comment $6$ points in plane with specific distances
Thanks a lot. And would you please place a picture of the figure you say in your post?
Apr
23
comment $6$ points in plane with specific distances
Would you please explain more? I couldn't Undrestand what you said. Thanks
Apr
17
comment $6$ points in plane with specific distances
But then we get that $BEDC$ is a cyclic quadrilateral!
Apr
13
comment $6$ points in plane with specific distances
I've written how to construct that example.
Feb
27
comment A question of Logic in Olympiad
Let me explain what was the problem: I translated this question from persian language into English, and, actually both words ''wrong'' and ''false'' go to the same word in persian, namely ''غلط''. when I was translating them, I translated all of the words ''غلط'' to ''false'', except that one, which I translated it to ''wrong''. now when I was reading the problem, I decided to change that one to ''false'' too.
Feb
27
comment A question of Logic in Olympiad
I'v edited my post. thanks.
Feb
27
comment A question of Logic in Olympiad
@magma: I doubt if there will be any official solution, since it appeared in a multiple choice exam, but if there was one, I'll inform you.
Feb
27
comment minimum number of vertices for a specific graph
thanks a lot. really really beautiful!!!!
Feb
27
comment minimum number of vertices for a specific graph
thats really a great example!!! but how to prove there isn't such a graph having smaller number of vertices?
Feb
26
comment minimum number of vertices for a specific graph
what's the advantage of doing that?