Goodarz Mehr
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 Jan 3 revised Sum of two Dedekind cuts is well-defined edited tags Jan 3 accepted Sum of two Dedekind cuts is well-defined Jan 3 revised Sum of two Dedekind cuts is well-defined added 322 characters in body Jan 3 asked Sum of two Dedekind cuts is well-defined Dec 27 revised diophantine equation in positive integers added 2 characters in body Dec 27 asked diophantine equation in positive integers Dec 9 comment graph avoiding cycle of length 4 now I undrestand, thanks a lot :) Dec 8 accepted graph avoiding cycle of length 4 Dec 8 comment graph avoiding cycle of length 4 I know Jensen's function, but would you please show me how to apply it here? every time I use it on this question I get $m\le \frac{n}{4}(1+2\sqrt{n})$. Dec 8 asked graph avoiding cycle of length 4 Nov 21 accepted combinatorial geometry: covering a square Nov 21 comment Identical colored squares in plane what is geometry of squares?? and BTW for $n=2$, there is an easier way, just consider the leftmost square. squares of the other color satisfy the conditions. I really don't think this needs that much of mathematics because I picked it up from an olympiad paper..... Nov 20 comment combinatorial geometry: covering a square yes, overlapping is allowed. Nov 20 asked Identical colored squares in plane Nov 20 revised combinatorial geometry: covering a square added 2 characters in body Nov 20 asked combinatorial geometry: covering a square Oct 23 awarded Editor Sep 29 comment representing all odd naturals as the sum of four squares, two of them equal nice proof using three-squares theorem. thanks :) Sep 29 accepted representing all odd naturals as the sum of four squares, two of them equal Sep 28 awarded Supporter