Math Discussion
Moderator: elim
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Number Theory
Moderator: elim - 5 Topics
- 6 Posts
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Last post by elim
Sat Feb 04, 2012 10:18 am
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Number Theory
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Combinatorics
Moderator: elim - 1 Topics
- 1 Posts
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Last post by elim
Fri Oct 07, 2011 3:54 pm
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Combinatorics
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Inequalities
Moderator: elim - 4 Topics
- 10 Posts
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Last post by seamsql
Tue Jan 03, 2012 1:23 am
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Inequalities
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- An Area property of Triangles
by elim » Wed Aug 31, 2011 12:42 pm
- 3 Replies
- 4553 Views
- Last post by Bataouche
Mon Sep 10, 2012 1:28 pm
- An Area property of Triangles
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- A kind of polynomial: $\int_0^1 P^2 = (n+1)(\int_0^1 P)^2$
by elim » Mon Mar 05, 2012 8:49 am - 0 Replies
- 4100 Views
- Last post by elim
Mon Mar 05, 2012 8:49 am
- A kind of polynomial: $\int_0^1 P^2 = (n+1)(\int_0^1 P)^2$
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- Show a set of numbers are irrational
by elim » Sat Feb 04, 2012 10:18 am - 0 Replies
- 3937 Views
- Last post by elim
Sat Feb 04, 2012 10:18 am
- Show a set of numbers are irrational
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- Real polynomial
by elim » Sun Sep 25, 2011 9:40 pm - 2 Replies
- 4404 Views
- Last post by seamsql
Tue Jan 03, 2012 1:23 am
- Real polynomial
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- Close form of $1+\sum_{j=1}^n j! j$
by elim » Tue Nov 15, 2011 8:21 pm - 1 Replies
- 4178 Views
- Last post by elim
Tue Nov 15, 2011 8:25 pm
- Close form of $1+\sum_{j=1}^n j! j$
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- Pell's equation $m^2 = pn^2+1$ ($p$ is prime)
by elim » Tue Nov 15, 2011 10:50 am - 0 Replies
- 2463 Views
- Last post by elim
Tue Nov 15, 2011 10:50 am
- Pell's equation $m^2 = pn^2+1$ ($p$ is prime)
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- If n ≥ 4, then k ≥ 2n - (IMO SL 1987-P2)
by elim » Fri Oct 07, 2011 3:54 pm - 0 Replies
- 4321 Views
- Last post by elim
Fri Oct 07, 2011 3:54 pm
- If n ≥ 4, then k ≥ 2n - (IMO SL 1987-P2)
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- Bosnia 2009 Problem 6
by elim » Wed Sep 28, 2011 12:53 pm - 0 Replies
- 2490 Views
- Last post by elim
Wed Sep 28, 2011 12:53 pm
- Bosnia 2009 Problem 6
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- A property of greatest common divider
by elim » Tue Sep 27, 2011 5:40 pm - 0 Replies
- 2214 Views
- Last post by elim
Tue Sep 27, 2011 5:40 pm
- A property of greatest common divider
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- A sequence with inequality
by elim » Tue Sep 13, 2011 6:30 am - 1 Replies
- 2289 Views
- Last post by elim
Tue Sep 13, 2011 6:32 am
- A sequence with inequality
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- A Collection of special trigonometric identities
by elim » Mon Sep 12, 2011 10:15 am - 1 Replies
- 2555 Views
- Last post by elim
Mon Sep 12, 2011 10:21 am
- A Collection of special trigonometric identities
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- MaxMin Difference Question Over $S_n$
by elim » Thu Aug 25, 2011 11:15 am - 1 Replies
- 2079 Views
- Last post by elim
Fri Aug 26, 2011 11:42 am
- MaxMin Difference Question Over $S_n$
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- Not rational
by elim » Tue Aug 16, 2011 8:53 am - 1 Replies
- 1886 Views
- Last post by elim
Tue Aug 16, 2011 8:59 am
- Not rational
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- Bound of a sum of squares
by elim » Sun Aug 14, 2011 8:17 pm - 1 Replies
- 2317 Views
- Last post by elim
Sun Aug 14, 2011 8:28 pm
- Bound of a sum of squares
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- Series comparison
by elim » Thu Aug 11, 2011 8:51 am - 1 Replies
- 2119 Views
- Last post by elim
Thu Aug 11, 2011 10:48 am
- Series comparison
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- A property of Pythagorean triples
by karka » Tue Aug 02, 2011 10:37 am - 3 Replies
- 2676 Views
- Last post by Keesiaday
Fri Aug 05, 2011 4:05 pm
- A property of Pythagorean triples
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- A property of Harmonic sum
by elim » Fri Aug 05, 2011 7:00 am - 1 Replies
- 2422 Views
- Last post by elim
Fri Aug 05, 2011 7:01 am
- A property of Harmonic sum
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- Is {(cos kθ, sin kθ) | k = 1,2,...} dense in unit circle?
by karka » Tue Aug 02, 2011 10:34 am - 0 Replies
- 2366 Views
- Last post by karka
Tue Aug 02, 2011 10:34 am
- Is {(cos kθ, sin kθ) | k = 1,2,...} dense in unit circle?
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- An triangular inequality [1]
by elim » Fri Jul 29, 2011 8:05 am - 1 Replies
- 2104 Views
- Last post by elim
Fri Jul 29, 2011 8:31 am
- An triangular inequality [1]
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- You have great content!
by SEOSoftware » Fri Jun 17, 2011 8:06 am - 0 Replies
- 2927 Views
- Last post by SEOSoftware
Fri Jun 17, 2011 8:06 am
- You have great content!
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- Prove two properties for functions
by elim » Wed Jun 15, 2011 11:41 am - 0 Replies
- 2287 Views
- Last post by elim
Wed Jun 15, 2011 11:41 am
- Prove two properties for functions
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- When $f\cdot {f}'' \le {f}' ^2$
by elim » Tue Apr 12, 2011 10:07 pm - 1 Replies
- 2112 Views
- Last post by elim
Tue Apr 12, 2011 10:22 pm
- When $f\cdot {f}'' \le {f}' ^2$
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- Limit Problems
by elim » Fri Feb 11, 2011 2:19 pm - 2 Replies
- 2170 Views
- Last post by elim
Mon Feb 21, 2011 12:40 pm
- Limit Problems
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- A problem about decimal number expression
by elim » Tue Feb 15, 2011 10:01 pm - 0 Replies
- 2583 Views
- Last post by elim
Tue Feb 15, 2011 10:01 pm
- A problem about decimal number expression
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- Cubic Equations
by elim » Tue Feb 15, 2011 9:17 pm - 1 Replies
- 2342 Views
- Last post by elim
Tue Feb 15, 2011 9:23 pm
- Cubic Equations
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