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Math for the people, by the people.

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PlanetMath is a virtual community which aims to help make mathematical knowledge more accessible. PlanetMath's content is created collaboratively: the main feature is the mathematics encyclopedia with entries written and reviewed by members. The entries are contributed under the terms of the Creative Commons By/Share-Alike License in order to preserve the rights of authors, readers and other content creators in a sensible way. We use LaTeX, the lingua franca of the worldwide mathematical community.

Beginning February 23th 2015 we experienced 15 days of downtime when our server stopped working. We moved a backup to DigitalOcean, and we're back online. Some features aren't working yet; we're restoring them ASAP. Please report bugs in the Planetary Bugs Forum or on Github.

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  • User error: missing stream in "getFormat" via ARC2_Reader in _sparql_request() (line 92 of /home/jcorneli/beta/sites/all/modules/sparql/sparql.module).
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Latest Messages  

[p] modified Fermat theorem by pahio Jun 23
I don't see such a proof. Can you please write it in PlanetMath?

[p] Modified Fermat's theorem by akdevaraj Jun 23
Pahio, happy to say "Nick" of Mersenneforum.org has given a simple proof.

[p] Modified Fermat's theorem by akdevaraj Jun 23
Pahio, happy to say "Nick" of Mersenneforum.org has given a simple proof.

[p] Modified Fermat's theorem by akdevaraj Jun 23
Pahio, happy to say "Nick" of Mersenneforum.org has given a simple proof.

[p] Modified Fermat's theorem by akdevaraj Jun 23
Pahio, happy to say "Nick" of Mersenneforum.org has given a simple proof.

[p] Modified Fermat's theorem by akdevaraj Jun 23
Pahio, happy to say "Nick" of Mersenneforum.org has given a simple proof.

[p] Modified Fermat's theorem by akdevaraj Jun 23
Pahio, happy to say "Nick" of Mersenneforum.org has given a simple proof.

[p] Modified Fermat's theorem by akdevaraj Jun 22
Before replying to Pahio's call for proof would like to add that I forgot to add the condition: a and p should be co-prime.

[p] modidied Fermat's theorem by pahio Jun 21
Nice theorem! How do you prove it?

[p] Modified Fermat's theorem by akdevaraj Jun 21
Modified Fermat's theorem: Let a belong to the ring of Gaussian integers Then a^(p^2-1)= = 1 (mod p). Here p is a prime number with shape 4m+1 or 4m+3.

[p] conjecture pertaining to Gaussian integers by akdevaraj Apr 27
Happy to report that "Nick", on mersenneforum.org, has stated that my conjecture can be taken as proved.

[p] conjecture pertaining to Gaussian integers by akdevaraj Apr 27
Happy to report that "Nick", on mersenneforum.org, has stated that my conjecture can be taken as proved.

[p] conjecture pertaining to Gaussian integers by akdevaraj Apr 26
A couple of examples given below:Reading GPRC: gprc.txt ...Done. GP/PARI CALCULATOR Version 2.6.1 (alpha) i686 running mingw (ix86/GMP-5.0.1 kernel) 32-bit version compiled: Sep 20 2013, gcc version 4.6.3 (GCC) (readline v6.2 enabled, extended help enabled) Copyright (C) 2000-2013 The PARI Group PARI/GP is free software, covered by the GNU General Public License, and comes WITHOUT ANY WARRANTY WHATSOEVER. Type ? for help, \q to quit. Type ?12 for how to get moral (and possibly technical) support. parisize = 4000000, primelimit = 500000 (10:53) gp > ((2+I)^8-1)/3 %1 = -176 - 112*I (10:54) gp > ((2+I)^48-1)/7 %2 = -8220080432083104 - 2221404619138848*I (10:55) gp > ((2+I)^120-1)/11 %3 = 48335053046044394818188476307133621695792 - 62299385456398106436997673432684416797456*I (10:55) gp >\begin{flushright} \end{flushright}

[p] conjecture pertaining to Gaussian integers by akdevaraj Apr 24
Let the base be a Gaussian integer = a + ib. Let p be a prime number of shape 4m + 3. Then ((a + ib)^(p^2-1) - 1) == 0 (mod p). This is subject to the base, a + ib and p being co-prime,