American Mathematical Monthly Problems

The American Mathematical Monthly is an expository journal intended for a wide audience of mathematicians, from undergraduate students to research professionals. Each issue has a Problems and Solutions section where several new problems are proposed.
Below you can find the solutions that I've recently submitted (pdfs will be available after the deadline). In the past years I gathered a pretty large collection of problems&solutions (but beware of nerd sniping ):

-2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
2011 2012 2013 2014 2015 2016 2017 2018 2019 2020
2021
For anyone who is interested in sharing solutions, please feel free to contact me at


Problem 12332 - 06 - F. Holland (Ireland).

Problem 12331 - 06 - WeChat Group on Matrix Analysis (USA).

Problem 12328 - 06 - P. Koymans and J. Lagarias (USA).

Problem 12327 - 05 - M. Merca (Romania).

Problem 12326 - 05 - G. Stoica (Canada).

Problem 12324 - 05 - A. Stadler (Switzerland).

Problem 12323 - 05 - E. Vigren (Sweden) and A. Dieckmann (Germany).

Problem 12322 - 05 - A. Dzhumadil'daev (Kazakhstan).

Problem 12321 - 05 - M. Sharifi (Iran).

Problem 12320 - 04 - E. Treviño (USA).

Problem 12319 - 04 - M. Bencze (Romania).

Problem 12318 - 04 - M. Mehrabi (Sweden).

Problem 12317 - 04 - S. Stewart (Saudi Arabia).

Problem 12316 - 04 - H. A. ShahAli (Iran) and M. Shahali (USA).

Problem 12314 - 04 - G. Galperin and Y. J. Ionin (USA).

Problem 12313 - 03 - D. B. West (USA).

Problem 12311 - 03 - H. Ohtsuka (Japan).

Problem 12309 - 03 - J. DeVincentis, T. C. Occhipinti, and D. J. Velleman (USA).

Problem 12308 - 03 - C. Lupu (China).

Problem 12306 - 02 - A. Awasthi (India).

Problem 12305 - 02 - S. Sharma (India).

Problem 12304 - 02 - M. Bataille (France).

Problem 12303 - 02 - G. Apostolopoulos (Greece).

Problem 12302 - 02 - M. Omarjee (France).

Problem 12300 - 02 - H. A. ShahAli (Iran).

Problem 12299 - 01 - E. Vigren (Sweden).

Problem 12298 - 01 - G. Stoica (Canada).

Problem 12297 - 01 - N. Bhandari (Nepal).

Problem 12296 - 01 - D. A. Kalarkop, R. Rangarajan (India) and D. B. West (USA).

Problem 12294 - 01 - Tran Quang Hung (Vietnam).

Problem 12293 - 01 - H. Ohtsuka (Japan) and R. Tauraso (Italy).