The American Mathematical Monthly

The American Mathematical Monthly is a peer-reviewed scientific journal of mathematics. It was established by Benjamin Finkel in 1894 and is published by Taylor & Francis on behalf of the Mathematical Association of America. It is an expository journal intended for a wide audience of mathematicians, from undergraduate students to research professionals. Articles are chosen on the basis of their broad interest and reviewed and edited for quality of exposition as well as content. The editor-in-chief is Vadim Ponomarenko (San Diego State University).

The journal gives the Lester R. Ford Award annually to "authors of articles of expository excellence" published in the journal.

The following persons are or have been editor-in-chief:

Ever since its founding in 1894 the American Mathematical Monthly has invited readers to propose and solve challenging mathematical problems for publication in its Problems and Solutions section. As of 2025 more than 12,000 problem proposals have appeared.

 ^*University of Maine Problems Group
^**University of Waterloo Problems Group
 ^†San Francisco Bay Area Problems Group

The table below lists solutions based on the following premise: something was published that justifies excluding the problem proposal from a list of unsolved problems.

For example, Calculus 360 ("solution" 1918 no. 4) is a question whose answer has no truth value and is thus "unsolvable" in a certain sense, so a mere reply to the question qualifies as a solution in the table.

In 1918 no. 5 a "note" on Calculus 435 also counts as a solution because the author refers to a paper then concludes: "To solve [problem 435] we need only put alpha = 0 in the first of the integrals mentioned." (However, since 435 has a solution in the previous issue, this note was omitted from the table.)