Brendan W. Sullivan is an Assistant Professor of Mathematics at Emmanuel College (Boston, MA). He earned a B.A. in Mathematics and Physics from Hamilton College (Clinton, NY), and an M.S. and D.A. (Doctor of Arts) in Mathematical Sciences from Carnegie Mellon University (Pittsburgh, PA). Brendan has a passion for teaching, and he seeks to help students use mathematics to better understand their world. He has taught standard college courses from introductory algebra to calculus to real analysis, as well as other topics like combinatorics and a survey of math for liberal arts students. Furthermore, his doctoral thesis is a textbook and other course materials introducing students to the writing and reading of mathematical proofs. Here, you can find his book of mathematical crossword puzzles (and another volume coming soon). They're mathematical in the sense that they contain lots of words and names from the mathematics community, not because the grids are filled with numbers or anything like that! That is, instead of the tricky wordplay you'll find in the New York Times puzzles, Brendan's crosswords have theme answers and lots of other fill that are words and names from the math world that you might otherwise never see in a puzzle. If you'd like to see your math knowledge and trivia prove useful all throughout a puzzle, and not just every once in a while, then you'll love these crosswords.