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• Equations system with a black rectangle in LaTeX https://gus-massa.blogspot.com/2020/06/equations-system-with-black-rectangle.html 44 comments 29/6/2020
• More on Prime Parallelograms https://gus-massa.blogspot.com/2019/09/more-on-prime-parallelograms.html 3 comments 23/9/2019
• If 1+x is 1, how much is 1-x? https://gus-massa.blogspot.com/2015/04/if-1x-is-1-how-much-is-1-x.html 51 comments 21/4/2015
• Removing the strange #t and #f of the if's in Racket bytecode http://gus-massa.blogspot.com/2014/04/removing-strange-t-and-f-of-ifs-in.html 3 comments 1/5/2014