Math Search 

Google Scholar Profile          Arxiv       ORCID ID       Mathscinet          zbMath     Mathematics Genealogy Project

Math potpourri 

Terence Tao's blog             The polymath blog           Math games         Math is fun         Keith Conrad expository writing         Ten Lessons I Wish I Had Been Taught  

Workshop: perspectivas para jovens matemáticos    Olimpíadas de Matemática de Rio Preto (OMRP)