Mathematical Artist, Teacher, Researcher. Developing math rooms, courses, and resourses for schools. Equipment, games and manipulatives for kindergarten, school, high school and home. Artwork mathematics created with the human body. Curiosities, pictures, animations, ideas. Maggie and the Abacaba Genies. Amazing pattern, amazing connections.

Difference Between Update and Upgrade in Ubuntu. Updates the list of available packages. And their versions, but it does not install. Installs newer versions of the packages based on the updated list of available packages. After updating the lists, the package manager would know about available updates for the software already installed in a computer. This is why running update prior to upgrade is recommended.