> As any mathematician knows, you literally can have a set of mathematical equat... | Hacker News

Hacker News new | past | comments | ask | show | jobs | submit

login

kevindqc on July 12, 2017 | parent | context | favorite | on: The Beauty of Programming (2001) [pdf]

> As any mathematician knows, you literally can have a set of mathematical equations in which three plus three equals two.

What does that mean?

greenyoda on July 15, 2017 [–]

In the cyclic-4 group (integer arithmetic modulo 4), 3 + 3 = 2.

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact