"According to Physics Central, 1 + 2 + 3 + 4 + … only equals -1/12 because the mathematicians redefined the equal sign." Strange. The equal sign is already loa

"According to Physics Central, 1 + 2 + 3 + 4 + … only equals -1/12 because the mathematicians redefined the equal sign." Strange. The equal sign is already loaded. It can can be used to indicate equality, proportionality, identity and to make definitions.