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3 votes
1 answer
610 views

Problem Understanding Euclid Book 10 Proposition 1 [closed]

this is embarrassing, but I am having trouble reading through Proposition 1 of Book 10 of Euclid's elements. I'm struggling with Euclid's terminology and don't have a clear picture of what divisions ...
user304582's user avatar
27 votes
4 answers
4k views

Who introduced the terms "equivalence relation" and "equivalence class"?

Consider that the question does not concern the origin of the ideas of equivalence relation and equivalence class. It exactly concerns the origin of the terms "equivalence relation" and "equivalence ...
Amir Asghari's user avatar
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