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I noticed that you use the spelling "contraposative" consistently. I'd only known this as "contrapositive", and Wiktionary agrees: https://en.wiktionary.org/wik

by derdi 2mo ago

I noticed that you use the spelling "contraposative" consistently. I'd only known this as "contrapositive", and Wiktionary agrees: https://en.wiktionary.org/wiki/contrapositive https://en.wiktionary.org/wiki/contrapositive . But I find lots of web hits for "contraposative", so I suspect it's more than just a common typo. Did you learn this specific form from some specific source that contrasted the two?

max-amb 2mo ago
Unfortunately I think it may be just a common typo. I suppose it just looked right to me. Sorry to disappoint. Edit: And to answer your question, no I did not.