Traditional Square of Opposition (Categorical Logic) 

This is a great video. Thank you for your content. One way to memorize the subaltern relation is to remember, "truth sinks, falsity floats." That means from a TRUE statement in the superaltern, one can infer the truth of the subaltern (since truth "sinks"). Likewise, from a FALSE statement in the subaltern, one can infer the falsity of the superaltern (since falsity "floats"). I hope that makes sense. Thanks again!

Thanks for this video! I already knew the traditional square of oppositions, but this is very useful to practice and refresh it.

Thank you so much this is very helpful

Such an amazing video!🤘🔥

This man is amazing

This is really helpful ❤

thanks

🙏🙏